- Princeton Reverb weak, distorted output, very little bias current
- Current production equivalent to GE6550?
- 76 SF Pro Reverb problem.
- Can anyone help with this "buzz/hiss" issue?
- Changing relay function
- Calling all NOS gurus... help ID this tube
- TR Eric Gales Preamp Tube Suggestions? Tube Identification?
- Is it Safe to use a tube adapter from 12AX7 to 6SL7 ?
- RCA 7025 NOS with a gain factor of 70 / 66
- Fromel mod for Fender Blues Jr
- Presence control dnw on 5E8 build - ideas?
- How much tweed do I need?
- Tubes: Is this RTC really a Mullard el84?
- 1mfd cap on center tap of heaters?
- About to place order: Which of these are closest to the 5e3 fender tweed?
- U.S.A. made black plate 12AX7
- I got a little electrocuted today...
- Sylvania 6L6GAY tubes in Tweed Bassman P2P
- Engl Thunder 50 tube layout
- My '76 Pro Reverb Problem (cont'd)
- '59 Tweed Tremolux (5G9)
- transformer spec help (please)
- Is it a VVR I'm looking for ?
- 66 vibrolux reverb question
- AC30cc OD problem + Lame shop experience
- Speaker for a near field monitor...
- need help with amp slaving 2 tube amps!
- DI question
- Valco gurus: which Supro model/circuit?
- Preamp tubes aren't glowing but amp still works?
- volume loss
- Dr Z MazGT cuts out when volume is at 5 or above but...
- 1965 Gibson Falcon - technical questions
- Months of frustration finally over!
- Shooting tubes with a 2$ torch
- Tubedepot.com sweepstakes
- Oops, ran my amp without a load
- Wiring & speakers for 16ohm cabinet for my Goldtone...
- Speaker inefficiency balancing thoughts?
- 5E8 circuit - mid control?
- standby switch
- Farty BDRI
- Rectifier Question???
- Got to wear Alice Cooper's hat today.
- Need advice on 36Watt LITE
- 5881 question
- DRRI Headroom question.
- Weber fiber board question
- The Lizard is back!
- Exposed Doghouse Caps = Noise?
- Assistance needed - 'splain this Ohms question please....
- Danelectro DS-100
- I've been out of this a while. Help with a Bassman build?
- Speaker for 5e3- Jensen c12q? Opinions
- an on/off lamp with 330 volt dc?
- Size/type screw for standard tube socket ?
- Need a schematic for my 1960's Gretsch 6159
- Westinghouse 6V6GTA? Pics posted.
- Home Made SS Rec Plug
- Help me w/ speaker choices for a 1968 Princeton Reverb
- Confused About Which Caig Deoxit Product To Clean Tube Pins/Sockets?
- Barb EQ directly to Power Amp
- need help with Crate Power Block
- using a combo as an extension speaker
- 1 fried JMP
- Adding a tube to an SS amp - 12AU7 at low plate voltages?
- Sk8 washer for octal? Anyone else make this mistake?
- My latest acquisition - Masco Content
- Looking for a tech to assemble a kit....
- GEC KT66 Tube question
- Why Doesn't This Ever Happen To Me?
- Working on grounding scheme but...
- Intermittant hissing at power-up
- BF Band Master - Diagnosis help, please
- My JCM 900 - (4501) High Gain Dual Reverb sounds terrible!
- Marshall 2061x - grounding?
- Amp Cuts In & Out On Low Notes
- AC30 issue
- Rivera Quiana EL-34 Bias Specs
- Getting started with (amplifier) electronics...(HELP!)
- Egnater Rebel Pre amp tube question.
- ohm question
- Is there such a thing as a tetrode/triode switch?
- Calculating Parallel Resistance
- Bias adjust pots - watt rating question.
- metroamp 1987 is it a 10000 or 12000 or?
- Understanding Ma in biasing question
- How to get started?
- Best place to buy cloth wire for amp project
- Need to find a certain pot...
- amp noise/hiss . gain channel volume affected clean. presence cause hiss.
- YES YOU Can Put a 6L6 in Gries Minnow 5F1 Champ Style AWESOME LIL AMP Pics
- Not a HRDx?? What did I get???
- Most likely diagnosis for LOW volume? Fuchs/Traynor mod.
- Marshall Valvestate S80 clean channel does not work
- What Do You Charge For a Recap?
- Testing individual speakers in a 4x12
- Possible Transformer Issues
- Reeves Custom 50 schematic or layout?
- Do I do anything w this extra blk transf wire?
- How Difficult Champ Chassis Change?
- Now an OT 40-18022 question
- Bogner Alchemist: Weird Voltage Issue
- Grillcloth material???
- Hard-wiring 2 channels together vs. Y-cable : Is there a difference?
- Reinhardt vintage/modern switch? What does it actually do?
- Morgan Amps.... Self BIasing?
- Curious speaker jack question- Switchcraft 11,12a, l12a?
- Any AC-50 experts out there ?
- Are my speakers blown? If so, how?
- 6L6GC in a Vintage Modern?
- princeton > deluxe
- Component wattage and heat.
- Is it advisable to have separated pentode/triode switches for each power tube?
- Tube Socket causing rattle
- Why does 1 layout it's a 100 ohm resistor and not another
- My amp guy disapeared NJ
- Reinhardt amps, what does the Firm/Soft switch do?
- Screech from high gain/ treble.
- GZ34 question.
- Zener voltage drop - Bridge Rectifier
- Webr Bias-rite prblems
- Egnator Tweaker - No bias adjustment?
- Help with '65 Bassman!!!
- Suggest me a preamp, 6550 pp
- Mesa 5:50 Express - tube change result
- Biasing Problem
- Two-prong power outlets
- Loud Hum in Deluxe Rev
- bourns 500k audio mini pots for a bassman build?
- 6l6GC idendification Help!
- Power issues with my Matchless, please help
- Plate voltages and effect on tone/response
- rectifier... 5Y3 > 80
- Vox Ac15hw1 modded for EF86
- 6V6's Turned Black w/Burnt Smell In My 5E3
- Jet city jca20h missing capacitor
- Fizzy speaker, now the amp is cutting out.
- Reforming electrolytic caps?
- Hazards when buying and building with old organ transformers? Tips?
- Intermittent B+ fuse blowing in Germino ....
- 2x12 cab build questions
- 12AX7 identification help needed.
- AC15C1 Plate, Screen, and Grid Voltages
- Tube Smell
- victoria 5112 problem
- High voltage Sprague ATOM electrolytics are on sale at Newark
- Do tubes "break-in"?
- Cleaning up spray adhesive from tolex covering?
- Best new production 5AR4 tube?
- 12AT7 phase inverter?
- Collins MV hooked up backwards cause PT heat?
- 300w 4ohm PA into 2-200w 8ohm speakers
- Weird rumbling noise-Victory Ivy League
- Anyone ever put a single knob tone in a JCM?
- Recapping a Blues Jr amp
- AC15C1 NO REVERB Please Help (Updated happy ending)
- switch for cab wiring question
- Replacing out of spec resistors - Vintage AC30
- Adding a Switchable Feedback/Presence Circuit
- Marshall 4501 1x12 combo footswitch???
- 1st attempt no success new 5e3 build
- tubez question
- Speaker identification (cone codes)
- shorted tubes ?
- decent distortion from 50c5, 35w4 amps?
- Prefered capacitors for a cap job on Marshall?
- Princeton blowing fuse
- My Dilemma
- Building a cab, which jack to use ?
- What footswitch does a Marshall ......
- In need of amp modification information
- 1.25" tall rubber feet - where can I buy them?
- Ive read online that I can use lamp wire?
- Traynor YRM-1 Reverb master losing volume
- Is a 5AR4 really the same as a GZ34?
- Dr Z Route 66 (installed VVR3)
- Sound only on input 2s?
- My supro clone sound nothing like others
- "Amp" pots same as "guitar" pots?
- 65 reissue Twin is cooking hot!!
- Mesa Mini Rectifier loop hissing
- Adding 3-prong AC cord to split chassis Valco
- AC-15 popping fuses
- Biasing question regarding KT66's
- Long plates Amperex ECC83. Help needed with the date code.
- LO from a computer into an amp
- ToneKing Making Sounds Like It's Dying
- Good Amp Tech in Ashevile, NC?
- Best way/practices to check voltages?
- Looking for Top Notch Replacement Tubes for a Matchless Lightning
- ...more fuse blowing fun
- how would you hook these up?
- Tube choices to make.....
- Cleaning 9 pin sockets (duh)
- Voltages for 12ax7 pin 1 way off??
- Amp builders, what kind of tone caps do you use in your amps, and why?
- Anyone know of any good links for tolexing tutorial?
- Faux Effects Loop?
- Fender Bassman SP 3100 (solid state) repair
- 6550 Power tubes pre-1996
- Help! Questions about a 15" JBL D130F (can I use this with my Bandmaster as a 1x15?)
- Blues Junior acting funny.
- Can You Help Me Troubleshoot a Peavey Rockmaster Rack Preamp ?
- Aiken Dummy Load Question
- Have an old tube tester--any salvageable parts?
- Bogen CHB50
- '66 Vibrolux Reverb pots oddity...
- Mesa Lonstar Classic
- How do I jumper channels on the 5e3?
- Public Service Announcement for all Fender amp techs
- AC15C1 fuse blew in standby mode?
- good tube amp tech in lower michigan
- Has anyone here ever used an LED to ground their preamp cathodes?
- Questions for cabinet builders pt2
- Amp Tech Near Fredericksburg, VA?
- Explanation.. on a Hum Fix
- 5e3 and smoke!!
- Deceiving auctions, 12AX7 labeled RCA.
- Hotrod Deluxe Bassman Conversion- Transformers
- What portion of this circuit is the tremolo?
- funky old amp score/ head shell build
- For a kit build, who makes the cleanest layouts?
- RFT's for a cathode follower?
- Diagnose Mesa tube reverb problem
- tweaker 15 running 40 ma per tube at 466volts?
- Celestion 70th Anniversary compared to Vintage 30
- Power supply Resistor conundrum ??
- Modern tubes
- Incentive to share one's amp tone research?
- Troubleshooting my newest build.
- Name that tube...
- Does this look like a viable tone stack mod: Switch to Pot
- How to dispose of known bad tubes?
- Bandmaster Reverb anomaly...
- Is there a 7025/12AX7 that's like an RFT?
- EF83 vs EF86
- I saw the inside of a Slo here and the heater filaments aren't twisted...
- Sano Supersonic HiFi Amplifier Tube Layout-Help
- price check please/pre amptubes
- Pump this 13W AB 6V6 up to 20W?
- PRS Harmonic Generator Fix
- The JCA20H mod thread
- Ampeg b100r combo amp fizziness
- SF Champ Issues
- anyone have ac15/ac30 top boost voltage chart
- Help? My artificial center tap resistors went poof!
- 6m18 head chassis dimensions?
- My B+ is 100vdc too high..5A3 DeLuxe content.
- AO35 -> Ghia troubles