- Preamp switch
- Sprague Atoms.........
- Modding a Peavey XXX
- Subway Blues buzzing
- Ok, it is chassis whole time.........?
- Speaker load question
- Weber vs Jensen
- ac rated caps
- Tone stack vs. preamp filtering - which has a greater effect on the sound of an amp?
- weber speaker arrived damaged- return?
- background noise on old ross flanger
- 118 Volts in my house!
- Anyone ordered through Ampwares??
- Opinions on Best Tube AMp Book
- CE Distribution
- Blackface Bassman Ext. Speaker Jack Question
- Mojave input jack issue?
- help - my sovtek quit working!
- Popping Input Jacks
- Laney VH100R Footswitch
- Blowing fuses
- Class A in push-pull vs Class A/B, etc.
- Turned my amp on for 5 seconds with no load today
- Speaking of output transformer with no load . . .
- "loud Noises!"
- Bias Question - Hot Rod Deluxe
- Is there a trick to this? 64 Super reverb snaffu
- switch vs. pot
- Cap question
- Question about EF86 and 12AX7 tubes [Vox AC15 Reissue]
- Multimeter - quick tutorial?
- Preamp tube question on a Gibson Falcon GA19RVT amp?
- Prewired boards?
- Speaker Frequency Range Question
- JCM800 2203 No bias voltage. Help!
- Hickok 533a settings for 6BQ5?
- David Allen Bassman Head
- My ideal amp...doable?
- Signal Loss...Helpful suggestions/advice needed
- P.A. Mains are super raspy and "razory" sounding!
- Amp on Standby damaged by not having speaker connected?
- JCM800s Questions
- How to Build a Tube Amp
- I have a hole in my CRex!
- SF Champ - Ext. Speaker Cab...?
- How does an misadjusted biased amp sound?
- How come 12ax7 can't be used as power tubes?
- Classic 30 PC board?
- Blackface Bassmans/Bandmasters
- OK - why does the schematic say one tube but the amp has another one?
- Fixing cone cry
- Choke Tweed Pro and Bandmaster
- AC30CC-1 Fuses
- Biasing and plate Voltage
- burning smell from my Champ
- Blackfacing + Re-cap of 69' Twin -> Loss of low end
- Amp buzz... what's the fault...? Please help... :(
- mods for warming up a deluxe ?
- Value drop for non-original OT - Tweed Fenders
- Mystery 12A_7 variant
- Are all 5Y3 types interchangable?
- Matchless master vol. mod.
- is there a bright cap in a SFDR ?
- Slim line tube dampers?
- Bias 1ohm Resistor Question
- Linear Taper Pots??
- Tube Rectifiers - school me...
- Biasing an amp question on readings calculations
- Dropping B+ in UL Fender amp
- DRRI bias??
- Justonwo makes his foray into vintage amp troubleshooting - questions.
- poweramp gain vs preamp gain
- 12az7 ?
- Marshall JCM 800 PT heat and pilot light question
- more bright cap questions
- Amp techs please help -AC30 HW is dead!
- Vox wah help?
- tube advice needed for JTM45
- moding a peavey classic 50 head
- Boneheaded maneuver - what did I break?
- Where does this Fender amp part part go?
- Fx Loop or extra poweramp ?
- Recommended mods for JCM800
- Use a PP OT for Single Ended application??
- importante..pleese help mee..V1 and V2 positions for OR120? Bias settings?
- Uses for a 12AV7
- Amp problem diagnosis please
- Dual Showman Power Xformer Question
- EF86 voltage parameters
- low frequency hum problem help!
- 6550 to EL34 conversion question
- Problem maybe? Not sure
- mods on a soldano hr50
- Most Common Gear Repairs ?
- Hum balancing
- Wanted: Amp tech NW Ohio SE Michigan
- Amp/Tube Tech advise seeking
- SRPP/"pentode" wiring for 12AX7?
- NOS Sprague Caps
- Help Me Find a DRRI Pot Please
- Transformer question
- DIY 12" Speaker Baffle for a Silverface Princeton?
- Tube or Amp problem ?
- Discharging Caps, other safety ?'s
- White flakes inside 5Y3 tube - problem?
- My Marshall Lead 12 Stack sounds bad....
- Tube Testers.......
- Weird amp noise and suprising cause.
- Can I run a 16-ohm on an 8 0hm amp???
- Doesn't ANYONE mod solid state amps?!
- 8 and 16 ohm speaker in the same cab- help
- Replacing output trannies, does it change the tone?
- Mismatch and Biasing Questions
- Super Reverb keeps blowing fuses...
- 6G6-A secondary AC voltage
- Ground from speaker to chassis?
- keep existing OT or multi-tap it?
- I'm considering the Torres or Jackson Fender Concert Mod - any suggestions??
- How long can you leave a cranked tube amp on?
- Speaker repair question
- PT and OT questions
- Reversed Speaker Leads...Potentially Damaging?
- hot rod deville 4x10 problem
- face plate changing question
- Cleaning or replacing bad control pots
- Bumbox Lead 1: SE or Push-Pull
- Use of standby switch & preamp tube question
- Turret boards - eyelet question
- Preamp tube bias matters!
- G12h30 louder than Vintage 30
- Bias problem on a Carr Mercury
- Deluxe Reverb owners! What's in your V2?
- Parallel Tube Question
- Studiotone Head...No footswitch = No Reverb?
- Sovtek 5V4G Replacement
- OR120 biased at 37?
- Anyone know a good Amp Tech in the NoVA / DC area
- 68' Princeton rectifier tubes
- Peavey Wiggy - conversion/gutting to Tube
- Deluxe Reverb rectifier query
- Speaker magnet chipped...
- caps in the doghouse in deluxe ?
- Quiet replacement fans...
- Retentioning tube sockets, any advice?
- Making Speaker Cables
- Anyobody know what Marshall white branded 12ax7's are?
- Recommendation for Capacitance meter
- Strange noise in my JCM 800
- Jack manufacturer
- Amp Trouble ... help!
- blowing fuses when turning amp on
- Bogner Metropolis headaches & diatribe=help.
- switching from 6L6s to 5881s
- i need a 820k ohm resistor for me OR120
- Traynor YBA-1A ?'s (Pics added)
- After much tweaking...some favorite JCM800 mods
- Wood expansion issues with speaker cabs
- Strange noises
- DSL401 Help! No Reverb
- Capacitor Polarity
- Speakers wired ?????
- C-Core transformers, good?
- bassman blowing fuses
- Marshall JCM800 2203/2204 Same mains transformer??
- Problem with first amp build
- Switching supply/Pedal compatibility thread
- 5f1 Help!!
- 25v caps in deluxe
- Source for replacement output Transf. for Marshall JCM600?
- Impedence wiring option for simpletons question
- Difference between a BFTR and BFSR.
- Marshall 6100 30th anniv top, convert to 6550?
- Why upgrade the Transformer
- New Amp/Mod Questions
- Measuring current draw?
- Disconnecting Channel 1 From Phase inverter. Is this how i do it?
- Biasing a Tophat Emplexador with mV bias tester?
- Help hunting down static
- Divided by 13 Click channel tube
- Can someone help me bias my Alessandro Bloodhound?
- How can I measure the B+ on my Super?
- NFB around a Concertina splitter
- 6L6 put into Deluxe Reverb. loss of bass
- Wrong cap in Vibroverb... what do you think its doing?
- Weird amp noise after initial turn on
- How to slow down tremolo on a Pro Reverb?
- Rivera Knucklehead Volume Fluctuation
- Can someone easily explain speaker wiring?
- JCM800 No-Sound
- Not so clean channel...
- 5AR4 uncertainty.
- Traynor YBA1-A Overhaul
- Victoria 20112 and a red fang
- Major crackling noise " need help"
- Installing Heritage Celestions--Ugh.
- Power tube "hardness" rating question...
- Speaker swap...easy to do?
- EL84's at 600v plate?
- Need to replace output tranny in Traynor YBA-1AmkII
- transformers in this little amp have no EIA codes!
- ???Marshall Combo Question???
- The black sable SED 6L6GC
- Extra gain stage
- Speaker ohm / cab question
- Good/Bad Idea.... Old Cap ?'s
- Best tubes for my Fender Blues Deluxe?
- EL84 OT question...
- Odd one: need light strip for back panel
- what does this cap do?
- Please help with instlling a pentode/triode switch?
- Preamp tube cathode cap bypass switching
- 6v6s in a SF Bandmaster
- screen grid resistor questions
- Why do some amps use normal blow fuses?
- Sound Of Crossover Distortion?
- 5E3 clone - Options for power trannies
- Marshall Valvestate hum, help needed
- Princeton Help.
- Best source for old style multican caps?
- I'm considering an amp kit - suggestions?
- Anyone know the available heater current in a SF Princeton?
- true PTP layout question
- No signal on a Lightning clone?
- Problem with tubes close to speaker magnet?
- Blown transformer? Blown cap?
- technical question--what is negative feedback?
- pot question
- Dummy load required on unused channel of stereo tube power amp?
- Schematicheaven down?
- 2x6V6 = 25W?
- Buying used amps? Revalve?
- So what are signs of an improperly biased amp?
- Removal of reverb tank on tube reverb Fender?
- VOX DA5 grill cloth needed....Help please.
- Boogie Mark IV - losing channel 1
- Low B+ Voltage on a Fender... What effect does that have?
- GZ34 vs 5U4 in PR
- Question on single ended amps
- cloning?
- Tubes for vintage Marshall 1974X
- Tube brand question
- anyone ever build a champ w/100w output section?
- Odd A-B-Y behavior - please help?
- Fender Rivera Concert issue
- How do you enable reverb on the normal channel of a DRRI?
- reverb hum problem, please help
- DRRI: Source for pot with push/pull switch?
- Doh! amp on stby for 4 days
- roland jc-50 breaking up early
- Another ohms question..