View Full Version : Instruments and Amps

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  1. Space Charge tubes - and uses
  2. Obsessive-Compulsive Purchase
  3. Troubleshooting a 6v6 plexi
  4. Marshall Lead and Bass SS JMP 2195 issues
  5. basic potentiometer help please
  6. Volume Pedal + Amp Board = ?
  7. AB Systems 410C amp mysteries
  8. Can I use 1 op amp with channel switching preamp
  9. Trying To Understand This Power Supply Design
  10. Master Volume stuck on full Marshall 101cfx
  11. Amplee Thunder vintage 35, guitar amp
  12. Dynacord Echocord Mini, no echo!
  13. Impedance Mismatch BurnUp Danger Question
  14. Help with modification on sound effects board
  15. about V73 Maihak amp
  16. Building a crossover for a acoustic mic/pickup
  17. Help with a tube guitar amp for my father, schematic sanity check
  18. Low tech Bass guitar amp/speaker
  19. Splitting an electro-acoustic guitar signal
  20. Help with identification
  21. Need help to design new amp, payed $$$
  22. Mono/Stereo lines and adapters - a few questions...
  23. Peavey 8.5 power amp.
  24. DIY guitar amp
  25. Idea Shaping and Guidance Needed
  26. Grid voltage Pultec 1A
  27. tube amp capacitor voltage ratings help please
  28. Omnichord Repair
  29. Pultec low freq pops
  30. SM57 to 100K input tube premap impedance
  31. Input Jack = ground loop??
  32. Heeeelp:( 70's plexi build
  33. Need some amp help please! No sound!
  34. SilverTone 1474 First stage lots of Hissss?
  35. Studer Console Output Transformer
  36. Farfisa Compact Deluxe
  37. Yet another valve USB/MIC/LINE mixer/preamp.
  38. EL84 as a mic preamp
  39. Building a Faraday Cage - which frequencies do I want to block?
  40. 6x9 instrument speakers almost extinct
  41. 6l6GB not finding alot of guitar amps that run these..
  42. Blue Robbie heater problems
  43. AC15 EL84 output transformer replacement or DIY
  44. Phase inverter distortion
  45. IGOR Red board Sontec Clone - need Schematics please
  46. LM7809 voltage regulator quick question
  47. New Member looking for opinions on my design
  48. Crossover for Fane PRO 18-800P replaced in Martin S18+
  49. Poor little GZ34 F32 B6H4
  50. Lee Jackson xla-1000 squealing
  51. High voltages on Fender 5E5 home brew
  52. AX84 is about to close
  53. 6v6gt output transformer question, help please
  54. Behringer EP 4000
  55. Is this parasitic oscillation (and what do I do about it?)
  56. Limiting inrush current
  57. New small amplifier build
  58. Issue with a home built amp
  59. Troubleshooting the dB Technologies Basic 200 Active Speaker
  60. Clamping pre-amp voltage output
  61. Repairing Samson Servo 300
  62. Please help how to measure/guage output of guitar preamp
  63. Post PI Master or Tone with feedback
  64. Repairing a hissing microphone preamplifier
  65. preamp with 5 or 7 band tone control.
  66. Please help, inductors keep dying
  67. Safer VVR circuit?
  68. Rivera R30-112 repair
  69. 220 to 110 conversion Peavey Bandit 112
  70. Pignose 7-100 repair
  71. Add more gain to Home built Guitar Amp
  72. Weird tube Bass Preamp
  73. Joe Meek Racal Equaliser Help
  74. Schematics needed! Randall Warhead G2 Preamp.
  75. Mixer Repair Warning!!!
  76. Who can design and help build a fine studio mixer?
  77. Bass amp diy
  78. EL 84 voltage
  79. Can I use two reverb tanks?
  80. circuit modification, help Please
  81. big sound from many small amps?
  82. A master volume control capacitor question
  83. phono amp to guitar amp pp EL84
  84. Look over my mic preamp schematic please?
  85. Distortion (2th order) get smoother with more stages?
  86. Newbie Pedal Board PSU Question
  87. Yamaha keyboard one channel feint to dead
  88. Broken input jack?
  89. Sound without tone stack?!
  90. mono amp ideas please
  91. adjusting mic circuit for guitar help please
  92. DIY Effects units/pedals where to start
  93. Calculating Plate current
  94. Deluxe Reverb Kits
  95. Cascode "screen" dissipation
  96. peavy capcitor identification help please
  97. simple amp building question help please
  98. Crate GX65
  99. Power Amp - Problem with DC levels
  100. Head build styles
  101. Vox AD120VT
  102. Lackluster Bass Amp Volume from Class D Build
  103. help with voltage figure for mic pre-amp circuit
  104. Webcor 4903 Amp Conversion
  105. Need help with noise troubleshooting
  106. Scaling the Melodier
  107. 12ax7 output issue on old sunn scepter (similar to dynaco MKIII)
  108. peavey TKO 115
  109. Need Help Deciphering Peavey 5150 Mod
  110. Predicting high frequency cutoff of low cost guitar pickups
  111. Deluxe Reverb AB763 OT selection help
  112. Latest project usb and mic valve mixer for a mobile disco.
  113. Leslie combo amp: Loud mains hum right out of the box
  114. Carlsbro Scorpion 30w combo
  115. Still confused about speakers
  116. 5e3 low sound.
  117. Best Sounding FET for preamp input stage
  118. Acoustic guitar preamp build....hopefully!!
  119. Fender Frontman 212R distorting even on clean channel.
  120. Im looking for some help with channel switching
  121. Pin 4 Screen connection on 6L6GC PP Guitar amp drops B+
  122. Fender 5F1 champ build.
  123. Build advice, JTM45 or Fender Deluxe
  124. Overheated tube socket?
  125. Suggestions for preamp ........
  126. Tube Guitar Amp Building Classes
  127. Ampage.org
  128. Champ 5F1 buzz/hum problem.
  129. JTM45 Metro Amp Mod Question
  130. Transforming 4 track Minidisc recorder to preamp/mixer for studio recording
  131. Clipping Diodes TS9
  132. Mesa Boogie Mark II c+ schematic & experience
  133. Bass Amp Idea
  134. Line out to instrument input level attenuation
  135. Problem with my ampeg portaflex pf-350
  136. Vintage Elka Reverb III
  137. Will these replacements work (OPAMPS)?
  138. JTM45 Metro amp problem
  139. can my amp cope?
  140. Electret Microphone Circuit for Accordion
  141. anyone tryed 6V6 pp ultra linear
  142. Quilter Amps
  143. Taming highs with a capacitor?
  144. 1963 Moody Tube Amp
  145. Could I get a bit of QC on my amp design?
  146. Fender early 1960s Bandmaster Recap
  147. Modular Tube Preamps/Power Amps/Cabinets
  148. largest plate voltage on a 12AX7 question
  149. tube amp direct line out
  150. Clean and Dirty switch in Single Channel Amp?
  151. Marshall bass 100 solid state transmitter
  152. Designing a battery guitar amplifier
  153. EL84 driver stage
  154. New amp build grounding question
  155. Basic question about electron flow to tube grid
  156. Guitar Grounding (Metal Control Plate)
  157. SS Bass Preamp Pedal - Some Questions
  158. Has anyone used London Power scaling
  159. Dynacord MV120 advice?
  160. Advice on < 30 watt EL84 new build
  161. Rack Compressor LED Bar Display Troubleshooting
  162. DC Cathode Follower Mixer
  163. battery amplifier, searching an IC
  164. Silvertone 1482 Capacitor replacement
  165. WEM Dominator MK3 amplifier. Lamp and Transistor Enquiry
  166. 12au7 driver
  167. Hammond AO-39 info needed
  168. Chinese Iron
  169. Klark Teknik DN22 EQ
  170. what amps do i need for this speaker config?!?
  171. line out controller
  172. Old Japanese Tube Amp Ground Wiring Woes
  173. Transformer for guitar pre balanced output
  174. Quick Channel Switch Design Question
  175. Replace EL34 in the powersection with MOSFET?
  176. 5F1 First Build Issues, need guidance
  177. solid state amplifier making noise!
  178. Roland JC120 Distortion
  179. Field test a S.S. rectifier
  180. hybrid output
  181. Is this design ok? Switch from distorted to clean channel on Electra Type Distortion
  182. Traynor YBA-1a Bias issue
  183. Advice on Guitar Amp, should I get rid of it
  184. Stand-by Switch reduce their useful life
  185. Ibanez TSA-15H Power cuts out
  186. loud hum from amp
  187. Mesa Boogie Nomad 45 tube amp repair question
  188. Oscillation in Tube Guitar Amps
  189. Point-to-point wiring vs. PCBs
  190. Help! Bass amp making airplane noise. Unresponsive otherwise
  191. Roland Jazz Chorus 120
  192. does anyone know of a el86/6cw5 quad amp ?
  193. SE10 by ORGASM MACHINES (single ended el34 guitar tube amp)
  194. Marshall 3520 Bass Amp -- Capacitor Question
  195. Earphones
  196. How to build a simple, low power guitar amp
  197. Dynacord Echocord S61, S62 and S65
  198. peculiar PA tube amp conversion
  199. Simple 2 transistor panel mount guitar preamp.
  200. Conceptual question about switching tonestacks in circuit. Channel switching amp
  201. Sovtek EL84M
  202. Marshall Ministack great with stock speaks rubbish with anything else! Why?
  203. Puzzled about input impedance of this guitar distortion circuit
  204. LND150 effects loop not working properly, need help.
  205. AX84 - Cathode resistor replacment
  206. Onboard bass preamp, please help with schematic
  207. Princeton tremolo + bias setting question
  208. 2880 EHX trig out from leds
  209. Good reasonable cost mikes for live recording?
  210. Small 10k:10k Input transformers for Pultec
  211. Phonic PWA-2400, protection circuit malfunction.
  212. FRFR stage monitor for guitar modeling
  213. Home-made tube amp ghost notes?
  214. Bass tube preamp (Alembic F2-B + full EQ + XLR + tuner)
  215. Peavey CS 800 heating
  216. volume and tone for low Z pickup .....
  217. o.c. elect. cascade reverb tank.
  218. Amp Conversion .
  219. schematic daisy rock girl guitar scamp
  220. First Tube amp build, Need a little help
  221. phase splitter for KT88
  222. 1967 blackface bandmaster output transformer fire
  223. Thomas organ guts for amp build?
  224. Troubleshooting Marshall VS100 without powering up?
  225. Old Tube Intercom Amp
  226. Microphone pre amp
  227. Opinion on preamp design channel switching from Marshall to Fender Tonestack
  228. How do you get the values? Basic design questions.
  229. Super Squirrel Monkey - First from-scratch tube amp build, first guitar amp build
  230. Tube stage assignments on my Princeton AA964 clone
  231. Mysterious (haunted?) screeching amp, Marshall, maybe?
  232. DC Coupled Cathode Follower Questions
  233. Issue with Laney GH100L
  234. Disadvantages !
  235. Bassman Hum Help
  236. Smoking bridge rectifier in Valve Jr filament PS (link to schematic)
  237. guitar -> SS line in
  238. Shielded Wire for Outboard Inputs?
  239. 2 sets of wires going into speaker
  240. B-15 build
  241. output transformer Math "a little help with ma homework plz"
  242. Repairing Peavey PV-8.5c - Transistor substitute
  243. Tube recommendations for bass amp
  244. Hohner Concertophon IV and Hum
  245. D I Y .
  246. Amp trouble
  247. Critique of Phonograph Conversion Amp Plans
  248. Schematic for my ridiculous amp is partly complete.
  249. Behringer Guitar Amp
  250. Hiwatt custom tranformer 70v bias question

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