View Full Version : Amp Technical Info
- Lead free solder for RoHS
- Tube Springs? Those little springs to help hold em' in...
- 1959 Siemens VS 1958 Mullard...
- suping up an hold supro - hints?
- Help with a Crate VC30 project.
- Turning A Gain Control Into A Volume?
- Fender Amp - Neutral EQ Setting?
- Are all Silver face Champs designed only for 4 ohms speakers?
- 6L6 Power Tube Opinions
- Reverb Unit on 1970 Twin
- i want to put kt88's in my or120
- ef86 / ef806 -- same thing?
- Whats on your bench?
- Bad preamp tube socket cause microphonics?
- Tube converters...
- Cool Mullard Score!
- 5U4 in place of a 5AR4?
- reverb tank impedances (AC15CC1 replacement)
- Tube question for the experts:(RUBY)
- Couple of questions RE: plexi clone...
- Crate Palomino V-32 bias?
- "waves" in circuit boards
- Soldering 12ga wire
- Schematic for Gretsch 6162 combo?
- poo-bar...jcm800 prob
- Convert from 6L6 to EL34s?
- Need Groove Tubes Trio schematics
- Yet another "my BFDR makes a funny noise" problem
- Class A Self Biasing
- need help with a Marshall part
- Switching pops
- Interesting old Univox amp, question
- Two Stroke Amp by Dave Hunter
- Sovtek Mig 100. What tubes should I buy?
- Fuses: AGC and MTH types
- Help identifing power transformer
- Amp techs! Help me tweak out the harshness!!! (Engl schematic encl.)
- How hard would it be for a first timer to build this?
- weak fender 'vibrato'...
- Is there only 2 positions, RE Fender Legs
- 7025 v. 12AX7
- troubleshoot my Holland
- "Plexi" amp kit?
- Ampeg SJ-12R, quick question on biasing?
- Lead12 Ministack head problems...
- Wiring 1/4" right-angle phono plug
- Power Scaling: Fixed Bias or Cathode Bias ?
- Fender trans-impedance power attenuator vs. Ultimate Attenuator
- Why would a tube socket arc?
- Filter Cap size for 59 Tweed Deluxe
- tube choices for a h+k duotone EL 34's
- LORD VALVE? (Help)
- Budda Superdrive Mods
- Blackface is squealing?
- 6L6GC - KT-66 question
- OK,I may just want these! (KT-66 content) help needed though
- Trying to troubleshoot low-output issue on my Bandmaster...
- Can anyone tell me where V1 is on my Vibro King?
- variac vs regulator
- Amp build seminar
- Need info on a Power transformer
- rectifier tube sub? GZ34-5U4GB
- What amp is this??any info
- Help Me Date A Princeton
- Q re: tube rectifiers and sag
- Marshall Amp Noise??
- building my own cabinet?
- Crap!!!!
- Rivera Power Drop
- Hot Rod Deluxe problem
- Fender amp Tube question - Please help!!
- Mesa Maverick acting strange need help
- SS rectifier in Rocca Custom 40?
- Speaker wiring help.
- Fixed that problem, so why are the plates orange?
- TUBES: its RP, not MU, that's important!
- Ampeg B2 power loss
- AC30 BM Help!
- Univox bass head repair. Puzzled
- jtm45 clone bias WAY high..
- 6V6s: new Tung-Sol or JJs?
- Variable bright cap control in blackface Fender?
- Is my Rec Tube Fried? (pic)
- Epi. Valve jr. head help
- phase reversal pedal?
- 4x12 wiring question
- Fargen El Bastage Power Tube Suggestions
- Deluxe Reverb Reissue questions
- '63 Bassman is noisy - help
- Locating Bias Trimmer...
- biasing problem....
- Biasing method for the first time...
- Adding standby switch?
- What Causes Amp Idle Hum
- Semiconductor GP02-40 (4KV)
- 6SL7s compared to 12AX7s
- 64 Bassman question
- Best choice for Phase Inverter ?
- DR with 450V on the plates. Problem?
- Mains fuse blowing on Matchless Chieftain
- Champ 5F1 questions
- What A Great Find!!!
- RCA 12AX7 short plate revisited
- Amp Build Seminar
- 6BQ5/EL84 and 7189
- How is it possible..
- Why doesn't my wah work
- Help: amp blowing fuses: gig tonight!
- Are a 5aru4 and 5U4 interchangeable?
- NEED HELP: SED =Winged=C VS. New Sensor Svetlana 6L6GC's
- Do you think I might need a cap job?
- Star Amplfier problem
- HELP i'm stumped.
- Power questions not enough Power to run amp?
- Bogner Metropolis volume pot
- Tube swapping: 6L6 for 6V6 and AX7 for AT7
- use a speaker with no cone as a dummy load?
- transformer shunt method biasing weirdness
- Marshall Bluesbreaker RI tubes swapping
- Question for those who mix speakers.
- Another Amps 101 question: How are tube sockets numbered?
- PODxt Problems
- Angus Young and the mysteries of Power tube compression
- What Makes The Biggest Difference???
- Not an amp, but it is technical info
- Tech question, help me out here
- Ohms on a 1972 Traynor YBA-1A
- How many watts is the JTM-45?
- What could this be?
- Tube 5Z4 ?
- New 6l6 tube problems
- Which is worse: lower or higher impedance ...
- Ghost Notes
- Help me out with bright cap values, please
- Line voltage fluctuation ......
- weak reverb, Gemini VI, schematics included
- Need help with amp slaving
- Funny Sound in BFSR
- Fargen Blackbird Combo blowing main fuses...
- Tube types and generally specific sounds and tones
- Where there's smoke.....YIKES!
- PSA: Lots of schems here...
- Where to get 8 pin power tube sockets and which brand ?
- Correct Grounding?
- BEST 6L6GC's...money not an object?
- Where To Buy?
- Bias voltage Doubler - Brain Flatulation
- Which NOS Mullard GZ34 do I want?
- GE 12AX7 blackplate pic
- Was this a bad rectifier tube or power tube?
- How to reduce the pots noisy.
- You Make the Call
- Blown cap in '71 Marshall 50W
- some tube socket(s?) aren't functional in my SF Bassman
- I want to reduce the power of my Crate VC50
- Fender Reverb Self Generating a tone?
- Fender showman power tube overheating
- Old tube find-junk or treasure?
- 7355 tubes:industrial 6V6 GTA??
- Best tube socket AND pot cleaner
- Could this be a tube problem?
- Dumble on Ebay with Pictures
- Wanted: circuit diagram for a crateVTX200s
- Hiwatt - ??????
- e84L v. el84
- 6ca7 or el34
- Bitten by the bug
- Best time to check bias?
- Switching between 6L6s and 6V6s... rectifier??
- What problem might my amp have?
- Shiva Footswitch Screwin' Up!
- Mixing Power Tube Types in One Amp
- Amp sudden microphonics/nasty feedback problem...please help!
- Has anyone ever used 6Y6 power tubes?
- How hard is a cap job on a Fender Princeton?
- Biasing with a SRS UNIT (anyone?)
- What is going on?
- Is this safe?
- Using a guitar amp head for bass?
- New tubes in a DRRI...do I have to rebias first?
- Cap Polarity
- how to make an attenuator
- ef86 front end with 2 el84's build BUILD
- convert tube rec to ss?
- choke questions
- What could cause "Machine Gun" noise?
- LED hum
- Combo Amps & Bypassing Internal Speaker(s)
- 73 SFDR half volume & crackle
- Need help !
- Weird hum in my DRRI?
- Amp winks off. Blown fuse. Bad rectifier tube?
- Sound fade out, noise fade in
- MOV Question
- Just how similar are the JJ 6v6s to 6L6s?
- Yellow Jacket Problem (74 Twin Reverb)
- Cab Wiring Question
- DRRI - Deluxe Reverb reissue questions
- Speaker install question for vibrochamp
- How do I varnish/shellac my tweed amp?
- Problem with 12AX7 and AC filament.
- Vintage Danelectro reverb unit - help needed
- Tube Questions (5Y3GT)
- JBL D208 8" speaker -- good for a Champ?
- Leslie cabinet
- RC Networks... the math and such.
- PV Classic 30 & It's Lack Of Standby
- How Feasible Is This Design ?
- JJ Tubes in Mesa Rectoverb?
- Rockin' New Tubes for a Bassman Clone
- Problems with JJ 12AX7 Types
- Tophat Club Deluxe - Biasing?
- Quick question...
- Whis is louder-tubes or transistors?
- Tube Buffs..(Preamp Question)
- RCA / Sylvanias ?
- Bored
- Gibson Goldtone tube help-
- Superbass not working... help
- Wattage/Power Question
- SS amp and a "pop" when powered up?
- Recommend some WI techs...
- 1967 BF pro reverb: Noisey reverb
- Biasing trouble with 1959 SLP
- Metal Base GZ34
- jcm 900 4101
- Anyone using PA heads for guitar?
- Another Class A/AB thread
- Preamp tubes for Reeves Studio Stage MK II...
- 63 tremolux w/ 6v6s question
- What are the two outputs on the left for?
- RF noise and whatnot
- help! my amp is blown!
- Amp squeals uncontrollably
- Metal Panel Marshall
- Hiwatt Custom 50 repair.
- My Guytronix build
- 60 cycle hum in a Fender amp
- Help - I can hear another band
- Weber Bias Rite
- Mesa Studio 22+ very noisy!
- So what would happen...
- Please help with star ground
- Mesa F-50 hum problem on stand-by
- TAD mustard caps
- OK How do I connect this?
- How do you tell what ohm it is?
- Help ID 6V6GTA
- 4x12 wiring question...
- Cure Tube Rattle w/ a Big Fat O-ring ???
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