View Full Version : Amp Technical Info
- Speaker stud went thru my new Weber Speaker!
- Assesing the damage; OT related.
- Ampeg Mercury: 6SL7 PI hum help needed
- Reverb not working!
- My Weekend Project:
- Vintage Ampeg Reverberocket Reverb=Gain?
- vintage tube amp restoration is complete
- Fender Twin Tremolo not working
- Valve bias
- How to measure current draw on a cathode biased amp?
- Fender Company : why switched to silverface from blackface, and why so long ?
- Building an AC15 Clone
- Help with dying amp
- Can an el84 amp run 6v6s with tweaks?
- Best current production replacement 6L6GC??
- Master Volume Modification? want rid..
- Noisy JCM800 help?
- Bigger Tannies + 6l6 in a Tweed Deluxe build...?
- JBL Speaker Polarity Question
- Help with a Marshall 1987x
- Need help with buying the right pots for '83 jcm 800 (john phillips?)
- 134 prefix potentiometers
- Negative Feedback Question
- Need help with changing a tube.
- Boogie reverb driver
- DC filliment with separate transformer, ground reference?
- Is My Marshall 1974x Cathode Biased?
- 2x12 mono/stereo wiring - help...
- EH tubes -- junk ?
- anything I can use a 30w tube preamp for?
- Where to find NOS 6EU7s
- John Phillips-JCM 800?
- JJ ECC83S Vs. EH 12ax7
- Preamp Valve Question
- Diagnose a Crackle (Marshall/Traynor Content)
- Weber Amp Kits
- Show me your dummy load
- Help! My Vibrolux Reverb is crackling!
- Bass and Mid Freq drop on JCM900
- Making sense of New Sensor Corp.
- SFTR - Any Mods for Better Jazz Tone?
- Changes in power filtering on JCM800 in late 80s
- JP: Save me again, help.
- Maestro Rover amp repair
- Need Help Locating a Schematic
- Help with Transformer Voltage Drop Method
- Question about Impedance
- Where do you guys get tubes?
- Can you diagnose this squeal for me (5e3 build)
- Building Cabinets
- Thanks Gang
- Look at this picture can you help?? Pre amp question
- Fender SuperSonic schematic
- Vibro Champ mod ?
- does any company make a 12" field coil speaker..
- Cab Building: What wood supplier?
- Help diagnose this problem please?
- tube tester
- tube amp wiring videos
- Cabinets/tone
- Tightening the bass on a DRRI
- Cab wiring questions
- Schematic or help with rack V-Twin
- 5Y3GT rattle!!!!
- Potential issue??
- SFSR bias resistor
- Loose Pin / Tube Socket Prob, Pics
- Voltages at 1/4" control jacks on Dual Rec?
- SF Princeton NR
- Want to build a Victoria 5112 5F1
- My amp hates buffers - why?
- cab wiring assistance
- Another weird hum issue
- Dr. Z labeled components??
- Heater wiring question
- vintage fender need help
- Another hum debugging question
- Deathcap X2
- What order to put Quad E34L's in my dual rec.
- Cooling fan noise
- Ice Pick Root Cause?
- Teflon wire with solid core -who sells LT Roll QTYs ?
- Circuit questions
- HEXFRED -No Problem?
- Princeton Reverb screen resistors
- Can ayone tell me how to add an LED to a footswitch?
- Radio Interference?
- Silvertone 1391 Project
- Tube Life: 6V6's, 12AT7's
- Advice on recapping traynor YGM3
- If you ran an amp with blistered filter caps, how long can it go before....
- ANyone ever built a Weber (KIT) 6A14HP amplifier
- Power tube matching question
- I have a tube ID question
- 1/4 " speaker jack polarity question
- what temperature to use w/ soldering station?
- Class A Cathode & Class AB Bias Mod
- pi/phase inverter?? v1?? help!......
- Type of output transformer to use.
- Bassy hum from amp, even when no guitar connected
- Bigger Output Tranny In any amp?
- Amp startup problem - Crate VC508
- The effect (if any,) of using overrated coupling caps.
- Is 4 ohms louder than 16 ohms?
- Tubes... Check. Bias probe... Check... now WTF do I do?
- '62 Bassman speaker output question
- Rattling Handle
- In a orig AC15 circuit nothing beats a EF86 but
- Variac for voltage regulation
- negative tip .jpg
- Why are better transformers better?
- South Bay Fender amp tech needed
- amp rattle
- What components should go into a Tweed Build?
- When did wall voltage change?
- Batman on my plates
- Maybe you can help me diagnose this amp problem
- Help reading a schematic for a pre-amp wiring
- Converting a Marshall to earlier specs.
- glue for EVM12l speaker
- tung-sol tube question
- Fargen MiniPlex "Decade Switch" tech?
- 6CG7 tube question
- Weird sound coming out of my amp. Radio signal?
- Need help with A/B box vs. tweed Deluve
- Gibson Skylark Ga-5t
- Tung-Sol 12ax7 bottle size bigger
- Which Loop Kit Would You Buy?
- 12ax7 tube issue Faulty or weak tube maybe???
- updated marshall jcm 800 amp help thread
- '66 Super Reverb Clipping Issue
- Mesa LSS popping when switching channels
- 22n = pico or nano ?????
- where to get good R's and C's
- Splawn amp bias query
- '72 Marshall 50w Bass Plate Voltage
- 1966 Fender Pro Reverb Recap job ??
- Eliminating Amp Background Noise
- DIY variac/line browner
- Super Champ Power Tube Bias
- abc-y usage hazards? amp damage?
- Rectifier tube touches tolex, is it safe?
- Biasing mishap story!
- Are 6V6 smoother sounding than EL34 tubes?
- JBL D130F Speaker Recone
- Allen Old Flamers: Help with a retube
- 69' Marshall Metal Panel Bias Issues
- Hakko 936
- Need help with reverb tank
- overdrive box grounding schemes
- Marshall Plexi Style Kits
- DRRI speaker extension jack question
- does this look good to any of you?
- Wiring help needed to reduce RFI noise.
- Mutual Conductance
- Solid state replacement for vacuum tube rectifier...
- RV50 Reverb sounds off...
- Are these tubes too unmatched to use?
- Pictures of my 5e3 build head
- Troubleshooting question
- tube substitution question 6v6gt, el84
- Cross-Post/shout out to John Phillips
- NooB amp-tech-circuit questions - ongoing...
- amp noise when turning on or off, with clip
- On icepicks and old Gibsons
- Reverb doesn't work -- help.
- Where to buy Fender Reverb RCA RA cables
- Does anyone make repro and/or custom amp logos?
- really noob questions - where to learn
- Class A Amps - Harder On Tubes ?
- things to practice soldering with?
- Bad rectifier tube in a Deluxe reverb?
- Removing and reinstalling grillcloth
- Using a 1x12 and a 2x12 at the same time
- mismatching speakers in Super Reverb
- A friend hooked up my BMR yo cab with guitar cable...what to do?
- Shiva Problem
- Everyone's Favorite Game-Name That Tube!
- Help! Broke the treble knob on my AC-15!
- KT-66 tubes in Ultralinear Fenders?
- push-pull vs. single-ended overdrive?
- Very faint chimey sound from speaker?
- DRRI reverb problem
- Help Me Fix Fender Vibrato in AB763 Deluxe Reverb
- Spiff up a Weber 6a40 (parts upgrades)
- Touch sensitive? Oh yeah...
- Bendix 5992 vs. RCA
- Which Power Tube/Rectifier Combo
- Tampa area Amp Tech
- Question about Vintage Fender Mod
- 2 amps- same hum problem
- "Mids" on an amp with no Mid knob?
- Super Reverb > 2x12 cab
- Need to replace a 6n1p - best online source?
- 3-Prong Power Cord Installation Questions
- Microphonic JJ el84 in vintage Traynor YBA-2B
- Can someone ID this 6N14N (EL84)?
- Could someone explain this to me please?
- help! (mesa/boogie content)
- EL84 in Vibro Champ
- CeriaTone FX loop question
- Fuzzy VibroSonic
- Amp just cuts out....
- Misc. Tube Values
- Classic 50 Input Jacks
- Tube Experts - Are these Amperex?
- Electrolytic Caps Question
- GT6l6 Black plate - Failure rate?
- Bought some new RFTs
- NOS Pre tubes need to break-in?
- Mullard 12AX7 questions
- Why did Leo go with 3.2 ohm speakers?
- capacitor dissipation pictures
- Traynor YBA1-A ?'s
- Input jack noise - total volume loss???
- what cap should i get for my jcm 800?
- '65 Bassman snap/crackle for fist 10mins
- where can I get a replacement faceplate for my Fender?
- Tube rattling?
- Question about Ooooold Fluke meters
- 6A5Q vs. 6A5QA
- Mystery hum in '67 Deluxe Reverb re-build
- Am I OK running a 4 ohm PA into 8 Ohm speakers?
- Amp building question, Power Transformer related.
- Stancor transformer specifications identification ?
- Please Explain The Principle
- Repeated Tube Problems with EL34 in H&K Combo
- power scaling kits
- pro output tranny
- OT: tube powered musical tesla coil?
- Mesa Slave Out
- Matched quads - how far out should they be?
- Amps Effect Loop Problem
- Switching a cab for series/parallel/stereo
- 70uf Filter caps in series?
- Victoria 12" champ meltdown
- Honest, reliable, knowlegable Amp Tech needed Chicago JCM 800
- Eurotubes' 6V6 option for Blues Deluxe Reissue
- Output Tranny ?
- PA Mains Dispersion / Coverage question
- Rewiring SR speakers
- Amp dying when hot! Help!
- Fender Champ owners....no distortion?
- Worth replacing the speaker in a crappy practice amp?
- BF Super Reverb hiss...
- Questions on Mission Amps 5E3 kit options...
- changing a baffle....
- Peavey Delta Blues - Fixed Bias question
- Troubleshooting a 78 Super Reverb
- Roland KC500
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