- Hellatone 30 with ???? 212 cab with Bogner Ecstasy head
- Vibro Champ Mods
- What's the op amp do on the Circuit board on my amp?
- Harsh at louder volumes???
- Cool vintage parts ebay score!
- SOZO Vintage Caps, Hype Time!
- Peavey Classic-30 woes. . please help!
- Do you Risk Damaging your amp by using an attenuator?
- Have you ever tried this mod?
- how much power...
- 2x10 tremolux cab
- 1968 Bandmaster Makeover AB765
- Mixing Cap Brands
- Is this an acceptable way of replacing big caps..?
- How to tighten tube sockets?
- Please help settle this transformer question
- Where To Find The Following Caps...
- '66 SUPER REVERB BF changing power tubes
- PT question
- Preamp Tube Identification - Help !
- :::Pre Amp Out - Power Amp In Question:::
- Bad Tube???
- Adding a LED to a Marshall footswitch
- Fender Champion 600 problem help?
- Modding a Bassman 100
- 2nd Gain Stage NFB in Early 35w Tweed Amps
- Are big filter caps suppose to discharge so quickly? (schematics in)
- Oddball transition Tweed Deluxe---anyone seen this before?
- Did moving cause my hum/buzz?
- Where to buy Heyboers?
- EL34 identification
- Adding Reverb
- Made the local Feedback Switchable... question:
- 1940's Amp ID Help
- what difference does dope make
- Help with ValveKing 212
- Fender tweeds - why short the secondary...
- need amp tech ann arbor/detroit
- Orange won't turn on! Help!
- More presence out of the presence control...
- Blues Jr-replacement tubes
- Super Reverb hiss
- New Production 6L6gc with largest pins?
- Power supply Question/Deluxe Reverb
- Plate Voltage eluding me !
- Amp Bulb
- International 12AX7?
- Early Breakup on '95 Blues Deville
- 6L6 tubes in a Deluxe Reverb
- bad cat trouble
- Broken Trace (Pics!)
- Broken Hiwatt... Suggestions?
- So if you have an amp with 8 ohm and 4 ohm out can you use both?
- One tube getting REALLY hot!
- Power tubes, help!!!
- 16 ohm minimum impedence question
- individual bias pots for each power tube
- Tweed Champ Has No Top End
- Ampeg Gemini sounds like a ring modulator
- really bright gibson skylark
- Output transformer & Rectifier Tube Question
- Quick dumb question about wattage
- Do you really need to bias your tubes?
- Shunting highs: What's your favorite approach
- So if I'm already faced with the issue of old wiring... (2 prong to 3)
- Bias Monitoring Question
- Reverb send & receive as an effects loop
- FX loop
- Best way to install adjustable bias in 5E7 bandmaster?
- Bias on a 93 Blues DeVille
- testing RCA 6l6GC tubes
- Ceria OTS schematic?
- Can you identify this unmarked EL84 tube?
- Fender Supersonic Bias...I smoked the R140
- I just troubleshot and fixed my amp
- Trouble emission testing Russian 12AX7's?
- Mexican radio on my VT-40....
- NOS Preamp Tubes VS NOS Power Tubes...
- TAD Tube Problems
- Tweed Princeton 5F2A questions
- Fender Super-Sonic MODs
- Isolation transformers....
- help - creating head out of combo!!!!!
- 5e3 build project-need some help pls
- replacement for NOS Philips 7581a's
- Interesting Fender AB165 Bassman -> Express Mod
- Power Amp question
- Vp=480V on new-production 6L6es; OK?
- solid state question, Fender Pro 185 problem
- issue with '66 bassman
- Funny what you find if you take a close look...
- Signal Generator Sucking B+??
- need the straight dope on Weber kit pots and tube sockets
- How would you go about tightening the bass response up in an amp?
- '68 Fender Deluxe Reverb: New Reverb Trasformer
- Changing tubes in Pro Junior
- orange ad30 htc keeps blowing main fuse, please help
- Blues Jr Speaker install
- 71 sf Vibrolux issue's
- Using a Y connection to use the pre amp in my head to supply sound to 2 power amps
- Budda SD18 making crackling noise
- Gretsch 6162 reverb tank dead
- Bad Transformer
- Vintage HiWatt re-bias, need help
- Replacement tubes for Blues Junior?
- Cracking in the Fender HRdeluxe
- US amps with step-down trans in Europe
- AB763 Low Humm Help
- JBL Pro 15" Model- 222OH ???
- Gretsch 6149 Reverb Schematic?
- JCM 800 won't bias
- Biasing NOS Philips ECG 7581A (6L6 variant)
- Fender 1962 Deluxe Wiring
- Two Tubes Redplating (See Inside for Free Bonus Symptoms!)
- Id tube from etch code ?
- Allen Accomplice: Pre-amp or Power Tube Suggestions?
- Power Tranny for Bassman (sort of...)
- Partial Ceriatone OTS schematic
- Removing a reverb spring???
- Need Help! BFSR with blue glow on power tubes
- Switching between filter caps
- Which High gain pre amp tubes
- Selmer Treble & Bass issue
- Converting a Marshall 9100 for EL-34s
- Using the different inputs in LTP inverter?
- JCM 800 boosts when volume at 7?
- Recommend me an iron for doing chassis grounds
- Problem biasing KT88s
- Egnater Tourmaster Footswitch Jack Replacement
- EF86 Vox/Marshall Clone Issues
- +B voltage of the Drake 789-87 PT
- out of phase??
- 4x10 ohm questions
- Blackface Princeton Reverb Cabinet Plan/Dimensions
- Bias Tools. Today I decide.....
- 10uf 450V caps?
- Issues with Sovtek MIG 50
- Volume fluctuations - two amps doing this.
- New to 7591's - how should they look when running?
- Mesa Nomad 55/ Transformer Upgrade?
- Wattage Question concerning the Peavey JSX
- strange reverb hum ab763.amp has been sent twice to tech
- SDGvintage kit experience?
- 5F4 Super questions
- Attenuation of a 15R speaker
- Unity Gain?
- Help! '65 Ampeg Rocket2 began to 'hum' today?
- Bias isn't high enough, but the pot won't go higher
- Biasrite issues
- Mystery box of Tung Sols...
- Hum on the FX RETURN on my Budda SDII ??
- The Use of an unknown Transformer??
- Bias problem
- Static from Deluxe Reverb
- Thinkin' about having someone do a build ala Fender
- Bluesbreaker re-issue suggestions?
- Reverb tank issue on my Matamp
- JCM 800 Volume Issue
- Dealing with the screens on a 5E7 (a question or two)
- Fargen Blackbird blows fuses.
- dumb speaker question
- Marshall JTM-60 squealing, and NoVA amp techs?
- 3 Prong Plug in Europe
- Resistor Question
- Deluxe Reverb Volume Problem
- Brown deluxe bias issue
- MIJ Raytheons???
- 1/2 blown OT? Just confirming
- Anyone have any experience with the Raytheon 12AT7?
- Tube amps can kill you!! I understand...
- PA Question
- Question on screen grid resistors
- Parkhead Marshall Mod does it work?
- My Marshall is in trouble.
- Marshall OEM 12ax7-what are they?
- Mackie 808S mixer/amp question
- components coming loose?
- amp intermittently cuts out
- has anyone measured/charted the temp. characteristics of CC resistors?
- Vintage amp repair anywhere
- Allen Old Flame Dies Suddenly
- Master volume not working question.
- blues jr issues
- Sensitivity of Vintage Jensens?
- Burn in: What do you do??
- Where would you look first?
- LED Wiring Guidance for Single Button FSwitch
- Can Power tubes go microphonic?
- Bassman 1964 blonde what has been replaiced?
- Preamp tube change-outs
- Reverb bag & tank installation help
- Can/should electrical contact cleaner be used on tube sockets from time to time?
- Do Class A amps require biasing?
- Low whistling sound kinda like feedback
- how does a channel switcher work...technically...
- JCM 800 Issue (2204)
- If your starting to doubt your AC15? (Mod Content)
- Help troubleshoot my McIntosh MC 240
- AC30 Info Please
- Installing a tube bias pot
- Pull tubes in a 4 x EL84 amp?
- Blues Junior safe with 4 ohm load?
- When you cant find the right multi cap??
- Deluxe Reverb Reissue Footswitch question
- Where is the bias pot in my Rivera Rake?
- Bias and rectifier tube swap in Tweed Deluxe and Tweed Bassman
- When a filter cap goes bad....
- Why No Sound?
- Can you fix "loose" preamp sockett
- Difference between an English and Chinese made Celestion Vintage 30 speaker?
- How to determine the correct reverb pan?
- Beginner Amp Kits?
- Which pre-amp valve would be V1 in my Carlsbro 60 Twin?.
- Mesa 50/50 conversion to EL34's
- How hard is it to work on an amp?
- Fender reverb tweaks, mods?
- National 12AT7?
- When caps go bad....
- 3x10" speakers in a combo
- Transformer Info
- Amp Buzzing?
- Powerblock preamp similar to Ampeg SS?
- Bias and wall voltage
- Yugoslavian Telefunkens
- Power tube falls out at high volume.
- Phase Inverter missing pin
- Fender '68 Deluxe Reverb: Treble acts like a reverse master, cuts Vol at 10
- GE 6V6GTA vs Brimar 6V6GT vs Tung Sol RI's
- Source for a tranny for fender brown deluxe (6G3)
- Trout, Brad I found the treble feed back issue
- How much do capacitors & trannys affect sound?
- How To Calculate Wattage With Mismatched Speakers
- AMP not right - HELP?
- SF/BF Twin Reverb- a couple of questions
- Installing a detachable power cord
- Help appreciated - strange hissing noise
- Weber Channel Switching Boards
- Calling all techs....(this is a longshot)
- cbs champ schematic
- Soldering Iron Temperature
- ghost note causes
- Rhodes Mark I trouble
- Mdifying cheap speakers for better tone and more power
- What are Teflon caps?
- hayseed 30 owners
- Multimeter / discharging caps question
- Groove Tubes 928-PR Converter Question
- 66 super reverb
- Replacing an 8ohms speaker with 16ohms in my combo - will the amp fry? good/bad ????
- Traynor amp making distorted sounds