View Full Version : Amp Technical Info
- Fuse for Marshall amp...
- Ampeg V4 Transformer failure
- Swapping Power Tubes W/out Bias
- Zwengel combo help please!
- Adding a pilot light (power light) to a amp running off of line power?
- Good Speaker Cab parts website
- Volume Box instructions
- I thought GT 6L6 GEs were supposed to be identical to GL6 GCs? WTF?
- Construction plans for a Marshall 4x12 Slant?
- Reverb tank installation?
- Newbie Tube Amp Standby Questions
- bias range for a pair of 5881's
- Help... Fender 6G15 reverb AKA is something wrong with my p. transformer???
- 4xEL84 with Fender AB763 preamp?
- '62 Bassman - Smoking Amp!
- 6CG7 interchangable with a 12au7?
- Bias range resistor question
- Speaker Cloth attachment?
- vox ac15 reverb tank replacement question
- Pulling Power Tubes to Reduce Level
- Is my speaker blown?
- New Blues Jr. woes, can you help? Fried
- Ever heard of NTE electrolytics?
- do bigger caps = quieter amp?
- Boogie Bias Mod - Help!
- 6v6 in place of El34s?
- How do you power down you amps?
- 50 watt Plexi OT with 100 watt iron?!?
- breakin in speakers
- Marshall Jubilee 2558 a little quiet
- Looking for DIY AMP info
- '64 Super Reverb blowing fuses?
- So why are 2x6L6 or 2xEL34 50 watts?
- 16ohm spkr in Deluxe Reverb?
- Removing the amp reverb unit (again)
- Front Loaded Vs Rear? Sonic differences?
- Tips for setting up Germino Club 40 for 6V6
- Headroom & EQ help, PLEASE!!!
- NOS Tubes
- Are dovetail joints in pine cabinets important?
- Who makes the highest gain EF86 preamp tubes Today?
- Anyone tried the Tungsol Reissue ECC803s gold pins??
- Wiring question
- Tube Tester owners....
- PT for P-P Class A low power?
- JMP 6550 - EL34 Conversion Worse.
- quick disconnect vs. soldering
- Are these the "desired" RCA 6V6GTs?
- NOS Tesla E83CC ?
- Help: Re-cap a Traynor YBA-2
- Demeter TGA-3 having Volume Fluctuations...
- Help dating a silverface Deluxe reverb
- Best solder for speakers?
- MOJO "Dijon" coupling caps
- One tube glowing brighter
- 5U4 vs 5AR4/GZ34
- Maximatcher vs/and Hickok 600A tube testing/NEW HOBBY??
- Old tubes off Ebay....
- Old Caps/Old Tubes-their respective noises
- Mullard XF-3's
- 5751's in a vox
- Some basic technical questions from a completely tube ignorant guy. Some help please.
- Help with an AC30 HW Combo
- NOS tubes info site?
- So, who's up for some troubleshooting?
- Supro Thunderbolt loudness issue
- Need piping for recover!!
- Old 12AX7 Tube ID
- eminence 15" anyone?
- Field coil spkr to non-field coil...?
- Mesa Boogie Lonestar Special
- Mesa Nomad head, big hum, help!
- why do people do this?
- Help! The rice-krispy guys are in my Rivera amp!
- Help me solve a Fender Deluxe mystery.
- Weak Tremolo on AA964 Princeton
- An vintage BFDR problem
- Bogner 101B Bias Setting
- Look what this guy did.
- Marshall footswitch question.
- Fender 5E5-B Schematic
- A question for the Techs
- Ohm question
- What to do with Tremolux?
- Different Caps/Resistors - Which ones?
- New amp build ideas - 8x 6CG7 output tubes
- Help me pick a preamp tube combination
- The all tube modeling amp -- pipe dream?
- More old tubes....
- Ampeg Reverberocket lost most of it's volume
- 16 ohm vs. 4 ohm sound difference in a Marshall cab?
- Tech in NC/SC ?
- Tube Burn-In
- How can I tell if my caps are discharged, and safe?
- EL84 Getter Flashing Black???
- Two Rock Sounds Dull....
- Isolation Transformers and Chassis Safety
- Jje34l Or Eh 6ca7 For Vanhalen 1 Sound
- princeton "vibrato"
- Peavy classic 30 info
- Adjusting catode follower and/or phase inverter for more gain ??
- Adjusting gain , Plate resistors vs. cathode resistors ?
- Tubes mounted on the PCB good or bad thing?
- Nasty hum in build
- Marshall 6L6-EL34 Mod-Easy?
- Latest old stock tube score....
- 12FQ8 the same as 12AX7?
- Using a 5y3 in a gz34 slot???
- DRRI with Hoffman board no tremolo
- TNT (The Neco Tube)??
- strange problem solved on my Deville
- Amp motorboating...
- 3 Spring vs. 2 Spring reverb
- Replacement Filter Caps for Marshall 1987X
- BFDR Vibrato tick tick tick....
- Power tube (screen?) resistors on BFDR, etc.
- BFDR Vibrato channel trebly?
- Power attenuator for Super Reverb
- JCM602 Ground Loop w/Effects In the Input and Loop At the Same Time
- Adjusting bias (particularly Fender BF)
- Amp Book Recommendations
- PCB designer/manufacturer hanging out here?
- Advice on this old brown super
- Reverb "boings" too fast
- Measuring bias with only a multimeter
- Power and Preamp tube reccomendations...
- Problem with Victoria Tweed Champ
- Output Transformers & Power
- The REAL Primary Impedance for a SE-6v6?
- Pro Jr volume loss....
- Name that tube
- Four 6V6's = 50 watts?
- More on 6V6 bias: Fender Champ
- Power tube specs?
- AMP Tech in Bay/Marin Area of California
- 2 NOS Westinghouse England 12AX7
- Kudos to Todd Shock, Wakarusa Amplification
- Test measure of a bias probe?
- More NOS..."Scoba" labeled 12AT7's...
- More 'whodat tube' hi jinx (pics)
- Mullard Long Plate...is it REALLY worth it?
- Expert speaker help needed!
- Marshall Amp Repair Update
- How to determine plate-to-plate impedance from plate only???
- Four 6L6GC Tubes 35 40 40 35 -- Balanced?
- SJB Audio Preamp Mystery(John Phillips)??
- suitable replacement caps for an early b15?
- RTC labeled EF-86's
- Dickerson Amp problem
- Dealing with stripped cab panel screw
- Need schematics for a good SS F/X loop.
- Super Reverb Bias volatge -49 to -60V..???
- How do you actually screw down a reverb bag?
- Another "can you ID this tube"
- 6550's in a Fender Twin RI
- trem help in AB763 twin reverb
- Reverb problem on Cornford Hurricane
- NOS 12ax7 Score?
- AB763 Bandmaster vs. AB165 Bassman...How similar are the circuits?
- Cutting a cabinet opening for a 5E3 chassis
- Blackface Deluxe Reverb extension speaker question
- Speaker comparison question... will this work?
- Mullard Long Plate vs Non Long Plate 12AX7s?
- Can a novice safely re-bias a Vic 50212 (Tweed Twin)?
- Help with strange AC30 out-of-tuneness.
- Adding Tube Rectifier to Vibroking?
- anybody try re-tubing(pre) an FTR-37
- cab splitter
- Conversion Issue: Help/Advice/Opinions needed by the experts
- Do you need to bias an amp with 1 preamp and 1 power tube?
- schematic for Weber MASS?
- Speaker Efficiency of Fender Hot Rod Deluxe
- Rectifier tubes in my Masonette
- Variable Bright switch mod for Pro Reverb?
- Who would you have do a vintage Jensen recone?
- Where to get tolex adhesive
- Traynor YCV20WR reverb hum
- Quick question...EL34 make..
- Bandmaster Humming?
- Heat
- 8 ohm vs 16 ohm - Same Model Speaker - Tonal differences
- Help With AC-30CCX Problem
- EIA code 451?
- Blackface Proreverb Microphonic!
- Can't Bias up to spec with various tubes
- 6L6GE bias the same as 5881?
- best place to send amp for overhaul?
- Pro Jr. Makeover...
- Got Raytheons?
- Ultimate Attenuator Hookup Question
- Change transformer in Bandmaster?
- book review: "Fender Bassman 5F6-A"
- Yea! It is BACK....
- tweed deluxe build PT question
- Varitone guitar inductor specs needed
- Identify the 12AX7's please!
- '62 Fender Concert Help
- Philosophical Q on Tone Controls
- Can I run a 150 watt head through a 1x12?
- you may remember my Magnatone 260-A project
- Can you make an 8 ohm speaker into 16 ohms?
- Gurgling/static noises from my amp?
- '71 Fender princeton non-reverb (Again!)
- help needed - installing 80pf cap in my Valve Junior Head
- Power supply dropping resistors - tone changes?
- '94 Concert gain channel dead
- Mid pot in Fender 6G8 tone circut
- source for yellow astron caps?
- Is it possible to remove 3 tubes on a 100 watt to make it 25 watts?
- Speaker mismatch in SS amps
- Which caps to replace?
- Mesa 6CA7 = Sylvania?
- Is my orange label jbl speaker still good?
- Why does this amp sound good?
- JCM 800 2204 EL34 Bias Range?
- Do lower draw power tubes risk overload of caps?
- Power supply filtering
- Tube swap in BF Deluxe Reverb
- Bypassing zener with cap
- Howto shorten a pot shaft?
- headroom loss
- help for '61 Ampeg Reverberocket?
- Screen voltage higher than plate
- Buggy standby - Fuchs mod...
- Strange Marshall 1987x issue
- Sadness is breaking a long plate Mullard...
- Tube amp with no sound coming out :(
- Sylvania 12AX7 "dark horse"
- Do I have to rebias my old Magnatone 210(single 6V6) after a tube swap?
- Traynor Guitar mate reverb problem...
- Marshall 2061X issue (reprise).....
- Fender Super Twin
- Why is my Marshall low on output?
- Innovative Guitar Amps Circuits
- Need help matching ohms
- Changing speakers, draining caps
- Another 12AX7 identification....
- Finally got my hands on a smooth plate telefunken....
- Amp signal cutting in & out on clean channel
- ef 86 identifiaction
- Blonde Circuit Bassman Filter Cap Values?
- Fender Super Reverb RI biasing?
- HELP! Bad distortion!
- impedance question
- Tube Tester Question
- Quick speaker connection question (solder/tabs)
- HELP! My amp is down!
- Amp Tech near Chicago? For SF Fenders
- Removing Tubes in a Twin Reverb
- 50's Gibson GA6 60 watts?
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