View Full Version : Amp Technical Info
- Flub vs. Tight
- Allen amp-loud hum
- 6l6 tubes, whats the difference?
- Fender '57 Twin-Amp
- 6L6 to el-34 conversion?
- V1, V2, V3
- Marshall JMP 79' Master Lead
- Fixed vs. Cathode bias
- Jammed Ohm Selector . . . Help please
- you think marshall caps are big???/
- power transformer output voltage
- Have you ever used a vintage.....
- Vibro Champ Mods?
- Class A amp questions
- Development of sound waves
- technical questions - tube vs. solid state, etc
- pulling power tubes to lower headroom
- Best KT88?
- Can I run a 16 ohm and a 4 ohm cab together?
- Blowing fuses on startup?
- Power Tubes for JCM 800
- What is "JAN" in tube names?
- What's a "getter"?
- Cripes! .. The ol' blackfacing a silverface question again.
- Telefunken 12AX7....without diamond
- Is This Problem With My Amp?
- Tube look like stop lights: HELP
- new tubes[smell?] questions/help
- tubes or something ringing on the Metro!
- LEDs for amp footswitch
- Marshall 2061x Preamp Questions...V1 vs V2
- SFDR Amp Hum
- How long can I expect the el84 powertubes to last?
- Silverface Vibro Champ - Sounds like Do Do!
- Can you use 7189 tubes in place of EL84's all the time?
- two rock phasing??
- Tube ID help Please
- Tube Biasing...HELP!?
- Plexi Reissue Bias Problem
- Champ problems
- Silver solder: Tone difference???
- amp messed up?
- Is the Amp Kit market oversaturated?
- Need amp tech in NYC
- Pulling power tubes on a Twin Reverb
- Bad solder joint noise? Or to much bass
- Princeton questions and NorCal amp tech
- Bassman/Bandmaster speaker impedence
- Svetlana 6L6GC vs. GT6L6GE
- Low plate voltage and BIAS
- '75 JMP 50 questions
- Traynor reverb question
- Marshall Cabinet Corner Question
- Marshall TSL 122 Combo - Need Help Please!
- Unsteady bias in Rivera . . .
- How Do Power Transformers Affect The Sound Of An Amp?
- '71 Marshall 50W HT fuse question?
- 12AU7 in V1?
- Pilot light dims.
- 6L6 makes crackling noise
- Two Speakers on an old Fender Princeton Reverb? (ohm question)
- What would cause low plate voltage?
- Help determining what to do
- Fender BF trem mod in Guitar Player
- Cabinet wiring ? - mono AND stereo 2X12?
- EL 34 identification
- amplifier input impedance
- trouble with a mint brown super
- Need a little help with a 61 Deluxe -
- Anyway to reduce amp compression?
- VHT speakers and ohm question....
- HT fuse problem
- Anyone who understands about MESA MARK III, please help me please!!!
- soldano astorverb problem
- Ohm Problem
- Global Negative Feeback
- Matchless DC30 half power switch question
- Super reverb wiring question
- Superlead help
- Can power tubes make Hiss?
- 1974 mod #1987 50 watt lead
- speaker out of phase ?'s
- Basic tube/valve amp questions...
- replace power switch on 2204.
- cleaning pots
- AB763 Bandmaster Intrigue
- come on then.... what's cascading?
- ac30 problems :(
- amp input sensitivity
- do I really need these things?
- Old Park Valve amps
- how bad is this...?
- Raezer style cabs for blues/rock?
- my marshall has way to much treble.
- What is a "slave out"??
- My Marshall is now a Theremin..parascitic oscillation
- You've ever opened/dissembled a pot?
- basic power supply question
- Looking for some silver mica caps........
- Mb Mk Iv Problem
- Best clean headroom: 12AT7 or 5751?
- Mesa Triple Rect problems
- ONLY 12au7 EH's , no other 12au7's, work in Rickenbacker M-11
- How do I tell if my caps are bad?
- static like noise in a Deluxe
- metal base el34's mullard
- Ghia comparisons
- Anybody know where to get some new caps for my laney?
- Marshall Superlead Resto
- Basic Guitar Amp Electronics
- tube questions....
- Are these Mullards?
- Are these 6V6s any good . . .?
- The Other Marshall Tranny Company
- Location of tone stack in signal chain
- Biasing 1969 Metal Panel 50 watt
- Please Help--Replacing Cap Can (RIC M-11)
- Converting Traynor YCV40 to YCV50BLUE?
- Marshall techs...need diagnosis after amp accident please
- Basic troubleshooting question: metallic hiss/hum
- Pre-amp tube recommendations for 18 Watter?
- Difference between tweed 5C5 and 5E5A?
- impedence of a blackface twin reverb
- Buzzing
- opinions, do tube shields really matter?
- traynor ycv20wr eating tubes?
- white noise when switched from standby
- SLO-100 Bias Adjustment
- Yet more thoughts on coupling caps
- Wood for building a 2x12 cab?
- Need NYC amp tech recommendation
- VHT PB 45 tube question.
- amp powerdown
- Odd Ball Happenings from Miswired Mains
- huge volume decrease with JCM 800
- Where to get Power Transformer for Red Knob Twin?
- Another D-style amp question (sorry)
- Take a look at a schematic for me, please.
- Bassman speaker bypass?
- Excessive filament glow on GT 7025 tubes
- Mesa 12AX7'S vs GT12AX7M's
- 2 amps with an A/B switch.
- Please help: Rivera, Soldano out of phase?
- Mismatched impendance between cabs
- 6V6s in Fender Pro Junior?
- bias dilemma
- Help with a bogen schematic
- Magical 6
- New Tung Sol 5881?
- Attenuator for Orange AD30 TC
- Bias help!
- Using a greenback 2x12
- what's the best 15" speaker?
- "Absolute Max" Plate Dissipation?
- Amp Building or FX Pedal Intern Opportunity Wanted
- preamp tube questions.....
- paging John Phillips
- Changing Tubes and Speaker in a Deluxe Reverb
- Bandmaster Reverb output impedance ???
- Amp Problems (Funny Noises)
- Pro Reverb / Super Reverb differences?
- How much tone comes from the cab?
- Help please...possible earthing issue
- Do any of these tubes have any use/application?
- Transformer Heat?
- Causes for a speaker to go open circuit??
- newb question - cap voltage rating?
- I want to replace my screen resistor in my xxx can anyone tell me about this?
- Budda Dual Stage 30
- phonograph tube amp help
- Tube Spring Reverb - Good resources
- Holland amp schematic and help needed
- 5881 tubes
- How to Spec a Replacement PT?
- B&K 600 Dyna-quik Tube Tester?
- Fix for a fuzzy sounding amp?
- I'm blackfacing a SF Pro Reverb...
- AB763 Board noise problem
- Amp vibration noise?
- *umble Chassis Pics...
- Replacing volume pots on a Fender
- Why the "*" ?
- Tweed 5C3...6SC7's? Metal or glass?
- Tubes question in my VHT Pitbull........
- What should I check before powering up my amp?
- Some Advise, Please...
- Anybody know of any good mods for a laney aor 100?
- a good attenuator?
- Any experience w/ Eminence 15" Big Ben?
- Cascading Marshalls inputs ??
- can you I.D these tubes?
- "Ghost" notes in my Silverface Twin..??..
- Unusual schematics
- Would a gaphic EQ work as a simple clean preamp into a power amp?
- need 100VAC, 1000pf capacitor
- Best New Production 12AX7?
- Stupid question: "What is Gain?"
- The Humble Pig Project - some photos
- Fargen Bright Cap
- biasing 6v6 with bias rite question
- howling tube amp??
- Mesa tube question: Can I use tubes other than Mesa brand? I was told no by saleman.
- 12ax7 question
- Hiwatt DR504 - Effect of lower gain preamp tubes?
- Fender Champ 12 buggy.
- Voltage Conversion 110 to 220
- Can smoneone guide me how to remove the treble cap on a DRRI?
- Tricky impedance question
- How difficult is amp maintenance/modification?
- Zinky Blue Velvet Mods?
- noice in amp...
- Cause of Ghost Notes?
- My Amp Tech
- quality mods for a 59 reissue fender bassman amp
- Humming Twin Reverb - Help!
- Blown PT on Silvertone 1482
- Marshall Trem Reverb 20
- How many ohm's?
- What kind of wire to hook up my EV?
- Soldano Avenger problem
- Fender '65 Twin Reverb Reissue - Noise Issues
- Blown fuse?
- What happens IF!!...??
- EL34 Tube Question-Need Experienced Feedback
- Switching cabinet Ohmage via resistors
- Trimmer capacitors - anyone use them?
- Question For The Ever Helpful John Phillips
- changing 6550's to EL34's in a YBA-1
- What does a Phase Splitter do?
- 4,8,16 ohm speakers?
- Need PIC of Cap Can installed with clamp, please
- Multimeter reccomendation?
- 12AX7 ID Site?
- How can I tell if my battery is OK?
- Question on 70's Fender Pro Reverb
- marshall knobs
- Found old tubes
- Books on reading amp schematics?
- Combo to Head / wiring
- Blown Speaker
- Power light on JCM800 2204 50W MV
- Desoldering
- Alessandro vs. Weber...
- Naylor Electraverb schematic?
- Amp issue (Tube gurus, help!)
- reverb tube
- Can someone double check my wireing?
- Plate voltage? Low plate voltage?
- Help! Tube Amp cuts out after 2.5 hours
- Is speaker blown if it is "scratchy" when you push on cone?
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