Vintage ef86s I remember telling everyone how amazing they sound. Later on, Vox also offered additional versions of the AC30 unit. BE is the same, BUT. Tip #1 - For MAZ 38 and MAZ 18 Reverb amps ONLY. The non-HRM amps don’t have this tone stack and as a result the overdrive is bit more open and full sounding. Thanks for the interest in the amps, I really do appreciate it. this instuctable also regroup lots of information I will cover easy to hard mods, how to bias it properly, route wires to reduce, see. The Right Speaker for your Blues Junior. Take 2 Recorded on Strat, Middle Pick Up though Vox AC-15 Medium Volume. Unleash the tone of your Vox AC15C1 with the complete mod kit from Fromel Electronics. I made it so it can go from a somewhat clean transparent slight boost, to a heavy fuzz with a lot of boost, and can be scooped, flat, dark, bright. It's been engineered for a little higher gain than normal and is the lowest cost option in this listing. VOX AC30S1 30 Watt 1x12 Guitar Combo Amplifier AC30S1. The Tone section features, a fully functional global tone stack (Treble, Middle and Bass). These EQ mods could fall under the category of reducing the "drag" of the coupling circuits, since tone controls do connect (couple) one part of a circuit to another. Fifteen watts is plenty for most situations and, when necessary, I can mic it to the PA while. Lots of clean headroom, crunch and overdrive, and a master volume control. Unleash the tone of your Blues JR with these modifications from Fromel Electronics! From the factory, this pint size wonder has a lot of potential, but with some select Fromel tweaks this amp can stand toe-to-toe with some of the finest boutique amps on the market. Swapping the 100k resistor for the 220k makes most of the signal pass through the 250pF treble cap. The nasal attack of the Blues Driver's tone stack was now a brash, Vox-y clarion call. The J-MOD 100 amplifier is a single channel amp featuring a switchable gain stage and effects loop. There is the typical interactive and effective Vox tone stack and plenty of bass & highs for anything I want to do. A couple of mods I thought of were replacing the output pulldown resistor with a pot for volume control or maybe replace the resistor in the tone stack with a pot (and maybe a fixed resistor in series) for a sort of scoop/timbre control. This is one of my best selling mods I sell today. These may have been borrowed/hired, such as for television performances. Tone: 12 Vol Bright: 2. The result is that you get the exact same tonal operation whether set to 30 or 15 watts, something that you'll be thankful for. People who say that a new speaker has cured the Blues Junior’s inherent boxy tone simply haven’t heard a Blues Junior with proper tone stack and power supply mods. As you would expect from an older wah pedal, but it is in perfect working order. Learn to mod your amps and you'll be able to dial in what you want. I'd think it also has more midrange growl (resonance) than the ET65. I have two 2001 Vox AC30/6-TBX amps: Brian May style. I found one that not alot of info was given on, the tone stack mod. Splitting sections of the tone stack either side of a stage prevents interaction between them. And with the convenient Power Control, you’re able to roll back the overall volume while retaining the expressive tone and feel of a cranked-up amp. Torres Tiny Tone. A sequence of evolution at Fender led up to the 1957 Bassman becoming the prototype for most amplifiers' Treble/Bass/Mids control knobs. The mod kit for the Blues Jr. 5K R10 220 2W 1K 5W 1. Unfortunately it is not a complete Class A amplifier, and the confusion stems from the fact that it is using cathode biasing on the output tubes. Model based on the Vox AC30TBX® Top Boost, an amp created in response to demand for "More Treble". The basics are changing the power and output transformers and adding a choke. Install a presence bypass or switch (I just bypassed it, a switch would be better) akavalve: Fender Champion 600 Presence Plus Mod. 4 – they have made the Normal channel fairly useless in tone (way too dark or way too bright) and limited its max gain. While the amp stock has one EL-84 tube, the mod kit adds an additional 6V6 tube that gets blended to increase power. The Thunderdrive Deluxe LTD. It is brighter and harsher sounding and the overdrive is not the same. Passive Bass Pots. Fifteen watts is plenty for most situations and, when necessary, I can mic it to the PA while. There are no controls on the amp, just one input, and one output, meaning that everything is controlled by the guitar volume and tone knobs. New nos '70s stack of dimes inductor vintage tone. My AC15-ish Schematic and Presence Mod for a 5E3 Push-Pull Output Reverb Rockhead single ended SRPP Supro switch Theremin Tone Stack Trainwreck. Vox Ac15 Tone Hacks: YOU MUST KNOW THIS! - Duration: 8:28. 3% kalena_5 has 99. Schematics show the use of 270pf treble capacitor in the tone stack rather than the 250pf usually seen, giving slightly more upper mids. Several versions and reeditions were released over the years. Today, 07:24 PM. I thought the amp sounded good before I did the mod, but after the mod, it was like a totally different amp. Classic Plexi - Bassman style 3-BAND TONE STACK with mid-scoop for extended flexibility in shaping your tone. Vox put a similar control across the output tubes. The P15SMR Pathfinder Mini Stack uses the solid state 15 watt chassis from the Vox Pathfinder Reverb combo amp but now mounted into a head cabinet and coupled to a compact closed back speaker enclosure. Working on amps can. It’s a very simple plan with just three objectives. Because this type of tone stack really loads down the guitar signal being able to eliminate the tone stack is a valuable option. The mod kit for the Blues Jr. Beautiful Brit tone without the glare. Starstream Bass 1H. Description and pack size will be displayed. Vox AC15c1 mods. This mod is different from my H2O mod in that I have built the mod around the Dual Stacked NE5532s. Unleash the tone of your Vox AC15C1 with the complete mod kit from Fromel Electronics. They sell one for the PRII which makes the bias measurable and adjustable from outside the amp. The tone stack has a very wide range and we have found it works great with all types of pickups including active. Placing the treble control after a stage would prevent it interacting with the bass and mid controls. Typically, the ‘Treble Cut’ control is a 500K/1Meg potentiometer, with a. The output of the circuit is then the Tone 2 lug of the pot so you can also omit the Tone 2 wire connection to the board. Starstream Bass 1H. Tube tone and a ton of amp, cab, and effect models. Familiar controls for gain, presence, and the three-band tone stack let you dial in sounds quickly, while essential effects parameters are adjusted with a simple knob twist. So maybe there’s something new here. Tone Stack - Makes a couple key changes that reduce the harshness of the top end and allows the amp to work better with effects pedals. The JBE is a much more dirtier than a BE100, And more tighter. I have a Fender Reverb Twin RI and its just too damn heavy to take everywhere and also way too loud for living room playing. The Vox Pathfinder 10 is an amplifier designed for guitars. Unlike the Fender tone stack you can achieve a mid hump by setting the treble and bass controls low. There's still plenty of adjustment in the tone controls. The amp models also differ in the location of the controllable tone stacks in the signal chain: some models apply the tone stack filtering before the overdrive stages (Princeton, 60s Thrift), others after overdrive (57 Deluxe, Super Sonic), and some between multiple overdrive stages (Vox=British 60s, Deluxe Reverb). 5 Vol Bright: 8. "SKY" and "SSS" are the same tones as "Modern/Classic" from the original clean pedal. Here's a link (there are others if you search under "AC15 bright cap mod:" Vox AC15 Mod Guide | END OF THE GAME The two modifications above made the amp really nice. Could also insert a Vox TB stack for Baby Vox here. The fact that the power amp design is partly simulated, gave Vox the opportunity to make the amp’s models even more realistic!. Tone Control Discussions Fully documented discussions of a variety of Tone controls in various situations. I made it so it can go from a somewhat clean transparent slight boost, to a heavy fuzz with a lot of boost, and can be scooped, flat, dark, bright. Wampler Distortion Plus Mods Gain pot is better use log pot (as original wampler mods) Tone stack is useless, I changed for a100k pot and 22n capacitor and it works very much better (22n to 68n works fine) Thanks! Reply Delete. In 1965, Pete is occasionally seen using Vox AC-30 combo amps, often paired with the Fender Bassman. Who cares what other people say. What basically happens here is that swapping the. First, let's start with one of the quickest tricks that many players do to these and similar amps. Click to open in a new window. Some people might not prefer that for their guitar sound and that is fine. Design: Welded baffle stack with removable nose cap, 1-1/4 in. Then he replaced it with a higher quality, lower value (10pf, I believe) cap. Trinity Tweed Kit. The DRIVE switch now offers a hard drive option in addition to the soft drive. Alternatives. The James (or passive Baxandall) Treble/Bass tone stack allows more control with less quirks than the Fender/Marshall/Vox TMB tone. The Right Speaker for your Blues Junior. It is brighter and harsher sounding and the overdrive is not the same. Please send my appreciation to Dr. If we take comparison out and compare this to Boss DS-1, we have a winner here. my goal in this is a fatter sound as opposed to. The mod gives more flexibility to the tone as you can adjust mid and high frequencies independently. The Mercury Magnetics Epiphone Valve Junior Mod. Several years ago I was asked what my business model was for the amps, and I didn’t have to think long before giving an answer. But you are recognizing this as an old Vox tone stack, so maybe you are correct in having the 1MEG R3 control the low end. Pre-drilled enclosure and all parts are included. The upside is, whereas the cathode follower tone stack driver is great for blues and rock, the parallel triodes mod is optimal for robust, round clean tone. April 25, 2020, 07:24:24 AM Mods Tone stack. 8 KOhm resistor with a 4 KOhm, and use the 10 K pot to go beyond the original 6. Thanks for the interest in the amps, I really do appreciate it. The cleans are warm and juicy with just the right amount of smooth fenderish sparkle on top. com Facebook. True to form, the Top Boost channel delivers the legendary AC30 sound with a fully interactive tone stack. Unlike the Fender tone stack you can achieve a mid hump by setting the treble and bass controls low. A veritable rock institution, Vox has been creating amplifiers fit to grace many of the world's best studios and largest stages for nearly six decades. The above picture is a graph for a modified version of the tone control from early Vox amplifiers. And lastly swapping the. They were made in China or Taiwan for VOX but they sound quite good stock. 3 - Vox went with a 56pf treble cap in the tone stack (C16). Vox AC15 or Vox AC4C1-BL I have some money to spend at Sweetwater and was looking for a smaller/portable amp but loaded with tone to take around with me. The two channel, TC15 is a 15 watt amp with two very different VOX derived channels. Learn to mod your amps and you'll be able to dial in what you want. AC30 Custom Head 30 Watts RMS. *Insert Mini Cat tone control send & return connections where R6 was. This is a nice little amp for the bits of electric stuff I do on a G&L ASAT. – Anonymous Feb 13 '11. 1uF tone cap, and a new 0. Here's what the loop mod looks like on the back of my VT-30:. The Bitmo Dapper Devil voicing mod. It's no sweat to break $2,000 on a decent half stack, but many of the brands making top-of-the-line head and cab pairs also make lower-wattage combos that deliver similar tone below $1,000. This kit addresses a number of issues with this amp by improving the reverb, reducing noise and hum and revoicing the tone stack. Starstream Type 1 Plus. The three knob tone stack has been around since the beginning of bass amplifiers. This parameter defaults to a value for each type but can be overridden if desired. 3: 21/03/2017: Build 47 - Bug fix on VOX schematic, desktop icon fixed, new button to reset controls: 1. Then he replaced it with a higher quality, lower value (10pf, I believe) cap. The RAT Modified Treble, Middle and Bass Controls will sweep from 'Zero-to-Max' on each Frequency. Mod ® Kits are designed to give both novice and experienced musicians the opportunity to build their own amps and effects pedals. The cap values should vary from 250pF/500pF/ 1000pF or. "post" means the tone controls are after the "Gain" distortion. Based on the specifications of the original pedal developed by VOX in the ’60s, the V845 Wah-Wah offers guitarists the same legendary Wah-Wah tone in a new sturdy but very affordable design. Solder a feedback cap to V1's socket across pins 6 and 8 ( plate to cathode ). But this ton stack will give you a 7dB drop in volume without the LPB1 gain section so you'll only want to use it with an effect that has plenty of volume already. Post by sidvicious » Thu Jan 24, 2013 3:40 am i run two amps quite often. Take 2 Recorded on Strat, Middle Pick Up though Vox AC-15 Medium Volume. The Vox Valvetone V810 is a great sounding pedal with true bypass, discontinued in about 2000. Vox Valvetone Mods. Beautiful Brit tone without the glare. One of the weakest points in the AC30 assembly is the lead dress for the output transformer. By the way, this is one of the changes that the famous Keeley Ultra Mod makes to the DS-1. The output of the circuit is then the Tone 2 lug of the pot so you can also omit the Tone 2 wire connection to the board. Torres Tiny Tone. Simply click on the appropriate tab to bring up a different schematic. There is a high-pass cap (C103) connected to the preamp control between the wiper and clockwise terminals (Fig. The American Vox V846 and King Vox Wah sound good but lack the range and richness of tone of the others, probably due to the inductor and caps. Typically, the ‘Treble Cut’ control is a 500K/1Meg potentiometer, with a. Just add an SPST ON/OFF mini-switch to the Mid pot's (or 6. INCREASING GAIN THROUGH ADDING NEW GAIN STAGES: This being the 1990's, I think by now most guitarists know that adding a gain stage to an amp increases its ability to generate. The Valvetronix series is the perfect example of VOX's unique, cutting edge vacuum tube modeling know-how; delivering a broad range of powerful sounds. "END" places the tonestack after the power amp simulation. I switched out the stock speaker for a Celestion Blue, added a Tone knob (which I think the new version has stock) and did some sort of bright mod? I've also read about a ac30 tone stack mod. For example, the ’68 Deluxe Reverb features a “modified Bassman tone stack” in one channel, which is supposed to be better suited to effects pedals. I took my AC15CC1 to my audiophile friend for the often-discussed cap mod. For sale is my Vox V847 wah with a true bypass mod. The Valvetronix series is the perfect example of VOX’s unique, cutting edge vacuum tube modeling know-how; delivering a broad range of powerful sounds. 8k Middle tone resistor's) ground. The hot switch lifts most of the tone stack out of the circuit so that the signal is not loaded down and thus overdrives the phase inverter. The kits comes. 4 - they have made the Normal channel fairly useless in tone (way too dark or way too bright) and limited its max gain. The wah has some cosmetic scratches. This kit is NOT for the AC15CC1. *Insert Mini Cat tone control send & return connections where R6 was. Its strength lies in the sweetness and early breakup caused by the smaller transformers than the Super Reverb, Vibroverb and Pro Reverb. The inside story of how the beauty company and its controversial founder changed an industry forever. Passive Bass Pots. The Bassman-style tone stack serves two purposes: to compensate for the treble and bass attenuation that inevitably occurs at each stage of amplification and to allow the guitar player to adjust the frequency response using bass control R B, middle-range control R M, and treble control R T. 1 tone stack caps tightens up the bottom end a bit and brings the mids forward. Mod 2 - AC30 tonestack mod: (Original vintage tonestack setup for AC15/30) This one is a little tricky, since there are no spaces on the board to solder a jumper wire off the bass tone pot. The two channel, TC15 is a 15 watt amp with two very different VOX derived channels. i had heard a lot of the ef86 hype, yet never heard an ef86 myself. Here's a link (there are others if you search under "AC15 bright cap mod:" Vox AC15 Mod Guide | END OF THE GAME The two modifications above made the amp really nice. It's been engineered for a little higher gain than normal and is the lowest cost option in this listing. Q-5: There are so many speaker options. He explains that the Bassman he has, as well as what's used in the Fender Bassman reissue, uses a 100k slope resistor and a. Mini SuperBeetle Audio 50 Watts 1 x 6. The Bright cap mod on these has been to control the splatty note decay on higher gain settings. I like that the new Custom series comes pre- modified with a British speaker & a Bassman tone stack in the "Custom channel". Based on several years of vintage Ampeg B15 designs, the Trip Top combines the original circuits of both the Ampeg B-15NC (1964) as well as the later B-15NF (1965-67). It can get very loud. The nasal attack of the Blues Driver's tone stack was now a brash, Vox-y clarion call. The Fender has been re-issuing the 5F8A 4X 10 Tweed Bassman for quite some time now and it's one of Fender better amps but it does not sound that much like a original Bassman. Tone Stack - Makes a couple key changes that reduce the harshness of the top end and allows the amp to work better with effects pedals. Don't settle for a stock amp, when you can let out the Vox mojo with a few key mods from Fromel Electronics! WARNING: Performing these modifications WILL void the warranty on your amplifier. Here's a link (there are others if you search under "AC15 bright cap mod:" Vox AC15 Mod Guide | END OF THE GAME The two modifications above made the amp really nice. All kits come with easy to follow instructions and use point to point wiring. Mod 2 - AC30 tonestack mod: (Original vintage tonestack setup for AC15/30) This one is a little tricky, since there are no spaces on the board to solder a jumper wire off the bass tone pot. 5" Speaker & 1 x 1" Tweeter. boost switch Bridged-T Cathodyne Phase Inverter Crate EL34 Tube EL84 Tube Fender Gibson High Gain JCM800 Line 6 low watt Marshall Mods Park Plexi Push-Pull Output Reverb Rockhead single ended SRPP Supro switch Theremin Tone Stack Trainwreck Transistor to Tube Conversion Tube Reverb Vox. Best thing to do is learn what you like and how to get it then you'll not have any issues with tone. General discussion about music electronics. As you would expect from an older wah pedal, but it is in perfect working order. For sale is my Vox V847 wah with a true bypass mod. 4 – they have made the Normal channel fairly useless in tone (way too dark or way too bright) and limited its max gain. Lots of clean headroom, crunch and overdrive, and a master volume control. Mini SuperBeetle Audio 50 Watts 1 x 6. DS-1 tone stack is based on the Big Muff tone stack. Vox Valvetone Mods. 5kHz, so it should work very well. And lastly swapping the. To make this model feel more like a full amp, the power amp from the Fatality model (mesa rectifier mod) was added then tweaked slightly to reinforce the overall EQ curve of the Big Bottom. Hi all, I have been lurking on this forum. Mods For Rockers. 4 – they have made the Normal channel fairly useless in tone (way too dark or way too bright) and limited its max gain. IF you look at the Duncan Tone Stack Calculator and use the "Vox" program to approximate the values closer to this tone stack, you will see that a. not flabby or boomy, tight as hell. with Johnny about some mods to the tone stack. What follows is a retrospective journey of me and my Vox AC15 amp. After the mod, the amp boasts clean, sparkling top en. Playing off a "skyscraper" high rise theme, 1969 Vox literature introducing the Power Stak series indicated that "you have to pay extra for the ladder. joe gagan wah 355 followers kalena_5 ( 2331 kalena_5's feedback score is 2331 ) 99. II sounds wonderful, versatility enhanced. Fender Pro 6G5 or 6G7 tone stack. But this ton stack will give you a 7dB drop in volume without the LPB1 gain section so you'll only want to use it with an effect that has plenty of volume already. The amp’s tone stack features a beautiful, spread out tone that is at once huge and clear. Tip #1 - For MAZ 38 and MAZ 18 Reverb amps ONLY. Re: My Fender Hot Rod Deluxe mods! If you look up in post #9, I posted a pic of my Hot Rod with my mods. Unnervingly, if you see it enough it even begins to make sense. The Trinity TC15 faithfully reproduces both Matchless and VOX amp tones. Also, the "65 Twin is very heavy at 70 lbs. What follows is a retrospective journey of me and my Vox AC15 amp. It's a mod that was made to Dino Cazares in the 90s for his Marshall JCM800. You guys know how it is once you start tinkering with something, there will always be something you will want to do. Carr Mercury V 1x12 Combo Amp in Black tolex This is my third Carr amp. Marshall’s generally do not feature great lush sounding MOD spring reverb. The two channel, TC15 is a 15 watt amp with two very different VOX derived channels. People began to refer to these amplifiers as AC30TBs. One is sweet and one is tough. Brian uses the Normal channel exclusively but I also like the '60's jangle of the Brilliant channel. What Vox is doing here with the "Bright/Thick" switch is going between the tone stack (which is indeed bright!) and a tonestack bypass. Being a tinkerer, I then put in some better tubes and a Celestion Blue speaker. *Insert Mini Cat tone control send & return connections where R6 was. I owned a '65 Twin Reverb Reissue, but found it to be too loud at anything above "3" for recording work. , which only costs $22 is the cheapest and best upgrade I've ever done to any piece of gear I've ever had. Here's an in-depth analysis of it. A pretty vanilla MKIII Tonebender style pedal - with the customary 3 dials and little else. 5 Vol Normal: 12 Fat Strat/Tele clean less saturation:. Aside from swapping in an AlNiCo Blue speaker, the only mod that I know of done on a regular basis has been the bright cap mod. The tone stack in the A/DA Pedal Preamp has the exact response as a Fender 1960s tone stack, and guitarists who are used to the Fender taper will be immediately familiar with. The fact that the power amp design is partly simulated, gave Vox the opportunity to make the amp’s models even more realistic!. The cleans are warm and juicy with just the right amount of smooth fenderish sparkle on top. Lots of delay in the FX loop, and pedal gain into the front of the amp (fuzz, overdrive, and a Marshall style distortion). I used an old surround sound speaker as my enclosure, and used the speaker. For this graph, the Tone control is still to max treble but the Body control has been rotated to its mid point. Classic style 3-BAND TONE STACK for extended flexibility in shaping your tone. Best thing to do is learn what you like and how to get it then you'll not have any issues with tone. 4 - they have made the Normal channel fairly useless in tone (way too dark or way too bright) and limited its max gain. I have a Mercury Magnetics choke on order, not sure if changing the OT will make. Z for offering this mod service. Tip #1 - For MAZ 38 and MAZ 18 Reverb amps ONLY. In fact, it is often referred to as the FMV (Fender Marshall Vox) tone stack circuit. I have a Fender Reverb Twin RI and its just too damn heavy to take everywhere and also way too loud for living room playing. It was introduced in 2002. Tone Stack - Makes a couple key changes that reduce the harshness of the top end and allows the amp to work better with effects pedals. Fender Pro 6G5 or 6G7 tone stack layout. Pedal does have a MOD to allow external power source, that was done before I got it. Each setting reconfigures the tone stack and gain. Several years ago I was asked what my business model was for the amps, and I didn’t have to think long before giving an answer. When the potmeter is set at 0 you'll have an original tone, and when turned up the mids increases and your amp growls with a British Vox'ish tone (especially together with a Celestion speaker). Or try the AC30TB tone stack (Bright on) Wikipedia; Vox forum; TOP BOOST = VOX AC30TBX TOPBOOST. Building on the legacy of the iconic AC30, the all new AC30S1 from VOX takes that classic sound and style and presents it in a stripped back and straight forward design with a single 1x12 speaker design. Aftermarket speakers, like tubes, are not really a mod. You will be presented with a list of items after entering 3 digits, select one of them. 047 cap as mid cap in the tone stack. These EQ mods could fall under the category of reducing the "drag" of the coupling circuits, since tone controls do connect (couple) one part of a circuit to another. The Vox AC15 HW1 amp preserves the traditional Vox two-channel design, providing a Top Boost channel and a Normal channel. The cap values should vary from 250pF/500pF/ 1000pF or. Rectifier - Sovtek. The ToneLab ST maintains the. The standard configuration uses 6L6 power tubes, the standard "Twin" transformers, plate loading and bias points, and the custom SebagoSound tone stack. Install a presence bypass or switch (I just bypassed it, a switch would be better) akavalve: Fender Champion 600 Presence Plus Mod. These les paul gibson are really awesome. The sound difference is night and day. The Epi mod low-end response in fact exceeds that of my Univalve and Vox amps, and although each amp's tone is a different, the Epi holds its own. I have an AC15C1 where I have done the bright cap mods, and tone stack changes, retubed with JJ's and installed a UK Celestion Blue. Around the same time, Vox also introduced Treble and Bass versions of the AC30 without the Top Boost unit. Multi-platform Java version. This all-valve tone machine is an elegant single channel amp designed to unleash every last bit of tone in any situation. Mini SuperBeetle Audio 50 Watts 1 x 6. This kit is NOT for the AC15CC1. Marshall and Vox used a similar system. Well done Dr. All the ear-piercing highs are removed and replaced with silky smooth tones. Best thing to do is learn what you like and how to get it then you'll not have any issues with tone. With 30 watts, it’s loud enough to use on my gigs. akavalve: Fender Champion 600 cathode bypass mod b. Another common mod is changing the Tone Stack's treble tone cap. This mod is different from my H2O mod in that I have built the mod around the Dual Stacked NE5532s. 3: 07/09/2006. The tone stack has an extended range. A higher value will extend the treble controls reach into the mid frequencies and change the depth of the scoop. Now when the amp turned up enough to move some air it sounds a. The fact that the power amp design is partly simulated, gave Vox the opportunity to make the amp’s models even more realistic!. I read alot about different mods for it. I made it so it can go from a somewhat clean transparent slight boost, to a heavy fuzz with a lot of boost, and can be scooped, flat, dark, bright. Choose the circuit and move the tone controls to see the frequency response graph change. True to form, the Top Boost channel delivers the legendary AC30 sound with a fully interactive tone stack. VOX AC30S1 30 Watt 1x12 Guitar Combo Amplifier AC30S1. Each one has. Model based on the Vox AC30TBX® Top Boost, an amp created in response to demand for "More Treble". Useful treble control. Again it is cheaper to produce a power transformer for solid-state rectification and not have. There are no controls on the amp, just one input, and one output, meaning that everything is controlled by the guitar volume and tone knobs. Start at 3:15 if you want to skip all the set up and get right to the demo. The touch sensitivity is off-the-charts compared to the 65 DRRI. Introduced by Fender in 1957 in the 5F6 Bassman, it was later copied by Marshall, Vox, and many other guitar amplifier manufacturers [2]. Soundwise, I'd already had the chance in the shop to A/B it against the AC15 with the Blue and knew that I would not miss the Tone Cut piece of the circuit. What Vox is doing here with the "Bright/Thick" switch is going between the tone stack (which is indeed bright!) and a tonestack bypass. all i did was lift the legs on the r7 and r19 resistors. The pre-amp doesn't necessarily have to be a 12AX7 ($ in NOS), but a 5751 (approx 70% of the gain of a 12AX7) or a 12AY7 (45% of the gain) work well at reducing the gain, giving slightly better. For sale is my Vox V847 wah with a true bypass mod. There's still plenty of adjustment in the tone controls. The unit also has 5 tone settings to allow you t. Modkitsdiy Guitar Amp Mod Kit Tone Stack. Each setting reconfigures the tone stack and gain. Contact Me. Re: VOX Lil night Train tube change mod Post by TheIman » Fri Apr 13, 2012 8:31 pm I am newbie here and a novice tube swapper but I was wondering where 12av7 sits on the gain scale I have a huge box of old philco tubes that i mess with and i did the 12bh7 swap and was really pleased with the tone. Provide a good product at a fair price, treat the customer well and with honesty. 410HJS heavily modded. We listened. Here's some: a couple of treble-eaters taken away, 3-way switchable Crunch TS, switchable 2/3-gainstage Crunch Green, Crunch Red/Orange and OD circuit very modded, R192 CF resistor 47k changed to classic Marshall 100k, OD1 and OD2 tone stack inputs separated using 5V relay, 4-8-16 Ohm NFB tap switch, 27-47-100k NFB resistor switch, 47nF-100nF-168nF Presence cap switch. The link below will download a Tone Stack Calulator. 1 makes the sound a little fuller. The Big Muff Pi is a distortion/sustain guitar pedal designed by Bob Myer and Mike Matthews in 1969 and mass produced in 1970. As far as I can tell, the Vox Tone Control is a variation of the FMV tone stack used by Fender, Marshall, Mesa Boogie and countless others. The Official Blackstar Amplification site, featuring Guitar Amplifiers, Guitar Amps, Effects Pedals, Merchandise, Dealers, Videos, Artist News. INCREASING GAIN THROUGH ADDING NEW GAIN STAGES: This being the 1990's, I think by now most guitarists know that adding a gain stage to an amp increases its ability to generate. The Master section features a Master Volume, a "Dark" mode switch and a Reverb Level control. The three knob tone stack has been around since the beginning of bass amplifiers. I had been recommended bypassing the entire circuit with a 0. VOX™ Silencer options: Vox S™ w/ 5/8-24 Direct Thread Adapter– (SKU: EA04) Vox K™ w/ 5/8-24 Direct Thread Adapter– (SKU: EA06). Big, and full. akavalve: Fender Champion 600 cathode bypass mod b. The upside is, whereas the cathode follower tone stack driver is great for blues and rock, the parallel triodes mod is optimal for robust, round clean tone. There are some additional filtering and component changes. Also, the "65 Twin is very heavy at 70 lbs. This is one of my best selling mods I sell today. For the mid boost thing, I changed several components of the tone stack. Presence control - used to adjust the high-frequency response and damping factor of the power amp section. Aside from swapping in an AlNiCo Blue speaker, the only mod that I know of done on a regular basis has been the bright cap mod. There are other anomalies on mine compared with the factory circuit diagram, such as a 10nF snubber from grid to earth on the first stage, a 500pF coupling cap off the first stage's anode, 500pF bright cap on the volume control and a 150pF treble cap in the tone stack. This circuit has no middle control. You get twice the plate area, twice the current capability, half the noise, deeper frequency response, a sound that’s milder, more like the sound of a 12AY7, but all the gain of a 12AX7. Remember a passive tone stack CANNOT add to the signal, can only "take away" parts of the signal (when bass is at max, treble is being cut - when treble at max, bass is being cut). It is a simplification because the response curve of the pedal depends on the rest of the circuit as well, but I can tell you that the result is quite acceptable. We listened. The Tone Cap is an incredibly useful tone-shaping tool. The cabinet was in excellent, original condition and displayed all the classic marks of vintage British Vox construction, but there was no “Jennings Musical. I have two 2001 Vox AC30/6-TBX amps: Brian May style. i had heard a lot of the ef86 hype, yet never heard an ef86 myself. The slightly anemic character of the Flat mode became the lean, compressed attack of a JCM800 but with a more powerful push that was HiWatt-y in its authority. The Tiny Tone is a single-ended class a amp using a special low voltage output pentode to achieve the real valve tone but at low power. Discussion in 'Amps' started by XIIIluckystars, Jan 31, 2014. The tone stack in the A/DA Pedal Preamp has the exact response as a Fender 1960s tone stack, and guitarists who are used to the Fender taper will be immediately familiar with. Fifteen watts is plenty for most situations and, when necessary, I can mic it to the PA while. Could also insert a Vox TB stack for Baby Vox here. Common values are 220pF, 330pF and 470 pF. Here's what the loop mod looks like on the back of my VT-30:. Description and pack size will be displayed. I ran it thru my 4x12 (celestion golds) and the AC15 sounded great. Tube tone and a ton of amp, cab, and effect models. The Vox AC15C1 Custom guitar combo amp offers maximum tonal dexterity to countless guitar players around the world. Tone Stack - Makes a couple key changes that reduce the harshness of the top end and allows the amp to work better with effects pedals. So to do this mod, you would remove the wire from the mid pot's ground connection and connect it to a switch, then connect the other side of the switch back to the ground point. But you are recognizing this as an old Vox tone stack, so maybe you are correct in having the 1MEG R3 control the low end. Alternatives. Here's an in-depth analysis of it. Unleash the tone of your Vox AC15C1 with the complete mod kit from Fromel Electronics. TONE LOCATION - This control allows you to alter the location of the tone stack. IMO, this is a very gnarly fuzztone for bass that sounds great. Rumor is ch2 is based on a train wreck tone - it get dirty quickly, but not in a 'vox' way. When we checked one out, we found they were using some excellent quality components, and the circuit was nearly a tube screamer as people expected. There also was not a great deal of range in the. First, let's start with one of the quickest tricks that many players do to these and similar amps. Its strength lies in the sweetness and early breakup caused by the smaller transformers than the Super Reverb, Vibroverb and Pro Reverb. By the way, the increase in bass for the Night Train sounds unbelievable. When the tonestack is bypassed, the signal goes through C28 which in conjunction with the volume pot (we're ignoring the slight impact of R35 because we're jumpering it - read on for that) creates a highpass. Then we left the normal fender channel stock. It's no sweat to break $2,000 on a decent half stack, but many of the brands making top-of-the-line head and cab pairs also make lower-wattage combos that deliver similar tone below $1,000. 3: 02/04/2016: Build 44 - Units of measure such as Henries, Ohms added to the schematics. Or try the AC30TB tone stack (Bright on) Wikipedia; Vox forum; TOP BOOST = VOX AC30TBX TOPBOOST. Example, turning up treble and mids on many amps will slightly increase volume. Start at 3:15 if you want to skip all the set up and get right to the demo. And of course there are endless combos for the caps in the tone stack. Solder a feedback cap to V1's socket across pins 6 and 8 ( plate to cathode ). Original Fender reverb sound by. Take 2 Recorded on Strat, Middle Pick Up though Vox AC-15 Medium Volume. The clean channel stayed clean, the ultra drive channel became a real drive channel. 5" Speaker & 1 x 1" Tweeter. 3: 06/01/2015: Recompiled, minor tidy up activities. I did some mods to my Vox, but I think I have the AC15cc1. Pedal does have a MOD to allow external power source, that was done before I got it. Two CTS 500K audio taper pots stacked in one hole on the guitar. The Valvetronix series is the perfect example of VOX's unique, cutting edge vacuum tube modeling know-how; delivering a broad range of powerful sounds. The JB-2 Angry Driver is a step in a new direction for BOSS. 3 N° 12 of the ToneQuest Report, issue of October 2002 (in english). Another tone control we almost all come in contact with is the amplifier tone stack, as sketched out in Figure 3. Pete’s Gear: Tone Bender fuzz box. Fender Pro 6G5 or 6G7 tone stack layout. It works particularly well with simple low wattage amps, with or without a Tone control or full Tone Stack (Fender Champ, etc. (Most of what I play is acoustic, for which I use a Crate Gunnerson). "PRE" places the tone stack at the input to the amp, "POST" places the stack between the preamp and power amp. Marshall Afd Mod. The ToneLab ST maintains the. TONE LOCATION - This control allows you to alter the location of the tone stack. A pretty vanilla MKIII Tonebender style pedal - with the customary 3 dials and little else. - R3 lets more current through the tone stack and will increase bass while changing C24 should decrease the high-end a bit. New nos '70s stack of dimes inductor vintage tone. With 30 watts, it's loud enough to use on my gigs. Thirdly, the color PDFs from MOD Kits’ site are easier to follow than the black and white print outs provided, and a schematic of the circuit (not included in my kit), can be freely downloaded from MOD kits’ site. Insertion loss is lower than the standard Fender tone stack, but obviously higher than 1 knob controls. com does have a calc for their corner frequencies. VOX Tone Room is a simple and intuitive way to get the most out of your VOX amps. The EH Crying Tone Pedal is really interesting. Mini SuperBeetle Audio 50 Watts 1 x 6. New nos '70s stack of dimes inductor vintage tone. > chance to verify, the later Dumbles had a different tone stack that resulted in > a much tighter bottom when the bass setting was increased. Which brings us to the brand new Vox AV30 - a 30 Watt combo and part of the new AV series that offers 15, 30 and 60 Watt models. True to form, the Top Boost channel delivers the legendary AC30 sound with a fully interactive tone stack. 3uF cap in parallel with C52 through a DPDT switch. This way the overall resistance between the tone stack and and ground remains close enough. The VOX tradition of innovation carries on today with products designed to achieve unprecedented tonal flexibility. Lots of delay in the FX loop, and pedal gain into the front of the amp (fuzz, overdrive, and a Marshall style distortion). On the basis that "the more knobs, the better", I started the design using the FVM tone stack. The tone stack in the A/DA Pedal Preamp has the exact response as a Fender 1960s tone stack, and guitarists who are used to the Fender taper will be immediately familiar with. Just add an SPST ON/OFF mini-switch to the Mid pot's (or 6. Each setting reconfigures the tone stack and gain. Below is a graph comparing the response curve of the stock Carvin amp to the response curve of a Vox and Fender amp with typical values and the response curve of the modified V16 stack. New nos '70s stack of dimes inductor vintage tone. INCREASING GAIN THROUGH ADDING NEW GAIN STAGES: This being the 1990's, I think by now most guitarists know that adding a gain stage to an amp increases its ability to generate. Building on the legacy of the iconic AC30, the all new AC30S1 from VOX takes that classic sound and style and presents it in a stripped back and straight forward design with a single 1x12 speaker design. For sale is my Vox V847 wah with a true bypass mod. Based on the specifications of the original pedal developed by VOX in the ’60s, the V845 Wah-Wah offers guitarists the same legendary Wah-Wah tone in a new sturdy but very affordable design. It wort hes its price. There are no controls on the amp, just one input, and one output, meaning that everything is controlled by the guitar volume and tone knobs. Click to open in a new window. I had it narrowed down to the VOX AC30C2 and this Marshall DSL 40C. It's really a tone cut like on a Vox AC30 located in the power amp, filters high end in the signal. 410HJS heavily modded. This interconnectivity is key; operating one control may influence the behavior of the others. The guy has a couple 5F6A Bassmans and he spends a good deal of time talking about the tone stack and how it is different than the tone stack in the schematic. A couple weeks ago I got a Vox ac15c1. Amp Mod Kit - MOD® Kits, Tone Stack Mod This kit converts the TMB tone stack of a blackface or silverface amp to a modern aggressive voiced tone stack. My Crybaby was the only one he modified. The sound difference is night and day. ), which allow the user to compare different tonal responses of famous amps, and understand how they all differ. Merely changing the Body control has altered the entire character of the Tone control response. It works particularly well with simple low wattage amps, with or without a Tone control or full Tone Stack (Fender Champ, etc. So far, my experience is that I can still get that bright vox chime, but I can also get a much broader set of tones using the tone stack than I was able to before. After the mod, the amp boasts clean, sparkling top en. when vox released thier 'heritage series' of amps with ef86 and top boost channels, i wanted to build one. Tip #1 - For MAZ 38 and MAZ 18 Reverb amps ONLY. It’s a very simple plan with just three objectives. Best thing to do is learn what you like and how to get it then you'll not have any issues with tone. 1 makes the sound a little fuller. New nos '70s stack of dimes inductor vintage tone. Lots of delay in the FX loop, and pedal gain into the front of the amp (fuzz, overdrive, and a Marshall style distortion). Marshall Afd Mod. Brian uses the Normal channel exclusively but I also like the '60's jangle of the Brilliant channel. Mod Your Fender Pro-Jr!: Hi, in this instructable i will show you ways to mod your pro-jr to change the sound in pretty much every ways. The V847 is a Wah-Wah pedal designed by Lester Kushner and Brad Plunkett and released in 1967 by VOX. The capacitor value is wide open for experimentation. Vox AC30/6 amplifiers from around 1963 had already implemented the top boost, and therefore had three tone controls. The modification is achieved by replacing capacitor and resistor values in the original tone stack. With the top boost and normal channels being able to be mixed this allows very high and musical distortion or can be blended back to sweet cleans with the unique Vox voicing. Well done Dr. 047) cap has less low mids. The Saturator is an overdrive pedal kit that can cover a wide range of gain effects, transitioning smoothly from a massive clean boost to a warm and saturated distortion with the turn of a knob. I'm a big fan of reverb and always use a little. 047 cap for the 0. pdf), Text File (. I have considered (and may still do) BillM’s tone stack mod and upgrade the (Mexican) capacitors. Vox AC15 or Vox AC4C1-BL I have some money to spend at Sweetwater and was looking for a smaller/portable amp but loaded with tone to take around with me. Unleash the tone of your Vox AC15C1 with the complete mod kit from Fromel Electronics. It is brighter and harsher sounding and the overdrive is not the same. It's been engineered for a little higher gain than normal and is the lowest cost option in this listing. Best thing to do is learn what you like and how to get it then you'll not have any issues with tone. The inside story of how the beauty company and its controversial founder changed an industry forever. Read the "Help" info. Vox amps share a lot with Fender but have a reputation for even more shiny clean tones with very treble-intensive sounds. The Skyliner tone stack is very balanced for both the clean and overdrive channels. A pretty vanilla MKIII Tonebender style pedal - with the customary 3 dials and little else. If a tone stack is followed. Don't settle for a stock amp, when you can let out the Vox mojo with a few key mods from Fromel Electronics!. I mostly use single coils on it and run the mids higher and the treble a little lower on these amps for fat classic rock tones that work well for rhythm and leads. 3: 21/03/2017: Build 47 - Bug fix on VOX schematic, desktop icon fixed, new button to reset controls: 1. Tone stack tweak C16 = C23 (stock 56pf) -> 47pf Removal of Top Boost Cathode Bypass cap This is the U2 mod - the Edge's amp doesn't have this cap and it makes for tighter bass, more headroom/lower gain on the TB channel. Sean Coyle-Smith from Shame uses the Rocker 32 Natural Channel as a clean base upon which he builds. Here's some: a couple of treble-eaters taken away, 3-way switchable Crunch TS, switchable 2/3-gainstage Crunch Green, Crunch Red/Orange and OD circuit very modded, R192 CF resistor 47k changed to classic Marshall 100k, OD1 and OD2 tone stack inputs separated using 5V relay, 4-8-16 Ohm NFB tap switch, 27-47-100k NFB resistor switch, 47nF-100nF-168nF Presence cap switch. The JB-2 Angry Driver is a step in a new direction for BOSS. “PRE” places the tone stack at the input to the amp, “POST” places the stack between the preamp and power amp. 1993 Match D-30 - Based on* a Matchless DC-30, the amp that really put Matchless on the map. It incorporates many ideas that came from people using older versions of the application. The Hartke Tone Stack controls are also labelled Bass and Treble, but the enhanced. The wah has some cosmetic scratches. The DRIVE switch now offers a hard drive option in addition to the soft drive. Cambridge50 50 Watts. Now when the amp turned up enough to move some air it sounds a. Re: Traynor YGM Tone Stack « Reply #10 on: November 19, 2015, 01:49:14 AM » That video was made with the volume at about 5 with an attenuator on very low (or high). BE is the same, BUT. New Tone Stack Options: "Mid Shift" and "Deep" 2. The slightly anemic character of the Flat mode became the lean, compressed attack of a JCM800 but with a more powerful push that was HiWatt-y in its authority. I do know it's cathode biased, so the tubes are just a swap out deal, no adjustment needed. Don't settle for a stock amp, when you can let out the Vox mojo with a few key mods from Fromel Electronics! WARNING: Performing these modifications WILL void the warranty on your amplifier. 410HJS heavily modded. The kits comes. They sell one for the PRII which makes the bias measurable and adjustable from outside the amp. View Blog Entries. These have 2 channels, 1 is a clean/bright channel, 2 removes the tone stack and adds a gain stage from another tube = crunchy, dirty. I improvised something that works well. The James (or passive Baxandall) Treble/Bass tone stack allows more control with less quirks than the Fender/Marshall/Vox TMB tone. Im go blackheart a wango on ya cuz I likes mine a lot. Useful treble control. The Fender has been re-issuing the 5F8A 4X 10 Tweed Bassman for quite some time now and it's one of Fender better amps but it does not sound that much like a original Bassman. Provide a good product at a fair price, treat the customer well and with honesty. 3 - Vox went with a 56pf treble cap in the tone stack (C16). 3% Positive Feedback THE place with the best custom wahs, wah kits & awesome wah parts. Fender/Marshall/Vox Tone Stack So I've been looking into building a mini LM386 based amp, but I wanted more than just gain and volume control. The picture shows the two removed condensers and some components that have been added. They both sounded better than the new Vox V847. This circuit has no middle control. It's really a tone cut like on a Vox AC30 located in the power amp, filters high end in the signal. There are no controls on the amp, just one input, and one output, meaning that everything is controlled by the guitar volume and tone knobs. I like the fact that you can connect 8 and 16 ohm speaker cabs to it, the VOX does that also but at 30 watts. It IS the Rockerverb preamp with full tone stack. The change from the stock 4'x8' speakers to an old Celestion 12', that coupled with the capacitor mods are dramatic. There is the typical interactive and effective Vox tone stack and plenty of bass & highs for anything I want to do. 5-3 Fat n thick clean: Input: Bright 1 Jumper: Normal 1 to Bright 2 Tone: 9 Vol Bright: 3. Pete’s first use of Vox amps came in 1963, when he joined the Detours, sharing Roger’s Vox AC-15, which he had acquired from Detours rhythm guitarist Roy East, who had drowned whilst on holiday. The FENDER '68 Custom Deluxe Reverb is a very good guitar amplifier. Vox has also added a new and unique Hot/Cool switch. 1 tone stack caps tightens up the bottom end a bit and brings the mids forward. Vox AC30/6 amplifiers from around 1963 had already implemented the top boost, and therefore had three tone controls. - R3 lets more current through the tone stack and will increase bass while changing C24 should decrease the high-end a bit. Install a presence bypass or switch (I just bypassed it, a switch would be better) akavalve: Fender Champion 600 Presence Plus Mod. Fender’s ‘65 Princeton Reverb reissue is the obvious choice if you just want classic Fender clean, but a real silverface Princeton Reverb, and many of its boutique clones and even kits, will set you back more than the cost of this ‘68 Custom. Any member can respond, ask pertinent questions, or start new threads. Boss Katana-Artist 100W 1x12 Guitar Combo Amplifier Katana amps have received worldwide acclaim for their authentic tube tone and feel, onboard BOSS effects, and exceptional value. Unfortunately it is not a complete Class A amplifier, and the confusion stems from the fact that it is using cathode biasing on the output tubes. Building on the legacy of the iconic AC30, the all new AC30S1 from VOX takes that classic sound and style and presents it in a stripped back and straight forward design with a single 1x12 speaker design. First, let's start with one of the quickest tricks that many players do to these and similar amps. in the tone stack with 100pf Silver Mica caps helps to scoop the mids a little and makes the amp sound more like a vintage amp. Please send my appreciation to Dr. This kit addresses a number of issues with this amp by improving the reverb, reducing noise and hum and revoicing the tone stack. Vintage Guitar Fuzz Pedal* Vox ToneBender* Excellent Working Condition! Up for auction is a nice mid 60's VOX Tone-Bender fuzz tone pedal. When designing the DDS-2250V, I had the choice of the traditional Fender/Vox/Marshall tone stack using Bass/Mid/Treble controls, or using a passive version of the Baxandall Bass/Treble tone stack which is popular on hi-fi equipment. 1960 Two-Tone - Based on* the Gretsch® 6156, a 1960 1x10 amp made by Valco/Supro. Most of the mods I performed were inspired by the guide found here, so you should definitely check it out if you're considering doing some mods of your own. Changing this to the “vintage” 47pf value very slightly reduces the treble. Yeah, the pot just takes the place of a preset resistor in the amp;however if the amp has a baxandall eq, you get more tonal versatility than a fender,vox, or marshall tone stack is capable of The early feander's had baxandall eqs in some of them, and as a result could get a true mid boost. Today, 07:24 PM. The Vox design is intended to be limited by the signal limiter in the preamp, never by the actual saturation of the amp itself. Mod Garage: The Fender Greasebucket Tone Circuit Many pro players swear by this tone circuit, and it indeed produces a different effect than the standard tone circuit we all know. Like Fender, it never did manage to crack the giant stack market when it appeared in the 1960s and has always excelled instead at smaller, tasty, combos. Replaced all of the tubes with 12AX7’s. This is one of my best selling mods I sell today. Amp Books® Vf Vpp +12. True to form, the Top Boost channel delivers the legendary AC30 sound with a fully interactive tone stack. Splitting sections of the tone stack either side of a stage prevents interaction between them. Great Vox tone but much better if you do the recommended modifications. One is sweet and one is tough. I had an amp tech go through and replace all of the tone caps to match that of the Fender Super Reverb specs. Hi all, I have been lurking on this forum. Well done Dr. 5" Speaker & 1 x 1" Tweeter. The Smokey Amp will also drive any 4, 8 or 16ohm speaker cabinet, including 4x12s, and can even be used on the input of another amp as a fuzz box or booster. View this forum's RSS feed. Working on amps can be deadly if you do not take proper precautions. Notification Light / LED S20, S10 - aodNotify Mod APK. For sale is my Vox V847 wah with a true bypass mod. The pre-amp doesn't necessarily have to be a 12AX7 ($ in NOS), but a 5751 (approx 70% of the gain of a 12AX7) or a 12AY7 (45% of the gain) work well at reducing the gain, giving slightly better. I found an article on taming the treble of brilliant channel of the big TV amps by reducing the value of the capacitor in the RC circuit off the second transistor's emitter to make it more like the normal channel. I find myself plugging into the Custom channel 95% of the time. that a new speaker has cured the Blues Junior's inherent boxy tone simply haven't heard a Blues Junior with proper tone stack and power supply mods. Read the "Help" info. I took my AC15CC1 to my audiophile friend for the often-discussed cap mod. When SPICE modelling the effects of the stack, it became apparent. While this amp has a great tone stock from the factory, a few key cha. Fender’s ‘65 Princeton Reverb reissue is the obvious choice if you just want classic Fender clean, but a real silverface Princeton Reverb, and many of its boutique clones and even kits, will set you back more than the cost of this ‘68 Custom. Like Fender, it never did manage to crack the giant stack market when it appeared in the 1960s and has always excelled instead at smaller, tasty, combos. The two-band EQ is also voiced just right to be quite versatile and powerful, yet still feel like a proper vintage tone stack. While the coefficients given here are for the 1959 Fender Bassman tone stack, most tone stacks (Fender, Marshall, Vox) are the same circuit with different component values for the capacitors and resistors, or different relationship between the controls and the resistances. The new names more accurately represent the actual D topologies and avoid confusion of what "70's-80's tones" mean. Vox Ac15 Tone Hacks: YOU MUST KNOW THIS! - Duration: 8:28. Here are some common tone stack circuits, courtesy of monster. I have the Li'l Night Train NT2H, which has a similar tone stack circuit, but uses one 12AU7 as the power tube as opposed to two EL84 in the NT15H.
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