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- Recommend a Digital Meter for Bias
- How much gain from a Marshall plexi preamp?
- Weak Tremolo SF Vibrolux Reverb
- What Are The Tube Manufacturer Codes?
- What controls the voltage here... (pic inside)
- Another odd Voltage reading...
- Advice on how to get rid of fizz
- Looking for Bassman schematic/chasis layout
- Where can I get a 240 volt Soldano power transformer?
- Power tube matching
- Too much power filtering....
- static coming from my deluxe reverb amp
- Marshall Footswitch Problems
- Advice needed: '63 Vibroverb reissue
- Fender Twin Reverb extension speaker question
- Can you drive a reverb circuit with 1/2 a tube?
- Marshall 1987x woes.. STILL!
- Reducing trainwreck clone gain?
- New Tubes for a Mesa Mark III... opinions?
- Yikes! Can this be good for you?
- Fender Feedback Resistor Question.
- When is it OK to sub power tube types?
- Vishay Dale RN65 resistor max voltage @ 350v? Any Danger to use in plate loads?
- lower wattage, simplified Super Reverb: DR's power section?
- 6v6 touching speaker magnet?
- How do I raise the overal B+ voltage in a Fender?
- Can a "high" gain TR Emerald pro be modded to a "low" gain model?
- Tube ID Clarification
- Anyone here heard of "too much B+ voltage to use a SS rectifier"?
- power scaling for Laney vc15?
- Ampeg Gemini II Bias Question
- champ style build problem
- Plexi bright cap
- Moving a handle on a speaker cabinet?
- Tube Question
- What is the best filter cap for a recap on a Hiwatt DR103 ?
- DRRI Retrofit
- Never Trust a Cheap Multimeter
- rectifer question , after installing allen transformer
- Caps need replacing? (photo)
- Latest 5E8-A build and a cool simple mod for it
- Budda+New Tubes =Heat Help Please
- recycle old tubes?
- Looking for amp tech NW Indiana/Chicago
- Problem with my Avatar 4x12 cabinet
- 'Cap Job' Help
- JBL D120F - How to identify recones?
- 65 BF Bandmaster Ohm? Speakers?
- Caps Questions?
- 250-500pf coupling caps: Best sounding
- any recommended channel switchers for CAE 3+ preamp?
- Recap Time For Tweed Champ?
- TAD 6L6: Difference between big and short bottles?
- Best current production tubes?
- Please explain about transformer size
- Does Ruby make the best sounding reverb tanks?
- 2 Practically Identical Supers... one sounds different.
- think i blew my output transformer
- Best Multi Cap Can for BFPR ?
- clean chording at low volume and my Chieftain is making crackly sounds....
- Late 70's Vibrolux Bias Resistor Value
- ID a Vox re-issue please
- Cermet bias pot
- Amp Tech in Atlanta
- Why is it?
- Anyone recommend a good (But cheap) oscilloscope for internal amp readings?
- Marshall ???
- Combo amp suitable for harp player?
- Problem w/ my JMP, microphonic power tubes?
- Tube driven effects loop???????
- What do you make of this?
- Caps in trem section of fender...
- What tubes can I run in a YSR-1?
- Proper AC signal strength on input.
- How do you know when you're tubes need replacing?
- Oscope w/400VDC max input: Enough?
- Can Someone Critique a Layout (Tweed Pro) For Me?
- power tubes
- Spec'ing a Power Supply
- Is this box fan mod o.k?
- Choke tranny has slight vibration? Huh?
- replacement screw size for speaker
- Need info on running my 63 AC-30 at 240v
- Marshall...noise from input tube
- need plastic or insulated screw driver
- Headroom
- Biasing an amp w/o a "bias meter"
- Vibrolux Filter Caps
- SFDR: Signal clips only in the power tubes.
- Where to get this cap?
- Micro cube issues
- Another "How to bias" thread! This time the Bassman LTD
- Cathode Resistors for 6L6 Tweed Deluxe
- NFB Resistor Value
- Weber Natalie Amp Head?
- Amp Sounds Like Broken Glass
- Vox AC30 Top Boost Mod
- Changing to EL34s in a JCM900 4100?
- audio taper vs. linear taper volume pot Fender amps?
- Tweed Champ Rectifier
- Reverb Issue on Custom Vibrolux.....
- What's your favorite circuit type?
- Amp tech in kansas city, mo?
- Can I get more range of bias in a bassman head?
- Okay, fine...So What *Is* Your Favorite Circuit Type?
- EL-84's in a Super Sonic?
- Weird signal loss through pedal board
- Cap can Mallory type FP???
- Mesa Express 5:50 began smoking and died...
- Heritage Colonial EL-34?
- What's your favorite Transformer?
- Is there a technical explanation for this? Vox CC and Fulltone 69
- Kt 88?
- What causes 'radio thru amp' effect?
- Blew up my Marshall today, tubes? Attenuator?
- Bias Question
- Need unique PT
- 100 Watt Amp Bias:Way Low
- Question on biasing (scoping for X-over distortion)
- Fender Limited Edition Twin Reverb
- Double checking speaker impedance
- Which bias Meter ?? bias Probe, biasrite, biasking
- 6V6G coke bottle usable in a BF Vibrochamp?
- Marshall JMP impedance selector - 6550's
- Tweed Bandmaster OT, Bias, Tubes?
- Princeton Reverb Problem
- 71 SF vibrolux is smoking (literally!)
- Cabinet buzz Pro Reverb
- G12T-75: Chinese or British?
- Anybody mod Rivera's?
- John Phillips (or anyone): What preamp tubes in your T-Verb?
- When is biasing needed?
- What is the best and safest method to bias an amp?
- More newbie bias questions....
- tube question for modded 5E3
- Help with a Peavey C30 will you???
- Troubleshooting a rattling 1X12 combo
- Marshall AVT150 problem
- Fender Pro Speaker Question?
- Amp has ring modulation effect
- Power Xformer Vintage Fender Question
- HELP! MM Tranny install (choke & OT) and now theres horrible distortion!
- Photos of transformer and pickup dissection?
- Wow! 5E3 with fatstack tranny!
- Upping An Amp's Power From 5W To 15W
- Reducing Hissssssss
- from Celestion: British or Chinese?
- 1.5k resistor on power tubes... 1/2 watt ok?
- New Genalex KT66 Valves
- mic pre technical question
- Bad Cat bias
- English Voltage to US Voltage
- Stupid question on changing amp channel - Rivera
- removing the bright cap on marshall volume pot
- Mallory VS Orange Drops whats the difference?
- What should I do with this vintage Fender BandMaster???
- DIY BlackFace Hi Power Twin?
- Q: Reverb tanks, RCA ins and outs... crazy idea.
- bias question (probably naive)
- Is a "reconed" greenback really something to worry about?
- Tone Stack Lift Question
- Cab failing pleaes help!
- Jewel light for my SF Fender?
- Trannie Config
- 5 E 3 for a Gibson 335 -- what mods ?
- Variac Volume Control ?
- Where to get amp knobs?
- Channel Mixing Resistor Values
- how do i rewire a badcat from 110v to 240v ?
- 5E3 line out mod
- Bogner XTC 101b noise issue
- Any Hot Cat players find it too gainy? May have a mod to help...
- KT66s in a 1987 plexi anyone?
- MKIII Woes
- Fender Clone volume pot value
- Multimeter quality
- old preamp tube #$'s?
- Vox AC15 Conversion?
- DR. Z Airbrake owners unite!
- Super-sonic (head) tube function/location?
- Fender 57 Deluxe Class question
- Honky mids, bad preamp tube?
- Designing for Impedance in a Gain Stage
- Divided By 13 Bias Pot
- Just bought some re-cone Greenbacks...can someone tell me about the cones?
- Turning off Amp it......
- Mercury Upgrades
- super reverb
- Software Oscope
- Tube Tester Help in Dallas
- 5e3 6v6 to el84???
- One power tube glowing red, please help!
- KT88 SE Amp Question
- Want to build my first amp - advice for a newbie!
- Need some "cage nuts" - clip in nuts that hold a chassis in a head shell
- What mods have you done to your 18w amps??
- 5ar4 rectifier tube, replaced with a 5u4gb FRY a PT
- Looking for an AA864 Fiberboard
- Dumb question...please help
- kt66 vs 6l6
- Cathode vs. Adjustable Fixed Bias
- Output Watts?
- Bias after replacing 5AR4?
- Buzz In Audio Signal
- Traynor YBA-1A mkii Output Transformer Suggestions
- Super-sonic schematic?
- What's a fair price for a cap job...
- Bassman mod question for a newby -
- So I got this new multimeter, help?
- What's usually involved in a 3-prong upgrade?
- I need a Boogie DC5 modded in London uk
- Vox AC15CC1 static?
- which tube does what?
- can a deluxe reverb use a 2x10 speaker baffel?
- I Need A Schematic
- Rant Mod for Valve Jr
- Supersonic biasing info?
- Amp/Cab Ohms Question
- What is the effect of changing these resistors...
- What does an authentic 60' Jensen C10Q Speaker look like?
- Volume Level Sensitivity
- Safety question
- all of a sudden volume jump - help?
- Ohmage Question number 3307, Hot Plate +?
- Wiring a variable impedance switch?
- How to bias a TSL-100 with multimeter?
- Old greenback pics...someone help identify them please.
- OT Primary Impedance Ouestion
- Grillcloth for SF > BF conversion?
- What Do Blown (Or Failing) Speakers Sound Like?
- Whopping Ampeg V2 just in...cap replacement?
- Super Sonic "Cold as Ice" no more!
- 16 ohm Speakers Amp set to 4 Ohms?
- Where to find schematics for Reissue Ampeg J-12R and J-12T ?
- Celestion G12-65 repair question:
- Step down transformer quick!!!
- Transformer replacement and tone
- Tube Gurus...is the getter in this Ratheon 12AX7 bad?
- Standby switch for newer Fender Blues Deluxe
- Adding line out to Hiwatt clone.....
- "Ticking" vibrato problem
- Why are my Filaments not getting to 6.3 volts?
- Master Volumes and their variations...
- tips on how to retighten tube sockets ?
- quality of resistors question
- Vox AC15cc Mods?
- Can blown speakers be visually un-damaged?
- What EL-34's for my 1986 clone?
- Diagnose An AC30 Problem?
- Marshall 3203 Artist
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