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  1. IGOR Red board Sontec Clone - need Schematics please
  2. LM7809 voltage regulator quick question
  3. New Member looking for opinions on my design
  4. Crossover for Fane PRO 18-800P replaced in Martin S18+
  5. Poor little GZ34 F32 B6H4
  6. Lee Jackson xla-1000 squealing
  7. High voltages on Fender 5E5 home brew
  8. AX84 is about to close
  9. 6v6gt output transformer question, help please
  10. Behringer EP 4000
  11. Is this parasitic oscillation (and what do I do about it?)
  12. Limiting inrush current
  13. New small amplifier build
  14. Issue with a home built amp
  15. Troubleshooting the dB Technologies Basic 200 Active Speaker
  16. Clamping pre-amp voltage output
  17. Repairing Samson Servo 300
  18. Please help how to measure/guage output of guitar preamp
  19. "Active" Marshall tone control
  20. Post PI Master or Tone with feedback
  21. Repairing a hissing microphone preamplifier
  22. preamp with 5 or 7 band tone control.
  23. Please help, inductors keep dying
  24. Safer VVR circuit?
  25. Rivera R30-112 repair
  26. 220 to 110 conversion Peavey Bandit 112
  27. Pignose 7-100 repair
  28. Add more gain to Home built Guitar Amp
  29. Weird tube Bass Preamp
  30. Joe Meek Racal Equaliser Help
  31. Simple guitar preamp with 1 transistor
  32. Schematics needed! Randall Warhead G2 Preamp.
  33. Mixer Repair Warning!!!
  34. Who can design and help build a fine studio mixer?
  35. Bass amp diy
  36. EL 84 voltage
  37. Can I use two reverb tanks?
  38. circuit modification, help Please
  39. big sound from many small amps?
  40. A master volume control capacitor question
  41. phono amp to guitar amp pp EL84
  42. Look over my mic preamp schematic please?
  43. Distortion (2th order) get smoother with more stages?
  44. Newbie Pedal Board PSU Question
  45. Yamaha keyboard one channel feint to dead
  46. Broken input jack?
  47. Sound without tone stack?!
  48. mono amp ideas please
  49. adjusting mic circuit for guitar help please
  50. DIY Effects units/pedals where to start
  51. Calculating Plate current
  52. Deluxe Reverb Kits
  53. Cascode "screen" dissipation
  54. peavy capcitor identification help please
  55. simple amp building question help please
  56. Crate GX65
  57. Power Amp - Problem with DC levels
  58. Head build styles
  59. Vox AD120VT
  60. Lackluster Bass Amp Volume from Class D Build
  61. help with voltage figure for mic pre-amp circuit
  62. Webcor 4903 Amp Conversion
  63. Need help with noise troubleshooting
  64. Scaling the Melodier
  65. 12ax7 output issue on old sunn scepter (similar to dynaco MKIII)
  66. peavey TKO 115
  67. Need Help Deciphering Peavey 5150 Mod
  68. Predicting high frequency cutoff of low cost guitar pickups
  69. Deluxe Reverb AB763 OT selection help
  70. Latest project usb and mic valve mixer for a mobile disco.
  71. Leslie combo amp: Loud mains hum right out of the box
  72. Carlsbro Scorpion 30w combo
  73. Still confused about speakers
  74. 5e3 low sound.
  75. Best Sounding FET for preamp input stage
  76. Acoustic guitar preamp build....hopefully!!
  77. Fender Frontman 212R distorting even on clean channel.
  78. Im looking for some help with channel switching
  79. Pin 4 Screen connection on 6L6GC PP Guitar amp drops B+
  80. Fender 5F1 champ build.
  81. Build advice, JTM45 or Fender Deluxe
  82. Overheated tube socket?
  83. Suggestions for preamp ........
  84. Tube Guitar Amp Building Classes
  85. Ampage.org
  86. Champ 5F1 buzz/hum problem.
  87. JTM45 Metro Amp Mod Question
  88. Transforming 4 track Minidisc recorder to preamp/mixer for studio recording
  89. Clipping Diodes TS9
  90. Dynavox VR70
  91. Mesa Boogie Mark II c+ schematic & experience
  92. Bass Amp Idea
  93. Line out to instrument input level attenuation
  94. Problem with my ampeg portaflex pf-350
  95. Vintage Elka Reverb III
  96. Will these replacements work (OPAMPS)?
  97. JTM45 Metro amp problem
  98. can my amp cope?
  99. Electret Microphone Circuit for Accordion
  100. anyone tryed 6V6 pp ultra linear
  101. Quilter Amps
  102. Taming highs with a capacitor?
  103. 1963 Moody Tube Amp
  104. Could I get a bit of QC on my amp design?
  105. Fender early 1960s Bandmaster Recap
  106. Modular Tube Preamps/Power Amps/Cabinets
  107. largest plate voltage on a 12AX7 question
  108. tube amp direct line out
  109. Clean and Dirty switch in Single Channel Amp?
  110. Marshall bass 100 solid state transmitter
  111. Designing a battery guitar amplifier
  112. EL84 driver stage
  113. New amp build grounding question
  114. Basic question about electron flow to tube grid
  115. Guitar Grounding (Metal Control Plate)
  116. SS Bass Preamp Pedal - Some Questions
  117. Has anyone used London Power scaling
  118. Dynacord MV120 advice?
  119. Advice on < 30 watt EL84 new build
  120. Rack Compressor LED Bar Display Troubleshooting
  121. DC Cathode Follower Mixer
  122. battery amplifier, searching an IC
  123. Silvertone 1482 Capacitor replacement
  124. WEM Dominator MK3 amplifier. Lamp and Transistor Enquiry
  125. 12au7 driver
  126. Hammond AO-39 info needed
  127. Chinese Iron
  128. Klark Teknik DN22 EQ
  129. what amps do i need for this speaker config?!?
  130. line out controller
  131. Old Japanese Tube Amp Ground Wiring Woes
  132. Transformer for guitar pre balanced output
  133. Quick Channel Switch Design Question
  134. Replace EL34 in the powersection with MOSFET?
  135. 5F1 First Build Issues, need guidance
  136. solid state amplifier making noise!
  137. Single 2n3904 Channel Switching Guitar Preamps, 5 circuit ideas shown, please comment
  138. Roland JC120 Distortion
  139. Field test a S.S. rectifier
  140. hybrid output
  141. Is this design ok? Switch from distorted to clean channel on Electra Type Distortion
  142. Traynor YBA-1a Bias issue
  143. Is asymmetric clipping in distortion ok for your amp?
  144. Advice on Guitar Amp, should I get rid of it
  145. Stand-by Switch reduce their useful life
  146. Ibanez TSA-15H Power cuts out
  147. loud hum from amp
  148. Mesa Boogie Nomad 45 tube amp repair question
  149. Oscillation in Tube Guitar Amps
  150. Point-to-point wiring vs. PCBs
  151. Help! Bass amp making airplane noise. Unresponsive otherwise
  152. NOT the best distortion, but perhaps the simplest.
  153. Roland Jazz Chorus 120
  154. does anyone know of a el86/6cw5 quad amp ?
  155. SE10 by ORGASM MACHINES (single ended el34 guitar tube amp)
  156. Marshall 3520 Bass Amp -- Capacitor Question
  157. Earphones
  158. How to build a simple, low power guitar amp
  159. Dynacord Echocord S61, S62 and S65
  160. peculiar PA tube amp conversion
  161. Dynamic Clipping Using a Transistor for Guitar Distortion
  162. Conceptual question about switching tonestacks in circuit. Channel switching amp
  163. Sovtek EL84M
  164. Marshall Ministack great with stock speaks rubbish with anything else! Why?
  165. Puzzled about input impedance of this guitar distortion circuit
  166. LND150 effects loop not working properly, need help.
  167. AX84 - Cathode resistor replacment
  168. Onboard bass preamp, please help with schematic
  169. Princeton tremolo + bias setting question
  170. 2880 EHX trig out from leds
  171. Good reasonable cost mikes for live recording?
  172. Small 10k:10k Input transformers for Pultec
  173. Phonic PWA-2400, protection circuit malfunction.
  174. FRFR stage monitor for guitar modeling
  175. Home-made tube amp ghost notes?
  176. Bass tube preamp (Alembic F2-B + full EQ + XLR + tuner)
  177. Peavey CS 800 heating
  178. volume and tone for low Z pickup .....
  179. o.c. elect. cascade reverb tank.
  180. Amp Conversion .
  181. schematic daisy rock girl guitar scamp
  182. First Tube amp build, Need a little help
  183. phase splitter for KT88
  184. 1967 blackface bandmaster output transformer fire
  185. Thomas organ guts for amp build?
  186. Troubleshooting Marshall VS100 without powering up?
  187. Old Tube Intercom Amp
  188. Opinion on preamp design channel switching from Marshall to Fender Tonestack
  189. How do you get the values? Basic design questions.
  190. Super Squirrel Monkey - First from-scratch tube amp build, first guitar amp build
  191. Tube stage assignments on my Princeton AA964 clone
  192. Mysterious (haunted?) screeching amp, Marshall, maybe?
  193. DC Coupled Cathode Follower Questions
  194. Issue with Laney GH100L
  195. Disadvantages !
  196. Bassman Hum Help
  197. Smoking bridge rectifier in Valve Jr filament PS (link to schematic)
  198. guitar -> SS line in
  199. Shielded Wire for Outboard Inputs?
  200. 2 sets of wires going into speaker
  201. B-15 build
  202. output transformer Math "a little help with ma homework plz"
  203. Repairing Peavey PV-8.5c - Transistor substitute
  204. Tube recommendations for bass amp
  205. Hohner Concertophon IV and Hum
  206. D I Y .
  207. Amp trouble
  208. Critique of Phonograph Conversion Amp Plans
  209. Schematic for my ridiculous amp is partly complete.
  210. Behringer Guitar Amp
  211. Hiwatt custom tranformer 70v bias question
  212. Guitar amp/cab build questions
  213. Leslie horn on top a lowrey organ mod.
  214. How much current gain do I need for a guitar amp build?
  215. Reverb drive ckt using STF3NK80Z
  216. 6n7 dual triode output
  217. Accuracy in building an electric guitar?
  218. ~150w Marshall build questions
  219. How to include a feedback control knob in this spring reverb system?
  220. which one? accutronics or bitcom digital reverb
  221. A 6L6 Champ with 6C8 preamp
  222. fender mustang 2
  223. Euphoric valve distortion for synths!
  224. Dual Jack Inputs without the HI-LO effect? Fender / Marshall
  225. Rivera M60
  226. Built a reverb tank drive/recovery circuit - dry sound leakage
  227. Class A SE Guitar Amp Design
  228. Fender amp head cabinet question
  229. Vox AC4C1-BL amp.
  230. Ground problem! Noise disappear when i touch the chassis
  231. Fender Passport Amp - Pong sound
  232. embedded amp simulator/fx processor
  233. Trying to turn Maggie 68 solid state into guitar amp!?
  234. Peavey Classic 30 problems
  235. single ended output, no gain?
  236. Gm-5 amp harness
  237. Yamaha GA-15 ground noise even with 0 volume
  238. Neo drivers for lightweight 8X10 bass bottom
  239. 6V6 and 6F6 fixed bias grid No1
  240. Crosstalk between gain stages of Mesa Road King II guitar amplifier
  241. Randall RG1003H troubleshooting
  242. Self split cascode?
  243. Added Ground - Now Get Major "Hum"
  244. Attenuator shortening tube amp output?
  245. Fingerboard Cello schematics
  246. Output Impedance Effect On Tone Stack
  247. Acoustic Piezo Tube Preamp
  248. Neodymium speakers for silverface Twin Reverb
  249. Aguilar DB359 schematic
  250. Marshall AVT 20 Loud Humming

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