- Would you change these filter caps?
- Problem w/ ceriatone dc 30 mercury OT
- What (capacitor?) to swap to improve Marshall Lead 20 bass response?
- hissing/popping in my old ampeg
- Peavey Delta Blues Tremelo inop, any ideas?
- DeArmond R15 clone build?
- Odd buzz on my AC30
- dual cathode bias 6V6 OT choice
- 1970 Fender Bandmaster Reverb?
- 2061 from hammond ao-35...
- Tube/OHM ratio question...
- New idea for an amp project.
- Effects loop question??
- Speaker troubles... Please help.
- changing electrolytic caps
- Tone stack removal mod in a Fender
- 1971 Marshall 'Artiste' help!
- How to solve tube rattle?
- Sozo Blue WTF?
- princeton rehab
- Mesa Leather Corners
- Repacement Caps For Fender Tweed Amps
- Silvertone 1471 External Speaker
- Help needed with U45b preamp
- Bias Meter on the cheap
- Trainwreck Schematics???
- wire recommendation
- ? about cathode biased amps....
- Vintage Amp Tech in Michigan...
- Reverb Unit making noise?
- How to use the reverb tube and not the reverb
- My Modded 5E3 Clone Layout and Voltages. Input Appreciated!
- PCB valve sockets to chasis conversion?
- Information on replacing reverb cables?
- ID Fender amp circuit + Tech. question
- Tube amp repair in NYC?
- JCM800 2300 RI buzz problem
- Crackling sound from amp
- Marshall JTM30 2x10 Combo Power Tube Question
- Running a tube amp though a power amp......
- So whats the consensus on WGS speakers here?
- Can an Ampeg J20 run 5881 or 6L6G?
- Awesome amp :O !! but i want a new look >_<" !!
- SE OT leads?
- Preferred method for connecting speaker lead?
- Biasing a DR-type amp
- how to measure the gross internal volume of a cabinet
- Having SFSR recapped. Suggestions on "best" caps?
- SE (champ) build questions?
- Field coil speakers
- Tube ID help please - "Made In England" 12AX7/ECC83
- Laydown OT placement A0-35 based 18 watt lite iib
- A Tube Job can be the easiest mod for improving tone and responsiveness
- Fender Twin Noise
- those orange caps...
- White, cloudy preamp tube
- Amp tech wanted for my 64 Vibroverb
- Electrolytics for Silverface Champ
- Earlier breakup needed for My 65 BFDR!
- Swapping some speakers in my '59 Bassman RI
- EL84 question
- Horizontal Input JCM800 Potentiometers
- Help! Need to undo Tech Butchery!
- Marshall plexi reissue help needed...
- matched tubes vs biasing
- Help! - Reverb crackling in my '68 Super Reverb
- Prosonic Hum Fix per Fender Tech Notes??
- Ohm mismatch question
- Power Scaling: enlighten me!
- Undersized choke?
- help-6l6gc and biasing my amp
- 2x12 Parallel Wiring Question
- Loosely built Pro Reverb Clone problem
- KT77: a skinny KT66 and not direct replacement for EL34?
- Priceton clone, trem / bias problem
- Impedence selector wiring
- Cathode follower tone stack
- Phase Inverter plate resistors
- A little help please - Amp/cab impedance question - SF Princeton into 4 ohm cab
- Lets talk tube rectifiers for 6V6 and 6L6 amps
- Princeton Reverb mods (thread renamed)
- New Fender/Fender clone Amp Suggestions
- Help: 68 Deluxe Reverb problem
- Is there such a thing as a consistently good, reliable 6550 around?
- Super 100 JH. plate voltage 515 volts REALLY?
- Help! 18w Lite IIb problem. Power tubes cause dim bulb tester to go bright
- Marshall 4211 Combo Help Needed
- New Lightning build, no sound...yet :)..GOT IT!!
- Help To Repair Pinhole In Speaker Surround
- Wiring Stereo, Mono speaker socket issues
- princeton reverb reverb tank?
- Marin pedal and amp tech (kudos and link)
- Help with amp issue
- Help biasing marshall DSL50
- Crate Vintage Club 60 Treble mod
- Rustling noise when amp is idle
- Filter Cap Board Layout for Blackface Fender (AB 763)
- Microphonic Preamp Tube - Does it matter?
- Crackle, crackle, hummmmHUMMMMMM! (Bad output tube?)
- 5AR4 vs. Two 5V4s in a Matchless C-30
- Tube socket repair
- Amp stuttering at full volume
- Overcooked my Shiva?
- 5881s in a 20 watt Blackbird...wattage boost?
- Strange noise, then no sound...
- Deluxe Reverb Snubber Cap question
- Electronics gurus: what to do about this cap ('66 Vox AC50)?
- Power Section Wiring on Vibro Champ Project
- 1962 Fender Brownface Pro - loss of presence after service
- Bogner Uberschall REV Blue HT fuse
- Did my amp get damaged
- Clone Sorta Fender Pro Reverb advise?
- 50kra or 50ka for intensity pot w/ switch???????
- taming the reverb question, DRRI
- Found the coolest thing today Vintage Tube tester machine (PICS)
- Finding an amp tech?
- Amp with only 4 & 8 tap, But I want 16 too
- Marshall 2204 Pre PI MV to Post PI
- Source of squishy attack??
- Marshall 9005 power amp Help!
- Need more gain for leads - DSL 401
- 70s vibrolux reverb driver question
- Transformer 784-139
- Silver Jubilee vs Black
- Sprague Atoms @ Mouser
- What is this amp worth?
- Super Reverb '68 are there any good mods?
- Does anyone recognize this schematic?
- Switching to lower gain pre-amp tubes...
- Bringing Carling Switches Back from the Dead
- 79 Traynor and Icepickin' - Baxandall Tonestack?
- Preamp Tube Static
- Another tube question... Matching 12AY7's.
- Interesting Super Reverb Mod Idea!
- Fender deluxe reverb filter caps?
- Pots for a '73 Twin
- Peavey XR684 - no fx help
- Fender Vibro Champ Tubes
- Ampeg SVT Classic problem! Cannot get green LED's when Biasing! Help!
- Tubes and Summer Heat
- How do you dispose of old tubes?
- Smoke from my tube amp!!
- help please schemetics/ circuit diagram for soundcraft powerstation 600
- What output transformer for my '74 Fender Vibrolux Reverb?
- matched power tube question
- ohm question, using a single 12 cab with a super ?
- Quick Design Question
- Lucky day! Scored a '65 Vibro Champ for a song! Now what?
- Pull-boost on SF Princeton Reverb
- Power stage troubles...
- Need help finding replacement PST for Duncan 84-40
- Is this the original OP Transformer in my 74' Vibrolux?
- Recommend an amp tech in Orlando/Tampa area(s)
- Darkhorse volume loss- second opinion
- Coupling cap direction
- Mullard 12AX7 I61 I63 questions
- Speaker wiring and OHM rating ????'s
- What would cause distortion in a SS PA Head
- What 10" for a Vibratone cab?
- Proximity of speaker magnet to OT and chassis
- 7591: EH or JJ?
- Mesa Boogie dual rectifier fuse
- 5E3 PT quandry......
- Low-end loss in original '65 Deluxe Reverb
- Modding a 5E3 clone to be able to swap tubes?
- Mullard?
- clean headroom differance if a deluxe has been moded to 6l6 and beffier transformer ?
- Marshall JCM 800 2203/ EL34's...
- Ampeg R212 Reverberocket Overdrive Channel Mods
- Is it possible???
- New JJ 5Y3 Report
- stupid tube swap question... replace 2/3 12ax7s?
- Oval vs Round speakers
- proper procedure to discharge filter caps
- Oddball Speaker ohm matching question
- Superchamp XD took a shit! Fix it or toss it?
- Grid resistor value on power tubes?
- Traynor YBA-2a/b Plate Voltages please
- NFB Switch question on Vibro Champ
- Did I damage my power transformer?
- amp techs: I'm baffled - HRD content
- Double checking. Bandmaster for bass?
- Tung-sol EL34B or Svetlana EL34
- Cracking open Nova Delay's power supply
- Cold biased GT6L6GE to Tung Sol 5881 RI - I know I should bias, but...
- Silvertone + more speaker cabs?
- Can you identify this tube? Help!
- Calling Night Train owners,noisy master volume issue
- Marshall 1974x - transformer failure going on?
- AC15HW Freaks out when playing A# on the low E string!?
- disc cap identification
- another hum/buzz issue...
- UK Mullard ECC83 - What do I have?
- Age old question......which EF86 NOS is most recommended
- Running a 8 ohm tap into a 16 ohm cab - what happens?
- Hum in a common cathode output amplifier and a question...
- carvin X100B bias issues
- Zenith 5B23 conversion to an 18watt Plexi
- Gibson GA-8 tube complement?
- Amp crackle sound... Help!
- BF Bandmaster OT
- Versatile Speaker for a 1X12 CAB
- Trying to identify this 12AX7 tube
- In Praise of Winged C's
- Crema Wheat
- Please Help Me Understand: Bias
- recapping my deluxe reverb
- tube substitution
- Can I Use a Bias tool purchased for 6L6 tubes with EL34s?
- Super Reverb white noise
- New tubes climbing
- If i was going to design a ported enclosure...
- Vintage Ac30 Feeling bland and one diminsional.
- Mesa Boogie Mark IV lead channel problem
- 7027a for a Sovtek 5881?
- Do 6v6 tubes get brighter as the volume is raised?
- Epi valve jr. 110v primaries!
- Do rectifier tubes burn bright ?
- Is there a 4 way switch for preamp cathode bias cap switching?
- Dialing in a Dumble clone?
- Need help with Blues Jr. problem
- Getting into the tube amp game as a tech
- vintage vs modern iron
- Pro Reverb clone output calculations
- Help identify this footswitch!
- QSC 2000 Problem, I think
- Biasing a Fender 5E5 Clone
- Where can I buy burr brown op amps?
- Orange Rockerverb Reverb, 12AT7's & Microphonics?
- Can anyone ID these tubes?
- Leslie Speed
- /13 RSA31 Tube Issue
- Brown Deluxe faceplate
- muffled champ build questions
- Crate Vintage Club 60 problems
- Bent Power Transformer Tabs - what to do?
- This light-bulb-in-series-with-amp technique . . .
- Speaker magnet too close to transformer?
- Fender Silverface Champ external speaker questions
- Would a PPI MV sound good on a BF Bassman?
- Ampeg V6-B rectifier question
- My Marshall (re)build: volume fluctuation
- My amp is talking!
- Weber 6v30 biasing
- randall rm mods
- What 12AX7 is this one?
- '79 Marshall jmp 2203 PV @ 516V.. should I be concerned?
- What is wrong with this picture?
- Field-coil lesson
- Low wall voltages