- Help! DIY amp build dead end...
- Question about voltage measurement
- Shorted out a Sylvania 6ca7, do I need a whole new quad?
- Second Mastervolum - is it possible to build?
- Mesa Single rectifier - reverb poor
- Tube testing in the Dallas area?
- Why are spectral plots usually amplitude only?
- Hammond 125E OT in PRRI? Improvement?
- Weird Pulsing
- Putting a 12at7 in V2 of a 5E3 . . . what to expect?
- runaway bias problem
- Fender tube ?
- Music Man HD-130 Re-tube Help/Questions
- Class A and A/B what is the difference
- KT66's in a Peavey VTM60
- Slowing down the Tremolo on a 75' Vibrolux Reverb.....
- 9 pin tube socket connection issues.
- Tubes and OT Load Impedance Matching
- Reverb tubes
- Mesa Recto screen resistors underrated?
- Anyone have any tips on piping a cabinet?
- Bogner Shiva Question
- 5U4G rectifier tube for a MB Mark V question
- How different is a tweed twin from a JTM-50?
- 4ohm to an 8ohm attenuator: Trouble?
- Stereo / mono wiring of my 2x12
- I know it has no tubes, but...
- Having an odd hum issue with a 5150 head
- Suggest a "primer" on tubes?
- Tube amp + strange clicking noise?
- Best new production EL 84's?
- Crate Powerblock repair...a little help???
- DUMB Bogner Fish question for fellow owners/or an expert.
- Problems with a Peavey Classic 20
- 6V6 single ender question
- Problem with Blackstar HT-5
- 4x12 wiring??
- Did Princeton NRs change in the late '70s like Princeton Reverbs did?
- SOVTEK MIG 100 Questions
- SVT-II Gets Warm, Fades, Static Clings
- Wiring 2 pairs of speakers at different ohms
- Am I due a retube? If so, do I need to do a FULL retube?
- How to wire a half-power resistor on El-84's??
- Soldering Skills suck any tips?
- Completion of amp project with pics.
- Metro Amps loop in JCM 800
- And now... What kind of tubes should I try?
- Changing tubes need some info
- I got a glowing tube spacer question.
- LarMar MV?
- install 3 prong plug in vibro champ?
- Changed tubes = new problem
- 5879 tube in place of an EF86
- Power Transformer Temperature?
- Finally a good surplus store in Chicago Burbs.
- Anyone tried a different tube in place of an EF86?
- Bias-rite or..?
- Running AC to Phase Inverter (in a Fargen Blackbird)
- Clearing congested Multivox Premier 120 (5E3)
- Help a tube noob. Palomino V32 problem.
- pots
- Stupid mistake, speaker load mismatch...
- speaker problem please help
- JTM board, tranny's w/JMP component parts okay?
- '73 Super Reverb: Smoke from the preamp section
- Can I substitute a Mica for a Tantalum on a PC Board amp?
- Vintage modern help
- Blackheart Handsome Devil 15 schematic
- Powering BK Butler Real Tube Reverb
- Cleaning speaker jack corrosion safely
- 65 Twin RI w/ bad blocking distortion. Ideas?
- Tiny and efficient speakers for practice amp?
- tube ID....
- Help diagnosing Amp Hum
- Tube power question
- Video of hum noise when I switch on the reverb of my Twin Amp
- where can I get a 2 way, mono speaker jack plate
- Crate Vintage Club 50, Input Jack Issues?
- beginer doubt
- Biasing JJ 6V6's ??
- Anyone coverted a AC30CC2 to a solid-state rectifier??
- Emory Smith Master volume
- Fender PA 100 mods and cab wiring?
- To much Hum
- Sick Amp! Need a diagnosis.
- Turn bass up and volume goes down
- 6v6's in an orange rocker 30... Impossible?
- SVT 2, Need all 6 6550's to function?
- Help. Is this A 1968 Plexi?
- My poor TRRI's power tran, how can I ease it's pain?
- Tubes tubes tubes!
- Speaker ohms
- Matchless Chieftain clone
- Crap. Which speaker wire is the positive.
- Why do I like silverface fenders better?
- Hiwatt DR103 Noise
- Vox AC30 TB Reverb limited edition.... info needed
- Music Man RD50 plate voltage
- Unbelievable hum level at gig - cause and solution??
- Marshall Artist 3203
- amp theory question
- Oscilloscopes
- fender hot rod deville service
- Power Tube Question
- crate v33 head
- Latching type channel select for a Fender Concert (II) mod question
- Peavey Roadmaster Power Problem
- Is the tip of a 1/4" speaker cable (+)??
- Fender Silverface Princeton Reverb Tubes
- 5e3 Builders
- Crazy Bad Cat sounds tonight.....Fixed....Back....Fixed...revisted
- change circuit to put reverb after trem... Possible?
- Speaker T Nuts not properly spaced
- What other amp coverings have you used?
- How easy is it to drill a chassis blank??
- hissing noise from vibrochamp
- I'm pondering a preamp build. Schematic wanted
- Super Reverb. Disconnect normal channel??
- tube match question
- PRRI Allen T020 Install pics & notes
- Impedance selector for 2x12 cab
- Adding a relay switch between pots in the feedback loop
- Orange Rocker 30 trouble
- Mod phono input for insrument
- I think my Vibro Champ is a '68...Pics inside, hoping to get info
- Mixing Two Different Power Tubes
- Amp Techs in CT or NYC
- reverb wire routing
- Replacing a broken 3-prong power cord on a Fender
- EF86 vs. E80F
- Germino Club 40 question
- 6l6 tubes Soft,medium,hard?
- Rewiring my 8 ohm avatar g212 to 16ohm
- Installing Effects Loop in a Sovtek Mig50H (midget head)...
- Help Identify This Jensen Speaker Please
- Another amp buzz question
- Voodoo V-plex 50 watt bias
- Need help with Vibro Champ
- Traynor YBA-1 Mods....anyone?
- Tonestack mods for JCM 800.....
- Vibrolux reverb tubes?
- Amp turns on but no sound
- Tube tester: What is a Hickok 539C worth?
- Problem with a JCM 800
- Amp buzzing noise for 5 minutes when turned on?
- Output transformer mounted to speaker
- Questions - Lowering Preamp Gain
- Front loaded Speakers
- Which reverb tank for a '68 Princeton Reverb?
- Difference In Kt-66 Kt-77 and Kt-88's PLEASE HELP!!
- 6V6 to 6L6 Speaker Question
- Where did the Muddy Traynor thread go?
- How do you use a variac to break in a speaker?
- 8 ohms 1x12 to 16 ohms?
- 70's Vibrolux blowing fuses
- Mesa Lonestar problem
- Can somebody check my wiring please? Soul Control - '66 Super Reverb
- Sprague Orange Drops vs Sozo Mustard....
- Fixing a broken back-panel screw.
- series-or-parallel box
- Amp makes "pop" intermittently
- power tube burn-in time for NOS tubes in ac30?
- eminence fluxtone speaker
- Changing speaker in a ported cab?
- Putting EL34 in JTM-45
- Brown Deluxe Problems
- Isolating channel on Fender PA100 Rev.
- Flashing Power Tube In PRRI
- Amp output vs. Speaker rating = ?
- Plate dissapation oddity or normal?
- Symptoms of a bad Transformer?
- Weber Z-Matcher Question?
- Bias probes and tune-ups...
- Traynor YCS100H2 & midi control...
- parasitic oscillations and Oscilloscope...
- Deluxe Reverb Power Transformer I.D. Question
- Bias and plate voltage measurements....
- V30s, Pics inside: is one pair UK and one chinese?
- Footswitch Search
- SVT Question
- Vox Ac4th Head Buzzing like crazy.
- mullard el34 xf2
- Point to Point vs Circuit Board
- Whooshing noise from my Blackheart combo
- Ampeg "faceplate" cleaning
- Uneven Bias mA
- Help with 18 watt TMB!!
- Ratty distortion on 70 Deluxe Reverb
- speaker wire
- Plate Voltage Mismatch
- Need Help!!! Channel and Crunch buttons won't work!!!
- 6V6 in Rectifier?
- Can I use this switch on my cab?
- Does fluorescent lighting affect tube amps?
- 6550 to EL34 question
- vox night train tone stack?
- EL84 Plate Voltage
- Capacitor guidance
- Mercury Magnetics are Cool!
- Best new productuion power tubes?
- super reverb speakers
- question about leaky caps.
- Turret Lugs.
- '67 Ampeg Reverberocket II gutshots
- Speaker with a pushed in dust cap - a problem?
- pre-amp tube positions?
- Rebuilding a footswitch - Diezel Content
- Suggested upgrades for a Weber 5f4 Tweed Super kit?
- Victoria Regal II Power Tube Question
- Traynor YBA-2 project?
- Fender PRRI voltage conversion
- Super Champ Bias/Plate Voltage Question
- Learnig to use a Digital Multimeter for Amp repair.
- Step-down Transformer question
- Motorola 12AX7
- Marshall "treble peaking circuit" mod
- Best 5E3 Mods
- Super Reverb clean headroom?
- Pulled the trigger on a SF Deluxe that was supposedly "Blackfaced"- how do I know?
- Amp Poweramp & Preamp Tubes Question
- new amp dead on the first day
- Tube effects loop questions
- Amp breakup gets harsher after a couple hours.
- The opposite of crossover distortion...
- NOS Jan Philips 6L6WGB's-Bias
- removing tremelo tube?
- Mesa Mark III....low volume no gain? WTF??
- Power transformer - does this make sense?
- Question about 500pF cap in AB763 circuit
- Using Line 6 Spider valve MKII preout/pwrIN as looper with VOX tonelab le
- Magnetic Components Classic Transformers
- No earthing contacts = hum?
- Matchless lighting build ?
- Have you ever seen "flakes" like this inside of a tube?
- Speaker break in question
- unlabeled speaker out?
- Why Doesn't HumX Work to Quiet My Amp?
- Noisy amp??
- Look What the Amp Tech Did to My '61 Blonde Bassman >:(
- Peavey Prowler Schematic?
- Recapping a brown Concert
- Vibro Champ XD Question
- input capacitor value question
- GZ34- dual getter vs. single getter
- buncha Fender PRRI questions
- What's the word on ARS caps in Marshalls?
- Tube Gurus - Help!
- How about a schematic depot section on the site?
- Adding switchable tube rectifier???
- What damage could be done if impedance switch mismatched?