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  1. Hybrid amp design
  2. Class switchable amplifiers
  3. Marshall AVT 20 Loud Humming
  4. relay switch wiring
  5. Running up tube heads
  6. Fender FM212R Problems
  7. Speaker Box issues
  8. Typical power for tubes
  9. My new build
  10. guitar amplifier
  11. EL509 SE
  12. adding a fxloop to a guitar amp
  13. Squealing Amp - Dodgy Service Job?
  14. Replacement Marshall Pots
  15. Guitar effects using PIC
  16. power supply
  17. advice: 6L6 hextet for SUper Twin head for bass guitar
  18. Filament transformer secondary center tap at cathode level
  19. Project: Simple bass guitar headphone monitor mixer
  20. Epiphone Valve Issues
  21. musing on guitar amp power supply filters
  22. Peavey KB300 combo keyboard amp repair
  23. experimental ganged pots on preamp
  24. Help to mod guitar pedal for bass guitar
  25. 48v Phantom Power Supply Questions
  26. Auto capacitor "drain" fixture
  27. Bass preamp: non-inverting an inverting tone stack (opamp)
  28. UK : Fender Frontman 15R 8" 8 ohm 25W speaker
  29. Vox ac30 HUM B-2
  30. Which Brand Electrolytic Caps for Fender AB763?
  31. Reverb for project valve amp
  32. Need opinion on Simple mods to Trace Elliot 715 Bass combo
  33. Matchless Hotbox - troubleshooting
  34. Marshall 1959SLP build - Your opinion?
  35. Multi Active Band-Pass Filter Equalizer (Guitar Pedal)
  36. New cab build
  37. Weber tremolo kit
  38. got a 3rd head...
  39. Amplifier for violin
  40. Making a pedal with things I found
  41. Home-made Tannerin or Ribbon Controller
  42. Crossover to protect speakers?
  43. Expensive transformer for bass DI?
  44. Problem with tube amplifier
  45. 50's Bogen DB10 need to reduce gain -Negative feedback?
  46. Notes- Line6 HD147 guitar amp power section
  47. Tone control preamp
  48. guitar effects wiring
  49. 1966 Super reverb problem child
  50. MESA STRATEGY BIAS MOD
  51. Voltage between chassis ground and earth ground
  52. 12FQ8 Guitar amp questions
  53. Plate current and red plate problem
  54. Roland Jazz Chorus 77
  55. Fender DRRI tone
  56. Weber 6m45p high pitch squeal
  57. Marshall G100R CD
  58. Dean Markley rm-80-dr
  59. Possible Bias issue??
  60. gallien-krueger MB150s 120v to 230v conversion?
  61. Separate outputs for ElectroHarmonics - 2880
  62. 4x10 bass stack
  63. ISO: Guitar-Synth DIY Project Help.
  64. SS Vintager has dwindled volume
  65. homebrew 18 watt problem
  66. Silvertone 1482 Fuse Troubleshooter help
  67. 1st filter with GZ34, is 100uf to big
  68. Marshall avt20 problem
  69. Fender Ultimate Chorus noise at power off
  70. [DIY pedal] Replace 12AU7 with 9AU7 ??
  71. Trace Elliot AH300-7 power issues Help
  72. Peavey CS800X Power Transistors
  73. OT Impedance
  74. Tweed Tone Control Simulation
  75. Surviving the Crate Stealth
  76. Post your Horror stories of getting lit up by Filter Caps anyone?
  77. Laney LV100 with Celestion or HH
  78. Reverse diodes on guitar amp output pentodes
  79. GE black-plate 6V6GT Test
  80. Help needed on a DIY guitar amp
  81. Active Bandpass Filter Equalizer (Guitar Pedal)
  82. MSGEQ7 without micro controller?
  83. Vibrato/Tremolo
  84. effects loop, harp amp
  85. Crate Vintage Club 50 Problems
  86. Crate Stealth 50w Kicking ***
  87. Please Help me chose the right speaker
  88. Reverb hum
  89. ID E83CC Tube
  90. Instrument Keyboad audio Fault?
  91. Basic Question
  92. I have a design decision to make - mini guitar amps
  93. picked up an old Fender amp
  94. cool stuff
  95. DIY multi champ amp
  96. 5E3 Volume Tone mod
  97. Shunt regulator B+ in SE Valve Jr.
  98. DIY Stompbox (Foot Bass Drum)
  99. Expert needed: Framus Head NOISE ISSUE
  100. putting an amp and speaker inside an acoustic bass
  101. Anyone have experience with transformers for a 6p30b-r PP Amp?
  102. DIY 50W Plexi Preamp Problem
  103. How to replace a power cord on a tube amp.
  104. strauss SVCL30 AMP faults?
  105. Class B amp for Heavy Metal guitar
  106. Guitar Amps Output Transformer specs
  107. Yamaha TRB preamp low output - HELP
  108. Power source "adaptation" on guitar amp
  109. Options for guitar amp
  110. same transformer, different voltages?
  111. Issue with '72 Twin Reverb.
  112. My Trainwreck pictures
  113. Ampmaker.com
  114. schematic or build thread for guitar amp from hammond parts
  115. JFETs as switch in 2-channel tube amp
  116. Class B guitar amplifier questions
  117. snake oil and bypass caps
  118. Need help identifying this unit
  119. Marshall G80R-CD; Some sound, Speaker is fine
  120. No sound....
  121. guitar amp transformer upgrades
  122. Bassman 50 red plate and bias
  123. whats a good recording interface WITHOUT amp modeling
  124. Behringer Eurodesk MX9000 mixer humming
  125. Pepco Amp
  126. Ampeg J-12T 60's amp issues? Help!
  127. Stereo Mic Preamp (with Phantom Power
  128. DIY iRig
  129. Looking for a schematic.. Crate BV50H
  130. EQ Design
  131. Vox V941 active FX Loop - I'm looking for schematics
  132. AC polarity
  133. Grounded grid stage in guitar amp
  134. Madamp g2 to reverb unit
  135. Building power electronics into a wooden cabinet?
  136. TUBES: where do you buy yours?
  137. Adding LED & DC Jack to fuzz circuit
  138. Silvertone Organ Amp
  139. German? amp help please
  140. Guitar amp is 60W or 100W?
  141. Which is the most powerful Class D amplifier?
  142. Preamp for ceramic piezo pickup
  143. DC Pilot Light energy source - cathode resistor?
  144. Marshall 50W ECC808 Homebrew
  145. Speaker Cab Project and Questions
  146. tremolo pot value change - consequences?
  147. How is tube distortion supposed to look like on a scope?
  148. Designed 12AT7 Long Tail Pair phase inverter - half of it doesn't work right
  149. Diy bass amp.
  150. Cajón
  151. How do I connect a microphone to an amp?
  152. Question about Noval 9 pin minature sockets
  153. Lace sensor
  154. New idea for instrument pickups
  155. Lace Alumitone pickups
  156. Q-tuner neodymiun magnet guitar & bass pickups
  157. tone stack buffer
  158. looking for 5 1/4" drivers that handle deep bass
  159. JTM45/50 build, B+ question
  160. .001 ceramic
  161. Tube amp fluctuating volume on moderate gain
  162. Harmony H-305 over conducting 5y3?
  163. Interior Bass Cabinet Volume
  164. Fender clone mashup help (6G3 + 6G6)
  165. Whitley PA Guitar Conversion
  166. Could the SA-310 bass cab be used for a bass and guitar cab?
  167. Bass Amp Project High Quality Transformer
  168. Guitar EL84 push-pull, tone control placement
  169. Peavey CS-800 Static
  170. 3 band tone stack in ecl86 stage
  171. Converting a non-MIDI keyboard
  172. 48V phantom supply for mic
  173. Crate v50-112 noisy clean channel
  174. Internally Miked Accordion Project (5 x WM-61A)
  175. LM4780 Guitar Amp Question
  176. Speaker delay circut design?
  177. Anybody tried the ID series yet?
  178. Building a spring reverb unit
  179. brief sound when switching off amp
  180. Curing hum in Mullard 3+3 valve amplifiers
  181. Build guitar amp with 2 6L6 or 4 6V6?
  182. Installing a potentiometer/volume control
  183. DIY 8 Watt Portable Guitar Amp
  184. headphone input addition to tube amp
  185. emitter follower for onboard guitar preamp
  186. Hammond AO-29 conversion
  187. 8 Watt SE Plexi Style Tube Amp Made from an Akai Roberts Reel Monoblock
  188. Anyone owns a Dynavox VR-307 Amplifier ?
  189. On now! Jamerson's Ampeg
  190. Another DIY tube based fuzz
  191. St. George Amplifier
  192. Attenuator for tube amp
  193. front end channel blend - have you tried it?
  194. Peavey CS-800 Issues.
  195. Fender Twin Troubleshooting Help Please - Jedi Master Needed!
  196. Marshall MF350 diagnostics
  197. Grounding back to back transformers
  198. 5f1 transformers
  199. MARSHALL 9200
  200. schematic for yamaha hundred 212 guitar amp
  201. Marshall 275 valve amp transformer
  202. Blackstar Amps mains connection?
  203. How to improve marshall guitar amp with harsh overdrive?
  204. Need Help with a 1996 SWR Workingman's 12 Combo Amp
  205. PAiA stack-in-a-box guitar preamp kit
  206. 4 guitar amps 1 guitar cabinet, I need help
  207. DIY Guitar Amp Oscillation
  208. 6BM8 guitar amp - SE or PP?
  209. DIY newb bias question (100w guitar/bass amp)
  210. New to tubes, SE guitar amp
  211. schematic needed, cascading gain stages for m@rsh@ll copy
  212. current issue
  213. JCM800 / 2204 style build hum / buzz plea for help
  214. Behringer BX3000t Scematic or info
  215. WEM Cpicat with 3 12AX7's (no 6BR8)
  216. fender acoustasonic 80w
  217. Why does the Tone Bender circuit even work at all?
  218. Loud amplifier hum
  219. eq input and output buffer
  220. LMB 3 b***
  221. Fender Musicmaster melting tube tube sockets?
  222. 5Y3GT rectifier difficulty
  223. Heater regulator for guitar amp?
  224. trainwreck speaker baffle reduction
  225. Help needed identifying 1962 marshall bluesbreaker (reissue) power tx connections
  226. power transformer wiring help
  227. AVT50 Repair
  228. speaker attenuator
  229. odd-ball PI circuit identification, and headroom question
  230. New amp a success, then dead.
  231. CLAVIOLNES
  232. little help here
  233. Do guitar amps tend to self-oscillate?
  234. Mercury magnetics FBfd-om in matchless spitfire
  235. line-out on guitar amp
  236. high distortion pedal
  237. EL34 load line - sanity check
  238. Requesting schematics for Markbass little mark I
  239. peavey heritage 212
  240. Tube Amp Dummy Load questions
  241. Onboard bass preamp troubleshooting
  242. Rickenbacker RA-600
  243. [Help] Modify To Overdrive
  244. Maximum power of Blackstar ID series?
  245. guitar amp baffle board
  246. Weber bias calculator
  247. Which Neo bass units sound good?
  248. Phonic Roadgear 260 Schematic wanted
  249. DIY ribbon microphone preamp question
  250. 2Ж27Л - 4Ж1Л - 12Ж1Л - 4П1Л - How to use ??

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