- PPIMV Schematics?
- Calculation/selection of zener diode ratings
- Can my amp suddenly become extra sensitive to single coil hum?
- 15 watt tube amp and 15 watt celestion blue speaker
- Princeton Tone Pot
- Recommend me a Preamp tube
- NOS tube help
- Interstage feedback resistor
- Question about tying cathodes and using the same resistor and bypass cap
- 2 amps in stereo : humming/buzzing
- input resistors and guitar volume pot
- Speaker cab wiring question
- Unknown OPT question
- Effects of Speaker Rating vs. Amp Output Rating
- Can I leave the Bias Current Resistor In the amp permanently?
- PRRI Question: Odd Harmonic Buzzing
- Plate voltage question
- changing tubes...need help
- 60 Hz hum in a Mesa Mark III
- Converting 6SC7 to 6SL7?
- My Ampeg forgot the words?
- Connecting amp to cab- what cable?
- Need to test amp, can I use a resistor instead of the MV pot?
- Ampeg V-2, NEED HELP!
- Mesa Boogie Maverick Reverb Tank problem/need info
- Traynor YGM3
- Who made this 6v6 ?
- MusicMan RD-50 bias question...
- Tell me about Buss grounds-- it looks really neat and clean, any drawbacks?
- Cap across the PI plates
- cold solder joint
- '66 Deluxe Reverb cutting out under load...?
- Build a lower wattage "2204"?
- Pro Junior Rattle / Problem/ Love Thread
- Ampeg '65 Gemini I weak trem
- Ground loop/iso transformer DI
- Basic Electricity PPT on web?
- Need help installing weber effects loop kit
- Can someone help me with this schematic? (resistance question)
- Alright guru's....one more question
- Ampeg Gemini II question.
- How do i get more clean headroom from my Amp?
- JCM800 2204 50w Mark 2 Lead (gut shots)
- Amperex Bugle Boy
- speaker mismatch
- Dead AC30cch help
- Allen Accomplice sounding ice-picky
- 455 Plate Voltage too high for RCA Black Plates?
- Troubleshooting help needed; static
- Have any of you used Jameco electronics?
- Vox AC30cch smoking...help!
- Best Capacitor for Catalinbread DLS mod?
- Say I pair a couple of speakers with SPL ratings that differ by, say... 2 dB...
- help, my amp is crackling!!
- Here's a thread for thanking people...
- Broken AC Main on Matchless DC30
- Tech question on two amp projects
- AB763 Opto-isolator Orientation
- My amp wants to kill the new 6l6's
- Found some Old tubes
- Marshall DSL 401 no sound!
- Champ crackling
- Fender Tone-Master Clean Channel No Sound Unless...
- loud buzz when I plug into return jack in effects loop of Rebel 20
- Reverend Kingsnake tube driven reverb -tube sbstitutions?
- EL84 vs EL84M problem
- Blackface Mod?
- Matchless Hot Box- V1, V2 locations
- RCA 6L6GC
- Changing overall amp tone with cap values?
- advice on tube socket placement, (wish I'd asked this earlier)
- The Fender Champ: Cap value 2.2mfd at 25v
- Marshall Bluesbreaker Issues
- Ampeg SVT fuse cap!
- BF Deluxe Reverb : What settings are best for the Bass knob and Treble Knob ?
- High pass filter in speaker cab?
- Does it matter if you use speakers of different wattage?
- Soldering connectors for DIY amp to speaker cables
- swap EL34s to KT88s in vintage marshall
- Reverb pan in head cab question
- JCM 900 5881 to 6L6?
- "lightning" in a tube?
- Recommendations for scope and signal generator
- Fender 'The Twin' Problem!
- 5881 plate voltage question
- Fender Super Six Reverb Questions
- What would cause power tubes to not light up?
- 5E3 Tweed Deluxe: Changing tone caps?
- Fender Amp Head cab ventilation question
- Thinking of modifying my Valveking-- but I can't find the neg feedback?
- Change 5E3 circuit for cleaner tone and normal volume controls?
- Kustom Defender Amp - overheating?
- Rectifier tube.... what does it do?
- fender cathode bypass cap question
- Bogner Shiva Question
- Help! What is going on here?
- Variable resistor or voltage divider?
- brown super trem
- What tube will get me closest to a Mesa Branded Sylvania STR-415 6L6GC?
- Ok I need some new books to read.
- Amp Tech in Las Vegas?
- Burn in , best practices with a new build
- El34's in Twin
- Had to post this-- it's hilarious!
- Fender "Custom" Vibrolux Reverb problem!
- Amplifier voltage output
- 5E7 Biasing issues
- '72 Super Reverb blowing fuses
- Fender 135W Twin question - - OUTPUT TRANNY Pt. II
- the schematic says...
- Superlead has a static-y sound, what could it be....
- Will somebody please explain the Russian 6N2P tubes to me
- Trying to understand Speaker Efficiency
- BFDR help....again
- Can you run 8BQ5 tubes in a 6BQ5 amp ?
- What tonal changes can I expect from a cap job?
- Speaker ohm testing
- Realistic brand tubes are?
- Ampeg Gemini, Throbbing noise & Red Plate
- What is it that makes an amp...............
- Tremolo ticks on my vintage amp. Help please.
- Max plate dissipation of power tubes
- bf champ plate voltage
- baffling in cabs
- Peavey 6505 blows mains fuse with amp on standby
- Vibrolux (Silverface) doesn't sound good after re-cap
- Convert Bandmaster 6L6 to 6V6?
- Blues Jr. Trouble
- Is there a way to deepen the tremelo intensity on a Princeton amp?
- non polarized filter caps?
- Changing my speaker cab (1x12) from 16 to 8 ohms?
- Help with Marshall dsl
- Replacing tubes in Silvertone 1484 newbie questions
- Princeton Reverb II
- DRRI went silent
- Converting a Super Reverb to a 2x10 combo?
- Super Reverb Speaker Question?
- Think I fried my speaker -- what else might have fried along with it?
- Are mounting holes in speakers universally located?
- Bad Output Tranny?
- Thanks for your help!
- another impedence ???
- vintage Orange OR80 bias pot?
- Is this worth fixing?
- Fender Princeton Vibrato - Weak?
- Q's about tube Rectification: GZ34
- Musicman Died
- Modding epiphone valve special for higher gain and better tone
- Shuguang EL84's?
- LAB Series L5 buzz
- Tolex lifting...what adhesive to use?
- Marshall 2061x Stack
- 4 ohm output to combo speakers and to a 8 ohm extension cabinet
- Tone Difference Between 10'' and 12'' Speakers?
- ruby 12ax7 premium select?
- mixing an 8ohm and 16 ohm in one cab?
- 4 Ohm - 8 ohm Bandmaster Question
- Old tube hifi mod into guitar amp?
- Amp has no effects loop - gain>delay - what are my options?
- 12AT7 balanced for Phase Inverter?
- Vox Cambridge 30 - mid 90's - amazing sound but?
- Bandmaster TFL5005d to blackface?
- Houston Amp Techs
- I think i blew up my amp using a Hot Plate
- Where can I find this Filter Cap? Importance of the Values?
- JCM900 on the bench again
- USA made 6L6 identification
- What would be a good Kit/Amp for a first build?
- Tranny info needed.
- Power Transformer Rec. for BF Dual Showman
- amp starts out great, then buzzes, then drops in volume!
- 1948 Fender Princeton
- Planning a build and need help with Ohm's law
- 6550 vs EL34 : What should I do about my JCM800???
- testing used RCA blackplates?
- New mark V, but no sound?
- Sources for SS replacement "tube" for GZ43 rectifier tube?
- Metro zero loss Effects loop help with switch
- Should I drop more coin on my v2 pre amp tube or my power tubes?
- Probably a really dumb question...
- 'Nother reverb tank question
- 6g15 reverb unit
- Weber Z-matcher ohm question
- Mods to 1940's Phono Amp
- DIY 1x12 cabs (EVM-12L and Delta Pro12a) low volume output?
- Making an Amp in a Rack enclosure?
- Amp bias question - help please
- What's the difference between Sylvania's with Red and Yellow Print???
- Marshall C5 mods
- Rebuilding a Deluxe Reverb
- question on wiring ohms for supersonic 4x12
- Hiwatt running HOT!
- Idea to Cure Tube Rattle in Combo Amp
- Anyone build one of these?Jonesamps 3 tube SE Wreck
- Marshall Class 5
- "Repurposing" old radios and record players?
- Schematic help needed please
- amp comes on but no sound
- Looper pedal for speaker cabs?
- complete NOOB looking for direction
- Egnater Extension Cab Resistance Question
- No sound from a Vox practice amp
- Where to find some amp cab hardware
- Fender vol pot question
- How would I trouble shoot my reverb unit?
- 18 watt lite IIB input wiring question
- Brown Turds vs. Blue Turds
- Realistic 5U4 rectifier tubes question...
- Fender Super 60 - "fixed" bias question
- Celestion 10" Greenbacks- anyone try 'em?
- Amp tech in Irvine/Anaheim/So. O.C. area?
- AH!!!
- Egnater Rebel 30 problem #2 - just a preamp tube
- Help me identify this Siemens 12AU7
- fender twin reverb amp tube sticker
- Bench
- Great but easy mods for a Marshall Plexi
- el34 in an 800
- Replacing 2 prong on old LP Jr amp...question
- Awkward electrical situation!
- amp building help
- Kustom color options
- Princeton Reverb vs. Deluxe Reverb: technical differences
- Help me find a transformer......
- Replacement 10" for 78 Princeton Reverb?
- Bias Question.
- Ways to get the Fender reverb channel tone to sound similar to the normal channel?
- Trace Vellocette Replacement Transformer
- To bypass cap or not to bypass cap
- Parts Layout for Gibson GA-25-RVT Hawk???
- Bias Probe?
- Please can someone put my fears to rest on valve amps
- 5F1 keeps frying 10k resistor in the filter section . . . any ideas????
- Digitech DL8 acts weird in effects loop.
- Who's got Weber 450-100 cap cans; besides Weber??
- Refurbing a Silvertone 1482 to Fender Tweed Deluxe
- What kind of friggen soldering iron are you using for ground points on the chassis?
- Reverb Help!!!
- NOS Tubes Burned in Yes or No?
- Help with tube identification - Pinnacle EL34 ?
- 4x12 re-wiring idea
- Bright Cap
- Marshall foot spacing
- hardwiring a marshall to 120V
- Princeton PT
- Is it a Champ or Vibro Champ cab ?
- tweed champ build ideas
- Help! DIY amp build dead end...
- Question about voltage measurement
- Shorted out a Sylvania 6ca7, do I need a whole new quad?