View Full Version : Amp Technical Info
- Boost pedal question....
- What's blown speaker look like?
- Will different preamp tubes help this?
- KT77's in a Marshall SLP ?????
- Ceramic Caps vs. Film Caps in a Trem Circuit...
- how do i add effects after a tube amp before the cabnet
- Preamps
- Mesa DC-5 sounds sick (as in not good)
- 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
- What's the difference between a P15L and a P15N?
- Bogner Shiva - Reverb stopped working
- This Marshall ain't no Fender! Help?
- Rolls DB25 attenuater???
- grrr - lead free solder sucks
- How do I remove a bright cap???
- Socket/microphonics question
- How Bad is my Bassman Cooked ?!?
- Stupid question
- Snap, crackle, POP! Chopstick test?
- Reverb tank replacement issue
- Another Ohm question
- Using a 12AT7 as a gain stage.
- 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?
- EL34s - again
- Bright channel weaker than normal channel, where to diagnose??
- Will just 4 volt loss in wall power hurt tone?
- What to do about owning a 220V amp in a 240V environment?
- Related to my thread before, are 240V to 220V step down transformers available?
- 6n3C Russian tubes=6L6?
- Amp Techs>>need Help!! (1959 SLP Revisited)
- What's wrong with my amp?
- FENDER BANDMASTER vs BASSMAN(blackface)
- Help with Fender Deluxe Reissue Bias - Plate Voltage
- Preamp tube glow question
- ID'ing production year of Celestions
- Variac tone change
- What is LED distortion?
- Old Cap question?
- vox ac30/6 tb problem
- Blowing Tubes
- With the same cab, what's the volume diff. of these?
- 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?
- Reducing ab763 bass/verb pot values
- Matchless Spitfire transformer hum? What the?
- JMP 50 watt. Add Tube rectifier or not???
- hot rod deville 212 cuts out(volume)
- Can anyone recommend any good amp techs in London, UK?
- Where can I find hardware for vintage Marshall cab?
- Favorite speaker in a Super Champ?
- Looking for a superior amp tech in Alabama...
- AC Power Switch - why switch hot and neutral
- What causes an amp to become noisy?
- Building a head cab around a chasis...
- Re-tensioning preamp tube sockets
- Can you guys ID a "Tungsram" 12AX7 ?
- Ohm Tap Question ...
- Zenith 12AX7A
- Sudden bright tone on my JMP
- KT66's In A Low Power Twin
- Buzz/Hum from power transformer...
- Q: Value of bias feed resistors in 1983 JCM 800.
- Best $30 I've spent in a while
- Mesa Lone Star "Pops" when turned off
- Wired Up Another OT Tap - Now What?
- Sunn 200S revamp
- AMP techs in COLORADO??
- 2061x Lead & Bass Schematic & Layout
- Haltron
- Finaly built a subminiature guitar amp... now I need help!
- Going rate to have an amp biased...?
- Fender Super Six squealing
- Bias your amp...really?
- Old flame blew a fuse with new tubes
- European tube, flashing, i.d.
- Will running through an attenuator all the time ruin my amp?
- Star Grounding Location
- signal cap "polarity", finding lower impendence point via schematic
- OHM Question
- A quick biasing question....DVM content
- Capacitor Voltage Ratings and Resistors in AB763
- N00b question
- how to clean old Marshall pots??
- Pot in series with cathode resistor?
- Running entire preamp tube in parallel vs independent triodes?
- Does on EL34 Power putting on a ligth show mean a problem?
- Nice Chassis!
- tube question - mixing /matching 12ax7's?
- Autenuated Marshall 100watt Super Lead Strain question??
- Kt66
- where to get exotic woods for head cabinets
- Pro Reverb—very low output, distorted
- Blackface sound?
- Fender middle tone pot replacement questions
- Wiring Fender Bass and Treble pots....Got a question
- Ampeg B-25B spec question
- Has anyone had this problem
- 6100 won't do the business after ride in car.
- Marshall Volume Decrease
- Crate VC50 mod question...
- Inquiry: Biasing 6550's
- Stupid question - hoes does wattage work?
- Ruby 6V6?
- Impedance and ext cab question
- AC30...tadaaa - reverb quits
- How do you determine watts?
- Marshall jcm 800 6550 to el34 conversion ?
- 65 Fender Twin Reverb Experts I need Your Help
- NOS Telefunken Tubes-
- Low noise 12AX7s and 6V6GTs?
- Vactrol switching
- Anyone have a schematic for a switchable rectifier?
- 6L6's in a Deluxe Reverb
- Tube Score...ID Help
- Is there a way to determine an unmarked speaker's power handling?
- Ohms, Tone, and Volume
- Where to buy Groobe Tubes?
- Substitution of slightly larger Filter cap in 5f1 champ
- Tweed Bandmaster vs. Super
- How do Mullard EL84s hold up to heat?
- Bragging Rights - Dual Rectifier Fender Concert (Rivera)
- Couple of NOOB questions
- Tube Question: Speaking From Ignorance
- Switchcraft 228 Speaker Plug?
- Carr help
- Mesa Dual Caliber series Output Level control mod/improvement PSA
- Purpose for a Shunt????
- Challenge with V1 pre-amp tube...
- Using 1.6a fuses in an amp taht usually takes 1.25a - Ok?
- quick question about amp bias
- Mullard Long Plates and other questions
- 2Amp Variac...Will I go Bang ?
- Tech for Alamo Montclair Reverb? Philly?
- Will an Attenuator set a a few db reduction act as a full load?
- Advice with 1964 Silvertone
- Ken Rad army....
- palomino modding
- Marshall powerbrake at "Max"
- Weber Bias Rite (help?)
- Anyone using TAD tubes?
- 1951 Gibson GA-20 help
- Weird microphonics problem
- SJT10/20 preamp tube layout.....and biasing question
- Speaker flub/static
- Taking a Pro Reverb closer to Plexi territory....
- What Eyelets fit 1/8" board? Mouser Link
- Roland JC 55 technical help needed!
- Bias Rite
- need schematic for suitable amp load with line out
- DRRI - dead
- Quick tube replacement help needed...
- Which tube is the culprit?? Fender Deluxe reverb
- Marshall JCM 800 2204 tube question
- How do I test ohms from my amplifier?
- PI Slot - Balanced or No??
- Bias reading
- Fender Bandmaster Reverb Hiss
- Basic Tube Amp Maintenance Book?
- 6V6 glowing blue
- How do you clean grill cloth?
- Loose spinning pots
- Potential Reeves Custom 50 head problem - help!
- Looking for some help with a Fender 63 RI Reverb Tank.
- Blackface Tone Cap Values...Lowdown?
- Name these 6V6's...
- when trying preamp tubes in different positions do I need to turn off the amp?
- Types of tubes for Marshall?
- Update on the Zenith Conversion
- Problems with my Fender DRRI vibrato, any suggestions?
- Cant believe Ive done this..
- Fender Bassman Ohm Help Please
- Blew Out A Filter Cap on 1970 SFDR
- Attenuator Ohm - Related Question
- How big do I cut the hole for a 12" spreaker?
- better volume pot?
- Anyone know where to buy the Fender lamp assembly?
- Where would you start? dull sounding amp
- Please Tell Me What This Means.....
- Light Needed For Amp
- 5C3 Filament connections
- Any Good Magazines?
- 6L6GC bias question...
- Filament Problem
- Triode Pentode Switch
- 7027A bias range?
- Princeton Reverb Issues
- How do you run several amps at the same time
- Repaired cones - any need to replace?
- Are these Tungsram 12AX7A Made in Hungary tubes making my preamp sound dull?
- Late '62 Bassman Question
- Service for a Rivera in NJ
- V2A gain problem on JTM45 build
- Cable extension for DrZ Combo to THD HotPlate
- Tube identification - unmarked Groove Tube
- amp speaker cable
- Question for Tube Guru's... 7189 = EL84?
- I need a dark speaker
- One tube redplating.
- What solder tips do you use most?
- Odd Bassman? Help date?
- supro power fading
- Need help finding Marshall amp parts.
- Bias setting for superlead needed
- Wiring options with 4x12 16ohm speakers?
- Reducing Hum?????
- Do Power Tubes break in?
- lexicon 284 .. recomend me a speaker,.. 10'' 8? 25W??????
- EL34's for a TSL 60
- Kustom Studio V4 Guitaramp schematic request
- Tube source
- Solid State Amp Head Malfunction
- Marshall down...suggestions?
- New tubes=muddy Kingsnake
- Looking for Ideas Re: Modding a Dual Showman Reverb...
- Tube Noise? 1st post!!
- Fender Reverb Transformer-Can they go bad?
- My Silverface Champs has the $hit$
- Crate Powerblock repair...
- 5150 Tubes?
- Fisher "Holland" tubes?
- Elementary Bias Question
- Brain cramp - hooked speaker out of one amp to speaker out of another amp
- Dark preamp tubes
- Amp Tech Advice.
- DB meter
- Solid-state rectifier vs. tube rectifier.
- Newbie Multi-Input Jack Wiring Question
- More headroom out of a 5f8a Twin?
- Effect loop send level
- Reconing stereo speakers?
- New Tung-Sol 12ax7 ?
- Bassman Amp Modder Recommendations
- Need help getting schematic for my 68 Dual Showman
- Kendrick Blackface Conversion???
- Kt77
- The infamous kitVersus the real tweed-
- KT66 to EL34?
- How to disconnect SF Fender Vibrato?
- Bassman OT for Bandmaster Reverb
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