- Tube covers in fender amps?
- How to measure the in/out impedances for reverb line?
- how to connect a 240V hammond transformer???
- Dumb question... Whats the danger in installing tubes and not rebiasing?
- I need Schoolin', re FilterCap Discharge & MM
- Software Signal Generator & Oscilloscope; any good?
- who knows the Mesa OT color code?
- Phillips EF86 real or Fugazi?
- RFT EF86 or is it
- Hissing sound from a Fender Twin
- Tube Dampers--- Why?
- Comments on Fender amps, "Pete Anderson"
- How tough is it to build a new efx loop for an amp?
- Can I Use a Different 12A?7 For a P.I.?
- popping sound on my high powered twin, true bypass pedals only
- 100 OT 50 watt PT
- What is a going rate for Kalamazoo Model1 cap job?
- switching a leslie on and off using ac current
- 1969 Fender Silverface Blackline Bandmaster-What Circuit?
- Need help finding some parts for a Concert II 80s
- help with a DRRI Reverb
- princeton reverb woes
- Power tube life
- '72 or '73 Bandmaster Reverb
- wet/splatty distortion overtone from my new Bruno...
- Problems with Fender Hot Rod Deluxe
- What Should I Get Done - '73 Traynor YGL-3 Mark 3
- Question to Change 2-3 prong plug on 68-69 Gibson Duo Medalist
- Help identifying these EL34s??
- Building a "Brown Box"???
- LED for Reverb/Tremolo Footswitch on Deluxe Reverb?
- Caps in AB165
- filter choke option
- Amp Cabinet Swap
- Correct Fuse for Fender 67 SF Deluxe Reverb
- looking for a project...
- 1974 marshall 1959 power transformer
- Is a 30ohm load safe for my amp?
- Broken Mesa Mark 3, Please help!
- fender super reverb not working.
- Anybody put a Master volume on a plexi Marshall?
- Can any one tell me why? (Fender PA 100)
- ab/y hum between amps
- Stage gain and clipping levels in tube amps
- Ampeg J-20 handwired . .bias ?
- Rack gear for dummies!!! Please Help!!
- Torn speaker cone repair?
- Adjusting Trem Depth in Princeton Reverb Build
- What amp to build using 6BQ5 tubes
- Tubes, do they have to be vertical?
- Prolonging the life of vintage transformers?
- Ooooohms My God!!!!!
- DRRI distorting.
- Midi channel switching
- rectifier???????????????caps???????????
- Super Lead / Hotplate / Cab Question?
- Fender dual showman Jump the channels?
- Pulling a preamp tube in a Dual Showman
- Output bias shift under overdrive?
- MM HD130-212 12ax7 ?
- I want to make my marshall-esque amp a bit more Fenderish
- Peavey classic 30 effects loop problem
- If I wanted to learn how to build an amp, which books/resources?
- Channel switching problems
- Need a little advice installing new baffle in SF Deluxe
- Diagnosing a sick amp....
- speaker wire with 1/4 plug and female terminal
- blackface tremolo optocoupler question
- Amp Gurus-Circuit board placement
- Theoretical Q about a short circuit on a PCB.
- Clipping the 'Brite Cap'?
- Vibro Champ Bias Resistor
- wiring speakers in a vintage ac30 help please
- quick PA questions!
- REPOST: strange sound from bass amp
- Did I get stiffed on my new EL34 matched quads?
- Stripped Blues Jr.........Plexi
- Ampeg j 20 problems...
- 6L6 to EL34
- 66 Vibrolux Reverb - Rectifiers
- Help: Heritage Briton's Fading
- Rivera Fender 'Concert II' blowing fuses.
- Punctured Speaker
- Coax-where and how?
- 2 6L6 Se
- Help with hot rod deville break down please!
- EL-34 1987x to cathode bias?
- Music Man control grid voltage ?
- Blues Deville distortion thoughts??
- triode/pentode switch for vibro-king?
- How loud to overdrive an SM57 ?
- yellow jackets or attenuator
- Reverb not working on Bandmaster Reverb
- Calling all Ampeg J 20 owners
- JCM800: Soft crackling sound in background when playing on lower strings
- tweed champ rattle
- coupling caps, tweed champ, less bass?
- Reversing the LED in my footswitch
- Anybody have a pic of a Fender Concert IIs input jack wiring?
- Matching speaker watts/ohms.
- Fast amps slow amps
- Getting parts for Machless Spitfire clone.
- Help! Amplifier noise question. Squeal, oscillation, ???
- Do tubes still warm up in standby mode?
- Would it be possible to build a speaker that....
- Peavey Rockmaster dull?
- Bad rectifier tube?
- Speaker Connection Question
- Bassman 50, unusual power cord mod?
- Help a Noob. Can't find a part on Mouser...
- amp teck help needed!!!!!
- Another Alchemist thread (bias check)
- Another grid-to-ground tone robbing cap? (A1270)
- Reducing transformer hum - some questions
- Clicking/ticking noise w/ Tremolo on my Ampeg Gemini G-12
- turn bright switch into tonestack disconnect on Fender amps
- Fender Deluxe Reverb RI Mods?
- Val-trem restoration project
- MTS3212 Repair?
- Acoustic into an electric guitar amp
- The Deluxe Reverb as a Toaster Oven...
- Wood Circuit Board ??
- PI tube, distortion and perceived loudness
- Johnny c the boneshakers
- Vibro Champ Bias / Speaker
- Tweed Amp Help
- Fender Super 60 pots replacement
- Well I have been offically sucked into this fourm
- Turning up the preamp volume: what's distorting?
- Matchless DC-30 12ax7 channel
- Ground loop problems..
- draining caps on a 1965 bandmaster
- 8 ohm VS 16 ohm
- Testing Tubes?
- Best/Fav P/P Design for Mesa Subway Donor
- "fuzz/buzz" overtone on clean channel
- Multimeter experts-Biasing a Super Champ XD scxd-need help
- Hammond PT & OT recommendation for 5e3 home build?
- Ohms help for a power amp please!
- Bias help on new PRS Sweet 16
- Really dumb amp repair noob question
- Power tubes Matched duet but different make - is it safe?
- Matchless DC30 schematics available
- Mullard Batch Numbers ?
- Fender Blues Junior reverb issue?
- Why would a 12AY7 cause my head to get really hot?
- Buying NOS tubes from ebay.
- negative feedback
- Bumbox Lead One
- Leslie 122 speaker problem
- Matched Ruby's V's Unmatched Mullards Originals
- JCM 800: Strange sound - where to look for problems?
- speaker ohm question
- Class D amps?
- Fender Custom Vibrolux Reverb..Noisy!
- Traynor Bias
- rectifier tubes
- victoria victoriette tube choice
- "clear" amp chassis
- Tweed Champ OT Swap
- What does the "V" mean when used with tubes?
- Champ II output transformer swap?
- tuning a speaker cab
- Brown Gunk on stock Mesa EL-84s, what is it?
- DRRI sounding thin and brittle after couple of hours playing
- Another Boogie Bias Question
- Question to all "Fender Super 60" owners !!!
- Change preamp tubes with amp on?
- What happens when I… (two questions)
- Tubes for my Super Champ???
- help with a fender showman
- Help troubleshooting noise in Super Reverb
- Converting a 5E7 to EL34s
- characteristics of 5881 tubes.
- Need help understanding & tweaking 5F4 tonestack
- Redplating Tube--Bad tube?
- Attention Schematic Readers...
- Soldering to traces
- what affect does voltage/electricity have on amp sound?
- TGPers first choice to buy tube son line...
- Retubing the Bogner Alchemist
- '65 or '66 Super Reverb
- capacitor choices
- another capacitor question
- Music Man Bias Findings .
- Capcitor discharge on its own?
- Bias Probe for EL84's?
- Upgrading Tranformers
- background noise in Mesa DC-3 - help needed!
- Oversized Capacitors
- Ted Weber has passed on
- Hum issue.
- amp problem; clean channel sounds distorted
- New book on amplifier design and construction
- victoria Victoriette set up
- Just picked up a Sonotone 6aq5 on e-bay
- 6L6s to 6550s, will output impedance change?
- How to remove Bandmaster Reverb Pilot light nut?
- Impedence Mismatch question
- Just blew up something in my SF vibrolux reverb
- How to figure bias for my amp
- What is typical plate voltage on a SF Pro reverb??
- Ampeg VT-60 bias issue.
- any way to tell what model fender amp....?
- Idea-- Faraday cage around PT?
- Cap can replacement
- Help - went to a "tech" with my Bassman.
- footswitch wiring help?//
- Prosonic - Hum. Help.
- Heater wiring question
- Do Transformers Really Sound That Different?
- My amp is rated at 16 ohms my cab is 8
- Marshall JCM 2000 DSL - Channel "A" Barely audible? - HELP
- speaker switch
- Vintage Gibson GA-40
- 12AT7 instead of 12AY7 in Tweed Deluxe?
- sjb hornet
- What Brand of Filter Caps Are These?
- Who makes Victoria's transformers?
- Biasing a Silvertone 1484
- Fender DRRI: Reverb Decay is Unusually Long
- KT66 vs. 6L6
- weird Polytone problem ?
- My Beloved Weller WTCPL ....
- I want to Upgrade my Output Transformer - suggestions please.
- red plating el84
- Modded Blues Junior has no output
- Capacitance Meter Recommendation
- Filter Cap Question
- Why no Stand-by switch?
- Tweed 5E5-A (5F4) Screen Grids
- How hard is it to rebuild an effects loop for an amp?
- Twin Reverb - Odd Sound
- Do all 50 watt Class A/B amps have the same amount of clean headroom?
- Swooshing Standby Switch Help
- Strange 5E3 amp static?
- removing the polarity switch
- Please give me the crash course on a Variac
- Serial FX loop switchable signal attenuator
- Mods to bump a SF Champ up to 10W?
- '52 Gibson GA-40 Bias Setting Help - Hi Res Pics
- JTM45 experts, I need your help!
- Broken Tube Key and related issues
- Impedance selector switch rating
- OT into Short
- Best Transformers for Brown Deluxe 6g3
- Debugging Danelectro reverb
- Any insight into SkipZ power Scaling?
- Pulling two tubes from a Twin Reverb?
- Using two output transformers together