- Marshall Preamp Question: Which valve has the most impact on tone?
- quick jack wiring question
- Powering an LED with a 9V battery???
- Amp Techs Columbus Ohio Area
- Fender Super Reverb... New Tubes?
- 6L6 to EL34 & vice versa
- Annoying Noise with Mesa/Boogie LoneStar Special
- Cokebottle 6L6G versus the Bandmaster and Vibro Champ
- desoldering a mic pre transformer: HELP!
- 6L6/5881's that will take 500+ V?
- 6V6's in JTM45/Bluesbreaker???
- Question on mis match speaker ohms
- Can you change a Peavey Classic 30 to a Classic 15?
- Anybody like ceramic caps? I might
- heyboer 50 w ot tranny- how long...
- Cathode follower?
- DRRI's fake ground switch...modded for bias adjustment knob??
- Cathode Bias = No Biasing Needed?
- Are Spring Reverbs Typically Noisy?
- Why does my SFDR sound like I'm using a sitar?
- 6L6 to 6V6?
- Channel Jumpering a 4-input Marshall Plexi
- Oh $&*@!, did i just kill my Marshall?
- rectifier tube question
- Bassman 6v6
- Bias Question
- Mesa Nomad 55 Channel 3 not working?
- Help Needed for 76 Pro Reverb
- Dumb novice question
- 5V4 in a Princeton?
- Vibro Champ Reverb
- Which power tranny for 71 Princeton
- Reverb problem with a mid 70's Traynor, need some advice
- Using a breadboard
- 1980 Fender DR question...
- the beauty of Mullards
- Ohms/Wattage question... need help!!!!
- look what sozo capacitors came out with,very cool..
- Carling DPDT switches 641-series
- Favorite 6L6 for Super Reverb/earlier break up
- Princeton reverb problem
- Looking into rectifier tubes that will run on 6.3 volts...
- Hot Rod Deluxe Issue
- 5E OT Question
- 220uf 300v Filter Cap Sizzle, replace ?
- Bassman 6G6-A Trouble...
- Orange Rocker 30 head tubes
- channel jumping with a tubescreamer
- How long do you folks get out of current production 12ax7's?
- Carr rambler issues, help please,
- Tubing a Deluxe Reverb
- (1982) JCM800 Bass Series (Inf/help Pls)
- Supply sag
- Weird happenings with my amp at practice last night?
- Can anyone recommend a good DIGITAL Multi Meter?
- Cabinet impedance
- Non-working amp - shop visit or Ebay?
- How to calculate -3dB point of PI-caps
- DC Filaments
- Anyone Put NOS EL84's in their Crate V18?
- Shock question - SF Fender
- Gibson Goldtone GA-15 not making sound
- What Is This Fender Cab Good For?
- Vox ac15 heritage - new tubes - re-bias???
- My amp is dead... help?!
- Are 1n4995 diodes ok for fender twin?
- Tremoverb hums in standby mode
- Can I put 6V6's in my Super Lead?
- What Dictates Power Tube Options?
- Daddy's Junky Music for amp repair?
- early 67 45/100 w/el34s, 119 OT, 43PT, aluminuim chassis
- Help me with Ohms
- Okay to use WGB 6L6's in TRRI ???
- Okay to use WGB JAN Philips 6L6's in TRRI ???
- How does one get Tone out of a Sovtek 5881 (6PI33C)
- Speaker dust
- Super Reverb circuit
- Questions About Hi-Gain Design Theory
- Question about wiring multi tap OT
- Bias Tool and Blowing Fuses
- ghost note question
- tech in CT?
- Can someone help diagnose a amp/tube issue?
- What are the basic component of a guitar amp.
- Clipping the Bright Cap - what's it mean?
- Problem with Fender Hot Rod Deluxe
- My little Vox died.
- advice on changing bass channel (ab165) to marshall 2204?
- plexi experts: 1987 vs 1986
- to change PI tube when changing Power Tubes?
- So, if I disconnect the negative feedback loop...
- Weird bass overtone/feedback
- Serious power tube problem with my Fender hot rod deluxe.
- lack of standby switches on high-end SS rectified amps?
- Super Reverb Issues
- super reverb reissue problem
- Help with tubes!
- Safe ma Range on a Matched Set?
- roland micro cube into a valve jr?
- 100 watt head into a 50 watt 1x10 speaker?
- Tools / Process for Rebiasing DRRI
- Can anyone tell me what kind of amp this is?
- 125DSE and 269EX transformer set lying around
- "Life Test" on Used Tubes
- Amp repair shop...necessary tools?
- What speakers are these?
- Laney ProTube AOR extremely farty on low end..HALP!
- Is there a proper way to ground out a solid state before servicing
- Which tube is my tremolo tube? diagram included
- Does this amp ever need biasing? Diagram included.
- Princeton Reverb Reissue circuit?
- Need a bit of direction...
- 7591 info?
- Vox AC15CC - Higher current mains fuse?
- what resistor do you add to stop "ticking" on tremolo FX fender amps
- Mesa Express 5:50 112 rattle at high master vol settings
- Help! Problem with amp!
- It's time for new tubes when....
- Using 400v cap instead 600v ... repercussions?
- Can someone explain, in dummy terms, what effect a 12AX7 has on the tonestack?
- What are the symptoms of an amp needing a cap job?
- 1971 Super Reverb technical journey...
- Biasing an Orange or80m
- Help, Smoked My Transformer
- Anyone know how to use a voltmeter?
- Push Pull Question
- Space heaters versus my amp
- High pitch squeel
- Amp Tremolo
- ok... I've been in here before with this sucker... rectifier questions...
- 6SC7 tubes - anyone have a good source for non-microphonic examples?
- Amp tech/repair in Reno, Tahoe,Truckee, Sacramento, or Bay Area?
- VOLUME AND BASS LOSS.changed imput jacks.my tech said power tubes are ok
- Finding the mA in a device?
- What's a good 6V6 tube?
- Do all mullards flash at startup?
- Narrow Panel Tweed Deluxe Output Transformer ????
- Mods for Crate VC 20 (Old Vintage Clubs)
- mechanical rattle when firing up old amp
- a slightly different filter cap discharge question
- Removing resistor at input on master vol models???
- Help! I need speaker advice for a Super Reverb
- Tales of Twin Hackery...
- First amp, need tube ID help
- triode mode vs. pentode mode
- blackstar HT-5 volume issue?
- Ohms Mismatch
- Are you experienced with NOS tubes?
- Can't figure out this resistor
- another bias question
- Help with Naylor amp needed.
- Yet another Phase Inverter Tube Q
- Can I identify a bad tube by looking at it?
- Does my amp need a retube(Marshall)??
- 2203kk schematic
- Need Brown Princeton cabinet dimensions
- Good book on amp circuits
- Got a nasty distorted sound on top of every note...
- I can't wait to cut one of these open
- Harp player wants me to re-work his amplifier - circuit suggestions sought
- Mullard 12AT7 - CV4004 vs. CV4024
- Blues Jr Tube Swap? What Sounds Good??
- What could cause this strange noise?
- Plate Voltages
- Amp killed my pickup?
- Bias switch on AC30CC
- This is why you don't replace a fuse with one of a higher value.
- 6G2 Princeton Speaker Recommendation
- Which 6SJ7 tube?
- Replacing a Marshall preamp tube socket.....
- Which tubes to pull?
- My vintage Mullard 12ax7 is microphonic. Any hope?
- Voltage Switch
- musicmaster circuit help?
- Adding a bright cap...what size?
- EL34's.....
- Forgetting to connect amp to speakers.
- Cutting cone from speaker to use as a dummy load possible?
- Should I avoid using a 100 watt attenuator w/ a 20 watt amp?
- Help: Tube Identification
- Does anyone have experience with the Iron Sounds fx loop kit?
- peavey classic 50...
- Soldering Question
- Do Super Reverbs and Vibroverbs have the same guts?
- twin reverb silverface 135 mod...again:)
- Speaker hiss in overdrive channel
- 5ar4 Rectifiers....which new production tubes are decent?
- Big disparity in 6v6 current draw...
- Could Someone Please Explain..
- WTB/Looking for 1M-LOG Push/Pull-Pot DPDT Mastervolume in Fenders (01154
- Can anyone help me identify these tubes?
- Rivera knucklehead... Please help me.......
- Groove Tubes GT6L6GE opinions?
- Clark Beauford makes strange noise
- Start-up noises on my blues jr...
- HELP! Weird distortion.....Sometimes...???
- No Breakup and seemingly low plate voltage
- peavey classic 50 212 with celestion gold and hellatone 30
- Question on attenuating a small signal
- crate palomino v32 - tube/speaker swap?
- Funny Speaker noise... help?
- Just another wacky Tube issue (challange)
- What could have went wrong with replacing a tube socket?????
- tubes and speakers for HRD
- How do you Metal Scoop an Amp?
- which tubes to replace, where, and why
- Tremolo "Roach" circuit info.
- Help with biasing '57 Tweed Twin RI?
- Blues junior reverb fail need urgent help thanks
- Deluxe Reverb with 6L6s ?
- Noisy Vox AC15CC
- Link for making a new grill?
- Do I need to bias my Blues Junior when replacing the power tubes?
- Help, Vicky 20112 no sound!?!
- 1965-1967 Pro Reverb Chassis material ??
- Marshall 6100 Blue Tolex - Intermittent Buzz
- Egnater Mod 50 problems
- What would the effect be if...
- Help modifying bandmaster for reverb or just for more gain
- HELP! Amp Question
- Purpose of the "fizzy" (PI) cap?..
- Where can I get a Marshall logo - ....
- Want more "definition" from wound strings...
- What would cause noise to come through the speakers while the amp is on standby?
- Bassman AB165 Question
- Multimeter Advice......
- Building New Marshall Silver Jubilee 2555
- Mesa Bass Head
- Tell me about an "impedance mismatch"?
- Rented backline and bias
- Neil Young's Rig (Herzog)...Tone Quest Report question.
- Marshall JMP 50 Watt 1979 questions
- Combo Cab for Dual Showman Chassis?
- Dean markley RM 80 DRM
- 5E3 Help
- How difficult to change 2 prong?
- Matching speaker power to Amp power?
- Info on this Mullard?
- Caps in my 1963 Gibson ga 8t Discover
- Jensen speaker model?
- SF Pro Reverb delay before tremolo kicks in
- How to handle vacuum tubes? I'm new to this.
- "cut" box question
- Learning Tube Amp Repair/ Servicing
- how do i chek the caps
- Boogie Treble Control works 7-10 only
- Mesa Maverick Rattle
- One powertube lights up bright blue...No sound...Loud hum..
- Home built Twin AB 763 Reverb channel Problems.
- 6V6 Tube ID