The Blue Guitar
Schematics Page


Guitar Amps and Mods

Blue Guitar amp mods
Groove Tubes
Mesa Boogie
Misc Amp Schematics
Misc Amp Mods

Guitars and Effects

Blue Guitar harnesses
Misc Effects
Misc Guitar Wiring

Other Files

Links to Other User Sites

Vendor Sites


The schematics on this page are provided strictly for educational purposes. If anyone intends to use these designs for profit, they are required by law to obtain permission from the legal owner(s) of the design and comply with any and all laws pertaining to copyrights, patents, and proprietary information. If anyone holding legal claims to any of these files wishes that they be removed or edited, please contact me via the email link at the bottom of this page. Once your identity and legal claims have been established, your request will be honored in a timely manner. Thanks in advance for your cooperation in following these guidelines.

Note on PDF files: Whenever applicable this site will be using the Adobe Acrobat PDF files instead of GIF files because of the higher resolution and lower filesize. There is a link to the Adobe site on the index frame to the left where you can download the appropriate Acrobat reader files for your computer. For computers that do not support Adobe Acrobat you might look into the shareware program GhostScript. If you are still unable to load and print PDF files please send me an e-mail. Thank you.

Steve Ahola
Left Click on link to open file (GIF, JPG or PDF)

Right Click on link for menu to save to disk
(Be sure to try this if Left Clicking does not work!)


Guitar Amps and Mods
    Blue Guitar amp mods
c30scmod.gif [143k] Peavy Classic 30 schematic (with 1998 mods drawn in)
c30schmd.pdf [171k] Peavy Classic 30 schematic (with 1999 mods drawn in)
c50twdbm_sch.pdf [299k] Annotated schematic for Tweed Bassman mod for Peavy Classic 50
blxprsch.pdf [194k] Trainwreck "Blues Express" mod for Electar Tube 30 (schematics)
hrt_bm_s.pdf [78k] Hot Rod Tweed mod for SF Bassman (schematic)
hrt_bm_l.pdf [94k] Hot Rod Tweed mod for SF Bassman (layout)
hrt_bml2.pdf [38k] Hot Rod Tweed mod for SF Bassman: Details for wiring up option switches
hrtp_sch.pdf [138k] Hot Rod Tweed PLUS mod (with Electrolex Rocket 50 option)
hybrid_a.pdf [44k] Hybrid amp version A: Schematic [1977 architecture w/ 1997 values]
layoutrb.jpg [282k] Hybrid amp version A: Layout [1977 architecture w/ 1997 values] [282k] Hybrid amp version A: Relay board pix
pro_man7.pdf [69k] Pro Maniac amp mod for Fender BF/SF reverb amps (design revised 9/19/99)
sopm_1.pdf [48k] Son of... Pro Maniac! (design revised 10/31/99)
** Click here for FTP listings! ** More Blue Guitar Schematics in the Archives!
triple_giant.jpg [233k] Bogner Triple Giant (preamp section)
triple_giant.gif [50k] Bogner Triple Giant (preamp section)
triple_giant.txt Notes on Bogner Triple Giant circuit
xt_cod.gif Bogner Ectasy
** Click here for FTP listings! ** More Bogner Schematics in the Archives!
    Fender Check the Fender Field Guide for Tweed and BF/SF schematics Check Mr. Gearhead for modern schematics Check Fender Heaven, too!
blues_deluxe.gif [212k] Fender Blues Deluxe (factory schem)
blues_deville.gif [225k] Fender Blues DeVille (factory schem)
blues_dlx-dvl_lay.gif [159k] Fender Blues Deluxe/DeVille (factory layout)
blues_jr.gif [229k] Fender Blues Jr schematic
blues_jr.txt [3k] Quick'n'Dirty mods for Blues Jr from Dave Stork
bldvlmod.txt [6k] Mods for Fender Blues DeVille from AMPAGE BBS
concert.jpg [5k] '83 Concert amp (with corrections)
drri_mod.txt [6k] Mods for Fender Deluxe Reverb RI (from AMPAGE BBS)
5a3_sch.pdf [18k] Fender Deluxe 5A3 schematic
5b3_sch.jpg [74k] Fender Deluxe 5B3 schematic
5b3_lay.jpg [146k] Fender Deluxe 5B3 layout [281k] Dual Professional amp designed by Zinky
concert_ftsw.gif [5k] Footswitch for '83 Concert and Twin Reverb II
hotrod_deluxe_pre.gif [14k] Fender Hot Rod Deluxe (preamp section/redrawn)
hotrod_deluxe.pdf [369k] Fender Hot Rod Deluxe (factory schem)
hotrod_deville.pdf [385k] Fender Hot Rod DeVille (factory schem)
hrd_mod.htm [32k] AMPAGE BBS thread on mods for Hot Rod Deluxe
prtweak.pdf Notes on PI power supply mod for Princeton Reverb [184k] Fender Pro Jr schematic
pro_jr.htm [25k] AMPAGE BBS thread on mods for Pro Jr [221k] Fender Prosonic schematic [638k] Factory tech notes for Fender Prosonic (ch sw noise, etc.) [820k] Fender Pro-Tubes schematic/layout (Concert/Pro/Twin)
the_twin.gif [224k] "The Twin" amp from Fender
tonemstr.jpg [609k] Fender Tone Master schematic
vk_schem.gif [121k] Fender Vibro King schematic
vk_mods.txt [2k] Mods for the Vibro King from Tim C.
** Click here for FTP listings! ** More Fender Schematics in the Archives!
    Groove Tubes
gt_trio.jpg [274k] Groove Tubes Trio preamp (original JPG drawing)
gt_trio.gif [130k] Groove Tubes Trio preamp (redrawn!) [380k] Groove Tubes Soul-O 75
    Marshall Check Marshall Heaven for a very comprehensive collection of Marshall schematics Great redrawn schematics for some of the classic Marshall amps Marshall Schematics from the Schematic Guy
2550orig.gif [82k] Marshall Silver Jubilee 2550 amp (lousy factory drawing)
2550.gif [82k] Marshall Silver Jubilee 2550 amp (redrawn!) [808k] Marshall 6100
jcm900mod.gif [22k] Mods for JCM900 [1450k] Marshall JCM2000 amp [647k] Marshall JMP-1 [585k] Marshall JTM30 amp [731k] Marshall JTM60/600 amp (Issue 1) [709k] Marshall JTM60/600 amp (Issue 2/3)
plexi_rev.gif [94k] Hoffman reverb mod for Marshall or 5F6A (as drawn by Chris W.)
** Click here for FTP listings! ** More Marshall Schematics in the Archives!
    Mesa Boogie Check Schematic Heaven for schematics of Mesa Boogie products not currently in production (dead link 06/18/02) Lots of cool schematics here, too!
    Misc Amp Schematics
20wamp.pdf [18k] Custom 20 watt amp from Dave Harris
ac30_2.pdf [34k] Custom variation on AC-30 from Dave Harris ADA Depot [website] MP-1 MP-2 MB-1 etc.
crate_vc3112pre.gif [105k] Schematic for Crate VC3112 amp (preamp)
crate_vc3112pow.gif [132k] Schematic for Crate VC3112 amp (power supply/output) [323k] Schematics for Electroplex Rocket 50 (zipped)
engl_rb100.pdf [23k] Schematic for ENGL RB100 (preamp)
kittyhawk_quattro.gif [68k] Kittyhawk Quattro Preamp
laney_gc30v.gif [168k] Laney GC30V schematic
magnatone_260a.gif [97k] Magnatone M-260A amp schematic
pignose_g40v.gif [101k] Pignose G40V tube amp schematic
roland_jazz-chorus1.gif[240k] Schematic for Roland Jazz Chorus amp (part 1)
roland_jazz-chorus2.gif[224k] Schematic for Roland Jazz Chorus amp (part 2)
selmer_treble-n-bass50.gif [40k] Selmer Treble'N'Bass Fifty amp [189k] SJB Ant 30W Reverb amp
trace-elliot_velocett.gif [127k] Trace Elliott Velocette amp
trace-elliot_velocett.jpg [99k] Trace Elliott Velocette amp (redrawn) [158k] Yamaha T100
** Click here for FTP listings! ** More Miscellaneous Amp Schematics in the Archives!
** Click here for FTP listings! ** Homebrew Amp Schematics in the Archives!
    Misc Amp Mods [784k] Ideas for adding relays to an amp design
ac_to_dc.gif [38k] DC tap from 6.3vac filament supply
bfhotrod.pdf [187k] Hotrodding the Normal Channel (for SR AB763 et al) [250k] John McIntyre's Bluesmaker mod for BF/SF Bassman head (full article)
bluesmaker_sch.gif [64k] John McIntyre's Bluesmaker mod (schematic only)
bluesmaker_layout.gif [135k] Hand drawn layout drawing signed by John McIntyre himself
both_rev.gif [186k] How to add reverb to the Normal channel [303k] Spec sheets on "fishpaper" gasket material used to make eyelet boards
hi_v_ss.pdf [18k] Using IRF820 MOSFETs instead of 12A_7 tubes (Drawn up by Mike Donovan)
input.gif [2k] Custom input jack circuit drawn up by Bruce Collins of Mission Amps
triodesw.gif [10k] Pentode/Triode switch from Lord Valve
pi-m-vol.pdf [15k] Post-PI Master Volume circuit from Bruce Collins of Mission Amps [263k] John McIntyre's Prince'O'Wails mod for BF/SFPR
fx_loop.gif [66k] Tube buffered FX Loop for Marshall amps from Kurt's Amps
fxloop2a.gif [5k] Kurt's FX Loop redesigned by Dietmar Stein
fxloop2b.gif [24k] Kurt's FX Loop redesigned by Dietmar Stein
ss_loop.gif [6k] SS FX loop for Marshall Valvestate amps
tut_loop.gif [25k] Tube buffered FX loop from King TUT [REMOVED]
volreduc.gif [31k] Custom design from Bruce Collins for box to reduce volume from amp
** Click here for FTP listings! ** More Miscellaneous Amp Mods in the Archives!
evh_5150.gif [202k] Peavey 5150 factory schematic (tabloid)
5150evh.pdf [335k] Peavey 5150 factory schematics [383k] Peavey 5150 schematics redrawn
c20laygr.jpg [401k] Peavy Classic 20 layout drawing
c20schem.gif [43k] Peavy Classic 20 schematic
c30layg1.jpg [707k] Peavy Classic 30 layout drawing
c30schem.gif [115k] Peavy Classic 30 schematic
c50schem.pdf [626k] Peavy Classic 50 schematic (preamp and main boards)
valverb.gif [296k] Peavy Valverb (tube reverb and tremelo)
** Click here for FTP listings! ** More Peavey Schematics in the Archives!
    Rivera [449k] Rivera R Series amps [437k] Rivera Knucklehead and S-120/M60/M100 amps
** Click here for FTP listings! ** More Rivera Schematics in the Archives!
atom16.gif [65k] Soldano Atomic 16 amp (2 EL84's) [75k] Soldano SLO 100
slo_notz.txt [5k] Notes on mods for the Soldano SLO 100 [158k] Yamaha T100 (designed by Mike Soldano)
** Click here for FTP listings! ** More Soldano Schematics in the Archives!
mig-50.pdf [40k] Sovtek MIG-50 amp as drawn by Bruce Collins of Mission Amps
mig-50h.gif [56k] Sovtek MIG-50H Tube Midget amp
mig-100h.gif [98k] Sovtek MIG-100H amp
** Click here for FTP listings! ** More Sovtek Schematics in the Archives!
sd1000h.gif [131k] Sundown SD1012C/SD1000H
sndn_a50.gif [153k] Sundown A50 (A36)
sundown.gif [60k] Sundown Rebel 50/100 Lead (SDR100H)
** Click here for FTP listings! ** More Sundown Schematics in the Archives!
wreknotz.txt [19k] Various notes on the Trainwrecked Expresso design
wreckxpr.pdf [189k] Several interpretations of the Trainwreck Express
** Click here for FTP listings! ** More Trainwreck Schematics in the Archives!
    Vox Check Vox Heaven for more schematics Check the Vox UK site for more schematics
ac_4.gif [14k] AC4 schem from AMPAGE library
ac_4.jpg [106k] AC4 schem from Vox-UK site
ac15fact.jpg [140k] AC15 factory schem (JPG)
ac301960.jpg [203k] AC30 schem from Vox-UK site (1960)
ac30bass.jpg [197k] AC30 Bass amp schem from Vox-UK site
ac30fact.jpg [158k] AC30 factory schem
ac30volt.jpg [167k] AC30 factory schem with voltages added
ac30elek.pdf [33k] AC30 schem from Elektor Electronics [4/89 p.29]
ac30_pre.gif [9k] AC30 preamp from AMPAGE library
ac30_pwr.gif [14k] AC30 power amp from AMPAGE library
ac30hoff.gif [18k] AC30 schem/layout drawing from Hoffman site
ac30tbmd.jpg [111k] AC30 Top Boost mod from Vox-UK site
ac30ripr.jpg [96k] AC30 Reissue (preamp) from Vox-UK site
ac30ripw.jpg [88k] AC30 Reissue (power amp) from Vox-UK site
ac30vrev.jpg [158k] AC30 Vintage Reverb amp from Vox-UK site
ac30ptot.txt [1k] Notes from AMPAGE BBS on AC30 trannies
ac34colr.jpg [290k] AC30/4 factory schem (scanned in color)
ac34ef86.pdf [33k] AC30/4 schem redrawn (EF86 ch. & power amp)
ac50_joe.gif [17k] AC50 amp from Joe Piazza's site
ac50_pwr.gif [14k] AC50 power amp from AMPAGE library
ac100.jpg [156k] AC100 amp from Vox-UK site
ac100pwr.gif [14k] AC100 power amp from AMPAGE library
ac120.jpg [167k] AC120 amp from Vox-UK site
berk_pre.gif [9k] Berkeley preamp from AMPAGE library
berk_pwr.gif [14k] Berkeley power amp from AMPAGE library
camb_rev.gif [31k] Cambridge Reverb amp factory schematic
pacemakr.gif [20k] Pacemaker amp schem from AMPAGE library
** Click here for FTP listings! ** More Vox Schematics in the Archives!
Guitars and Effects
    Blue Guitar harnesses
franken1.gif [179k] FrankenStrat wiring harness for 2 humbuckers and 1 single coil pickup
prstrat9.gif [10k] PRStrat wiring harness for 2 humbuckers
sprstr_2.gif [11k] Sup'rStrat wiring harness for 3 single coil pickups
** Click here for FTP listings! ** More Guitar Wiring Diagrams from Blue Guitar in the Archives!
    Misc Effects [104k] DOD FX-30 Noise Gate: Mod to use external trigger for tremelo effects, etc.
jfet_preamp.gif [16k] FET preamps from Stars Guitars and Dwarf amp
ss_preamp.gif [11k] Another ss guitar preamp with Vol, Gain, Bass, Treble
tubewah.jpg [230k] Tube Wah
tubewah1.gif [36k] Tube Wah (redrawn)
vox_treboost.gif [45k] Vox Treble Booster (FX) from Leper's site
** Click here for FTP listings! ** More FX Schematics in the Archives!
    Misc Guitar Wiring
stratoblaster.jpg [78k] Alembic Stratoblaster preamp [1240k] Active mid boost on EC Strat [832k] GP's Four Fabulous D.I.Y Pickup Tricks (from 2/93) [286k] Higher-res diagrams only from above
jag_jazz.gif [90k] Wiring harnesses for Fender Jaguar, Jazzmaster and Tele Custom
jpage_lp.gif [25k] Jimmy Page model Les Paul wiring harness (w/ 4 p-p pots) [247k] Kahler instruction sheet for Floyd Rose licensed trem
strat_blend1.pdf [11k] Strat harness with custom blend pot from David Harris
strat_da.jpg [80k] Dan Armstrong custom harness for strat using 3 DPDT mini-toggle sw
superck1.pdf [21k] Schector Superock wiring harness updated for modern p-p pots
superck2.pdf [21k] Superock (as above but allows for hum-cancelling s.c. linkages)
tele4way.jpg [130k] Tele 4-way switch from Fender Custom Shop
tele5way.gif [6k] Tele harness with 5-way Yamaha selector switch from Gus Smalley
varitone_edit.gif [42k] Thinline wiring harness (edited) [834k] Tone Czar® wiring harnesses from Ed Rembold
** Click here for FTP listings! ** More Guitar Wiring Diagrams in the Archives!
Other Files [link] ACDSee32 v2.4 (link to site) [296k] PCMag's Change of Address utility (32 bit) [893k] Hex Workshop version 2.2 [1970k] JASC Image Commander version 2.00 [92k] Registry backup utility RogSoft homepage to download Notepad+ ( [206k])
template.pdx [44k] Tube amp template for Mayura Draw from Bruce Collins of Mission Amps [25k] Dave Cigna's ToneLite program (tone stack simulator). Temporarily uploaded here until his site is back up. Webpage for Duncan's Tone Stack Calculator [221k] PCMag's TwinFind utility
wc2guide.pdf [86k] Warcraft ][ Guide (keyboard shortcuts and unit stats)

Links to Other User Sites ACPlink- pix and schems of MANY amps ADA Depot- One stop resource for everything ADA! Aiken Amplification (Best site on tube amp theory out there!) AMPAGE ("best resource for tube amps on the Web") guitar amps links page AMZ- schematics for guitar effects Aron Nelson's stompbox Page [old link] AX84 Project Home Page Bill's World (Bill Morgan's site- much Dumble info!) [dead link] Björn Anger's Site (Gibson amps galore!) Cool Schematics Duncan's Amp Pages Effectronics' site Electro-Harmonix user site (The EH Man!) FaradNet, The Capacitor Resource The Fender Amp Field Guide Tim and Joe Gagan's site [bad link] Garnet Amp schematics Generic Amp site [dead link] GEO FEX (R.G. Keen's great site) Gil Ayan's site Guitar setup tips Joe Lemoine's Briefcase (lots of Soldano pix!) Lars Kohkoinen's site Lazyfinger's FX schematic swap site [bad link?] Leper's Effects Schematics [bad link] Lord Valve's site (AKA Fat Willie) [bad link] Machine Gun Amps by Andy Ruhl [bad link] Marshall Amp Schematics from the Schematic Guy Nothing Shocking Electronics' site (Andy Turner) [bad link] Obsolete Electronics (Joe Pampel's site) Pat's Schematics (¢ommer¢ial $ite!) [bad link] Plate to Plate (GFR's site) Plexi Palace site Randy Jamz' site (much info on Garnet amps!) Rob Livesey's site Rod Elliott's Audio Pages Schematic Heaven (Deltabluesman) Shinrock amp schematics page (German) Spring Reverb Info (Roy Mallory's site) Stellan's Schematics: Guitar & Audio Stephen Conner's site [bad link] The Vintage 325 Connection (great info on Rickenbacker and Vox) Tomi Engdahl's home page Torchio's Guitar site [bad link] Traynor Amp schematics Comprehensive page of amp schematic links from Triode Electronics! Waltzingbear's Pro Audio schematics
Vendor Sites Allied Electronics aNaLoG.MaN Vintage Guitar Effects Index Antique Electronic Supply Deaf Eddie guitar harnesses & mods [5 stars!] Digi-Key Electronics DiMarzio Guitar Pickups Fender (and Mr. Gearhead!) Fralin Pickups homepage Fuchs Audio Technology Gibson Hatcher Amps- vintage amps with a twist! Hoffman Amps (great layouts for classic amps!) Jensen Transformers Kangaroo Amp Covers London Power (Kevin O'Connor's company) M & G Amplification (Mike Kach's company) [dead link] Mission Amps (Bruce Collins) Great amps & kits! Mouser Electronics (great source for many parts!) Obsolete Electronics (Great transformers!) PAiA Electronics Rickenbacker Guitars Seymour Duncan Shinrock Transformers Stewart-MacDonald's Guitar Shop Supply Triode Electronics (Uncle Ned!) TubeGuard for Peavey Classic 30! Voodoo Amps (Trace's company) Vox schematics from Vox-UK [bad link] Weber Vintage Sound Technology Zinky Amps from Bruce Zinky (Smokey, MOFO, True Grit)

Thanks to all of you who have contributed schematics to this site!

If there are other schematics you are looking for, I suggest that you first start a thread under the appropriate forum at the AMPAGE Tech-Talk BBS:

If you have any comments, suggestions, or additions for this page please send me e-mail by clicking on the following link: