- Plate load resistor mod for AC30CC
- Looking for an Amp Tech in Los Angeles Area
- Fuse question
- Help! My new (old) Magnatone got boinked by UPS!
- Shielded wire from input jack; ground one end???
- FRED vs. THD Reactive Rectifier
- Hiwatt transformers - today's equivalent
- 5E5 Bassman cab vs. 5F6 Bassman
- 6L6GC identification?
- ohmage help!
- 5AR4/GZ34 = 5V4GA (Philips ECG/JAN)
- 68 Bandmaster Reverb cathode biased?
- '68 Traynor Custom reverb; remove ice pick highs via slope resistor?
- Help in re-capping my Gibson Falcon please?
- Current Production 6V6s?
- Identifying old versus reissue Mullard EL34 tubes?
- Question on KT66s
- Biasing 5881's
- Tube / valve Identification Codes
- What is the VibroKing a combination of?
- Zenith amp conversion update.
- Using a 1/2A fuse in place of a 1/4A...
- Question for you pro designers
- New Tubes For Fender Twin
- Can someone ID this OT?
- New production tubes vs NOS
- Thoughts on Hammond OTs needed
- freezing tubes?
- What happens if I leave the 2 prong cord on a '70 Princeton Reverb?
- 22uf/500v cap on plate resistors?
- I think I killed my amp, HELP!!!
- Need tech in So. Fla..
- BF Bassman for mostly Bass. Tubes??
- Amp Cuts Out Until Well Warmed Up
- Musicman RP-100 EL-34 amp worth fixing?
- Tweaking the Tiny Terror - check my work?
- Want to run 4x10 cab as either mono or stereo
- More tube questions - troubleshooting - 6L6 GC
- Tube socket center lug?
- How to find V1, V2 and V3 tubes position in a amp?
- Ribbed Tele 12AX7 distortion characteristics....
- Unbiased, unmatched pairs for "vintage" tone?
- Best prices on caps, resistors, amp stuff?
- cap values in the power supply
- Two 2x12 cabs, one head
- Wohoo! My C. Rex is here!
- Ready, Set, STOP! Filter caps discharged?
- Crazy tone knob question
- Question about JTM45 clone quirk
- Max clean headroom/12AX7?
- TAD 6L6WGC Max Plate Dissipation?
- Clear component with silver foil underneath; cap or resistor?
- Stupid amp question....ground switch
- reverb in both channels´s pic. Is that ok?
- How does a tube amp work?
- Amp Safety
- ohms mismatch in SOLID STATE amps
- NF loop question
- AA864 schematic?
- How do I mod 'Normal' channel into outboard style reverb controls?
- So I Droped My Boogie Recto
- Hiwatt related power tube question...
- transformer shunt bias for fender concert
- Are ceramic speakers louder than AlNiCo ones?
- Maybe a dumb question to you guys but I really want to know. Converting old Iron Ques
- 6V6's in a Simul 395
- minimal tube flashing - OK or not ?
- How to bias a Rivera Rake Reverb + tubelayout
- How to improving JCM900 tone? Can it be done?
- Bleeder resistor - why not?
- Are KT88's Interchangeable with EL34's
- 5U4 in place of a GZ34
- Power transformer getting hot at low volume...
- Tone tubby 10's?
- sound but no sound
- Diy Amp Kit?????
- Variac?
- Biasing my Allen amp--settings?
- Cathode Bias Rules !
- Jensen speaker advise needed
- converting a deluxe reverb silverface 1979 to a pro reverb
- Electronics Parts
- Best way to cut speaker holes??
- Reverb that died... Any thoughts
- Need help with Twin Reverb
- Tubes I can't ID...
- 6L6 GC trouble
- Ampeg repair reccomendation
- Vox AC30CC How far into mod-land?
- Two easy ways to beef up tone of Fender blackface amps
- Tubes in amps and switching them
- Back to the drawing board that did not work????
- Biasing-How much difference is ok from one half of power tubes to other half?
- trouble with a mesa quad preamp
- el34-el34l-kt77 in single ended amp
- where to get led's
- 400 volt caps in Fender Pro-Reverb (SF blackfaced)
- Filter Cap Values
- 4ohm out, 8ohm load.
- Help with Tube installation
- So.. how does one clip thou bright cap?
- Matchless amps - fixed or cathode bias
- Can TAD 6V6s be used in a 500 volt amp??
- Guitar volume pot on guitar - half or less the volume
- Help! New Two Rock Reverb Hum!
- Wanting to build my own low-powered (1 watt?) amp head... Resources?
- How much is this gonna hurt?
- Schematic confusion
- 6L6WGB, 6L6GC, 5881 - Differences?
- Can I make this FX loop foot switchable?
- Looking for a SF Bay Area amp tech
- convert champ to run 6L6 or 2 6v6's
- Replacement filter cap values
- Tube shields - yes or no?
- What schematic drawing do you use? & file formats?
- 18Watt TMB Plexi Build (Complete, Pictures)
- Whats going on with my Deluxe Reverb?
- My mullard 12ax7 in on fire!!!
- Fender Champ speaker upgrade help...
- Why Don't Amp Companies Provide Parallel FX Loops? They All seem To Be Series.
- Peavey Classic 30 combo crackling and popping
- Replacing The Output Tranny
- NOS 12ax7 recommendations - my thread lost....
- Vintage Reverb Part Numbers? Gibbs/Hammond?
- Rivera Static Stumper
- Adding LED to footswitch?
- Using Guitar/Speaker Cable
- 5963 tube info
- Putting Celestion Blues in an AC30...need help...
- What happens if the leads to the speaker are reversed??
- *noob alert* replacing speaker
- Tone Question..........
- Potential Project
- Checking bias in ÷13 RSA 23
- Taming sound - suggest me a 6L6-type tube/ valve, please
- Pulling EL-84 tubes for half power
- Pop and volume drop in Vibrolux?
- Brown tremolo in a BF-type Bandmaster...
- Load Dump - Ideas?
- 70 watt pro reverb with KT66 and EF86 pre?
- Bassman Hisssssss
- Capacitor Substitution?
- How to tell when power tubes are too hot/failing?
- Tech to build allen amp Detroit area
- Values for matched power tubes?
- Replacing the two prong on vintage amps?
- Is this even possible? Or just a stupid idea?
- Philips JAN 12AX7WA
- Can you recommend a 12AT7 for Fender Reverb Unit?
- Repair of small hole in speaker??
- Different Tube EQ Curves
- Class A vs. AB amp
- New Allen Accomplice Jr. project
- Installing filter caps without variac?
- Tube Dampers - help or hype?
- 5E3 build ??
- Ampeg SVT CL Question
- w/ NO GLOW on a 12AX7, Can heater power alone explain it?
- Smoked my amp?
- Bias caps in opposite direction?
- When AC and DC collide....
- copper cap for 5u4G?
- i had a custom 1x12 speaker cab built. now its time to mount the speaker...
- Standby switch?
- One of the tubes in my matched quartet is redplating
- Hiwatt volume question, or lack of question...
- 2 NOS JAN GE 12AT7WC to be used, where?
- Help replacing tubes in Ampeg SVP Pro
- tube socket problem
- the Tube Store
- Super Lead Makes Buzzing Noises -- From Inside Head
- RCA Blackplate 12AX7 - '63 Bassman
- Quick tube question.
- Ampy not worky - I am sad
- Do EL84 tubes last as long as the larger EL34 or 6L6 types?
- 6L6 to kt77: problems?
- Screen grid resistors; ground one end?
- A Fender Concert (rivera)DUAL RECTIFIED!!!
- Nail polish speaker repair?
- Scoping line power & ripple? Power conditioners?
- What'd I do to my Fender Champ?, Help!
- Installed heyboer in C30 but.....
- Bias Rite measurement discrepancy
- 7027A interchangeability ?
- Hey tube dudes, whats up wid dis?
- Very strange problem with my SLO...calling all tech wizards!
- Speaker Resonant Frequency ?
- How to test tubes?
- Are tone controls worth it?
- Alu Power Resistors go short on overload..?
- Impedance mismatch-which T-fmr does it take out first? Then, are they rebuildable??
- Buzzsaw-ish sounding distortion
- Annoying rack hum that has me completely puzzled
- 5E3 Heater question
- recto tube swap?
- reverb tanks
- Tweed Twin Volume Pot question
- I NEED HELP!..Marshall 1959 HT fuse blown, no noise from amp.
- '59 Tweed Champ Capacitors Question (speaker question as well)
- What is gain?
- Electro Harmonix EL-34 question
- AA864 Bassman - Pulsating Blue Glow?
- Power Tubes at Lower Volumes
- Are my speakers too bright or should I wait and see if they break in?
- Fender Tremelo Bypass Mod?
- A way to hook up 6 speakers....
- Please Help w/ Radio Signal Problem
- Explain power tube and pre amp tube Distortion?
- New Gibson GA-5 LP Jr. Amp Problem and Question
- Spitfire mods - add Standby switch & reduce bias current
- Effects Loop Question
- Bias: Fixed, Cathode, Grid-Leak...What's the Tonal Diff?
- how do I install a PPIMV on a Marshall 1987x?
- Boost pedal question....
- What's blown speaker look like?
- Will different preamp tubes help this?
- how do i add effects after a tube amp before the cabnet
- Preamps
- Crackly sound on one note- Princeton
- Is it really that hard to build an amp?
- I want a cab that is switchable 4ohm to 160hm..is it possible?
- My "New" '79 Fender Twin Reverb and Lots of Questions
- Bogner Shiva - Reverb stopped working
- This Marshall ain't no Fender! Help?
- Rolls DB25 attenuater???
- grrr - lead free solder sucks
- How Bad is my Bassman Cooked ?!?
- Snap, crackle, POP! Chopstick test?
- Reverb tank replacement issue
- Sylvania vs westinghouse (short grey plate ID info)
- I love my Champ....but...
- Power Scaling Modules. Who installed them?
- Fender Reissue Reverb Problem
- 6P14P-EB sub for 6BQ5/EL84?
- Off and On Microphonics
- Un-ajustable fixed bias?
- What to do about owning a 220V amp in a 240V environment?
- Amp Techs>>need Help!! (1959 SLP Revisited)
- Help with Fender Deluxe Reissue Bias - Plate Voltage
- Preamp tube glow question
- Variac tone change
- What is LED distortion?
- Blowing Tubes
- Nasty Static from my Amp (Sounds like an old AM Radio)
- Twistlock Cap for a Supro
- Dual and triple rectifiers- what's the effect?
- Adding an effects loop to a Super Lead?
- JMP 50 watt. Add Tube rectifier or not???
- hot rod deville 212 cuts out(volume)
- Favorite speaker in a Super Champ?