View Full Version : Instruments and Amps

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  1. Idea Shaping and Guidance Needed
  2. Grid voltage Pultec 1A
  3. tube amp capacitor voltage ratings help please
  4. Omnichord Repair
  5. Pultec low freq pops
  6. SM57 to 100K input tube premap impedance
  7. Input Jack = ground loop??
  8. Heeeelp:( 70's plexi build
  9. Need some amp help please! No sound!
  10. SilverTone 1474 First stage lots of Hissss?
  11. Studer Console Output Transformer
  12. Farfisa Compact Deluxe
  13. Yet another valve USB/MIC/LINE mixer/preamp.
  14. EL84 as a mic preamp
  15. Building a Faraday Cage - which frequencies do I want to block?
  16. 6x9 instrument speakers almost extinct
  17. 6l6GB not finding alot of guitar amps that run these..
  18. Blue Robbie heater problems
  19. AC15 EL84 output transformer replacement or DIY
  20. Phase inverter distortion
  21. IGOR Red board Sontec Clone - need Schematics please
  22. LM7809 voltage regulator quick question
  23. New Member looking for opinions on my design
  24. Crossover for Fane PRO 18-800P replaced in Martin S18+
  25. Poor little GZ34 F32 B6H4
  26. Lee Jackson xla-1000 squealing
  27. High voltages on Fender 5E5 home brew
  28. AX84 is about to close
  29. 6v6gt output transformer question, help please
  30. Behringer EP 4000
  31. Is this parasitic oscillation (and what do I do about it?)
  32. Limiting inrush current
  33. New small amplifier build
  34. Issue with a home built amp
  35. Troubleshooting the dB Technologies Basic 200 Active Speaker
  36. Clamping pre-amp voltage output
  37. Repairing Samson Servo 300
  38. Please help how to measure/guage output of guitar preamp
  39. "Active" Marshall tone control
  40. Post PI Master or Tone with feedback
  41. Repairing a hissing microphone preamplifier
  42. preamp with 5 or 7 band tone control.
  43. Please help, inductors keep dying
  44. Safer VVR circuit?
  45. Rivera R30-112 repair
  46. 220 to 110 conversion Peavey Bandit 112
  47. Pignose 7-100 repair
  48. Add more gain to Home built Guitar Amp
  49. Weird tube Bass Preamp
  50. Joe Meek Racal Equaliser Help
  51. Simple guitar preamp with 1 transistor
  52. Schematics needed! Randall Warhead G2 Preamp.
  53. Mixer Repair Warning!!!
  54. Who can design and help build a fine studio mixer?
  55. Bass amp diy
  56. EL 84 voltage
  57. Can I use two reverb tanks?
  58. circuit modification, help Please
  59. big sound from many small amps?
  60. A master volume control capacitor question
  61. phono amp to guitar amp pp EL84
  62. Look over my mic preamp schematic please?
  63. Distortion (2th order) get smoother with more stages?
  64. Newbie Pedal Board PSU Question
  65. Yamaha keyboard one channel feint to dead
  66. Broken input jack?
  67. Sound without tone stack?!
  68. mono amp ideas please
  69. adjusting mic circuit for guitar help please
  70. DIY Effects units/pedals where to start
  71. Calculating Plate current
  72. Deluxe Reverb Kits
  73. Cascode "screen" dissipation
  74. peavy capcitor identification help please
  75. simple amp building question help please
  76. Crate GX65
  77. Power Amp - Problem with DC levels
  78. Head build styles
  79. Vox AD120VT
  80. Lackluster Bass Amp Volume from Class D Build
  81. help with voltage figure for mic pre-amp circuit
  82. Webcor 4903 Amp Conversion
  83. Need help with noise troubleshooting
  84. Scaling the Melodier
  85. 12ax7 output issue on old sunn scepter (similar to dynaco MKIII)
  86. peavey TKO 115
  87. Need Help Deciphering Peavey 5150 Mod
  88. Predicting high frequency cutoff of low cost guitar pickups
  89. Deluxe Reverb AB763 OT selection help
  90. Latest project usb and mic valve mixer for a mobile disco.
  91. Leslie combo amp: Loud mains hum right out of the box
  92. Carlsbro Scorpion 30w combo
  93. Still confused about speakers
  94. 5e3 low sound.
  95. Best Sounding FET for preamp input stage
  96. Acoustic guitar preamp build....hopefully!!
  97. Fender Frontman 212R distorting even on clean channel.
  98. Im looking for some help with channel switching
  99. Pin 4 Screen connection on 6L6GC PP Guitar amp drops B+
  100. Fender 5F1 champ build.
  101. Build advice, JTM45 or Fender Deluxe
  102. Overheated tube socket?
  103. Suggestions for preamp ........
  104. Tube Guitar Amp Building Classes
  105. Ampage.org
  106. Champ 5F1 buzz/hum problem.
  107. JTM45 Metro Amp Mod Question
  108. Transforming 4 track Minidisc recorder to preamp/mixer for studio recording
  109. Clipping Diodes TS9
  110. Dynavox VR70
  111. Mesa Boogie Mark II c+ schematic & experience
  112. Bass Amp Idea
  113. Line out to instrument input level attenuation
  114. Problem with my ampeg portaflex pf-350
  115. Vintage Elka Reverb III
  116. Will these replacements work (OPAMPS)?
  117. JTM45 Metro amp problem
  118. can my amp cope?
  119. Electret Microphone Circuit for Accordion
  120. anyone tryed 6V6 pp ultra linear
  121. Quilter Amps
  122. Taming highs with a capacitor?
  123. 1963 Moody Tube Amp
  124. Could I get a bit of QC on my amp design?
  125. Fender early 1960s Bandmaster Recap
  126. Modular Tube Preamps/Power Amps/Cabinets
  127. largest plate voltage on a 12AX7 question
  128. tube amp direct line out
  129. Clean and Dirty switch in Single Channel Amp?
  130. Marshall bass 100 solid state transmitter
  131. Designing a battery guitar amplifier
  132. EL84 driver stage
  133. New amp build grounding question
  134. Basic question about electron flow to tube grid
  135. Guitar Grounding (Metal Control Plate)
  136. SS Bass Preamp Pedal - Some Questions
  137. Has anyone used London Power scaling
  138. Dynacord MV120 advice?
  139. Advice on < 30 watt EL84 new build
  140. Rack Compressor LED Bar Display Troubleshooting
  141. DC Cathode Follower Mixer
  142. battery amplifier, searching an IC
  143. Silvertone 1482 Capacitor replacement
  144. WEM Dominator MK3 amplifier. Lamp and Transistor Enquiry
  145. 12au7 driver
  146. Hammond AO-39 info needed
  147. Chinese Iron
  148. Klark Teknik DN22 EQ
  149. what amps do i need for this speaker config?!?
  150. line out controller
  151. Old Japanese Tube Amp Ground Wiring Woes
  152. Transformer for guitar pre balanced output
  153. Quick Channel Switch Design Question
  154. Replace EL34 in the powersection with MOSFET?
  155. 5F1 First Build Issues, need guidance
  156. solid state amplifier making noise!
  157. Single 2n3904 Channel Switching Guitar Preamps, 5 circuit ideas shown, please comment
  158. Roland JC120 Distortion
  159. Field test a S.S. rectifier
  160. hybrid output
  161. Is this design ok? Switch from distorted to clean channel on Electra Type Distortion
  162. Traynor YBA-1a Bias issue
  163. Is asymmetric clipping in distortion ok for your amp?
  164. Advice on Guitar Amp, should I get rid of it
  165. Stand-by Switch reduce their useful life
  166. Ibanez TSA-15H Power cuts out
  167. loud hum from amp
  168. Mesa Boogie Nomad 45 tube amp repair question
  169. Oscillation in Tube Guitar Amps
  170. Point-to-point wiring vs. PCBs
  171. Help! Bass amp making airplane noise. Unresponsive otherwise
  172. NOT the best distortion, but perhaps the simplest.
  173. Roland Jazz Chorus 120
  174. does anyone know of a el86/6cw5 quad amp ?
  175. SE10 by ORGASM MACHINES (single ended el34 guitar tube amp)
  176. Marshall 3520 Bass Amp -- Capacitor Question
  177. Earphones
  178. How to build a simple, low power guitar amp
  179. Dynacord Echocord S61, S62 and S65
  180. peculiar PA tube amp conversion
  181. Dynamic Clipping Using a Transistor for Guitar Distortion
  182. Conceptual question about switching tonestacks in circuit. Channel switching amp
  183. Sovtek EL84M
  184. Marshall Ministack great with stock speaks rubbish with anything else! Why?
  185. Puzzled about input impedance of this guitar distortion circuit
  186. LND150 effects loop not working properly, need help.
  187. AX84 - Cathode resistor replacment
  188. Onboard bass preamp, please help with schematic
  189. Princeton tremolo + bias setting question
  190. 2880 EHX trig out from leds
  191. Good reasonable cost mikes for live recording?
  192. Small 10k:10k Input transformers for Pultec
  193. Phonic PWA-2400, protection circuit malfunction.
  194. FRFR stage monitor for guitar modeling
  195. Home-made tube amp ghost notes?
  196. Bass tube preamp (Alembic F2-B + full EQ + XLR + tuner)
  197. Peavey CS 800 heating
  198. volume and tone for low Z pickup .....
  199. o.c. elect. cascade reverb tank.
  200. Amp Conversion .
  201. schematic daisy rock girl guitar scamp
  202. First Tube amp build, Need a little help
  203. phase splitter for KT88
  204. 1967 blackface bandmaster output transformer fire
  205. Thomas organ guts for amp build?
  206. Troubleshooting Marshall VS100 without powering up?
  207. Old Tube Intercom Amp
  208. Opinion on preamp design channel switching from Marshall to Fender Tonestack
  209. How do you get the values? Basic design questions.
  210. Super Squirrel Monkey - First from-scratch tube amp build, first guitar amp build
  211. Tube stage assignments on my Princeton AA964 clone
  212. Mysterious (haunted?) screeching amp, Marshall, maybe?
  213. DC Coupled Cathode Follower Questions
  214. Issue with Laney GH100L
  215. Disadvantages !
  216. Bassman Hum Help
  217. Smoking bridge rectifier in Valve Jr filament PS (link to schematic)
  218. guitar -> SS line in
  219. Shielded Wire for Outboard Inputs?
  220. 2 sets of wires going into speaker
  221. B-15 build
  222. output transformer Math "a little help with ma homework plz"
  223. Repairing Peavey PV-8.5c - Transistor substitute
  224. Tube recommendations for bass amp
  225. Hohner Concertophon IV and Hum
  226. D I Y .
  227. Amp trouble
  228. Critique of Phonograph Conversion Amp Plans
  229. Schematic for my ridiculous amp is partly complete.
  230. Behringer Guitar Amp
  231. Hiwatt custom tranformer 70v bias question
  232. Guitar amp/cab build questions
  233. Leslie horn on top a lowrey organ mod.
  234. How much current gain do I need for a guitar amp build?
  235. Reverb drive ckt using STF3NK80Z
  236. 6n7 dual triode output
  237. Accuracy in building an electric guitar?
  238. ~150w Marshall build questions
  239. How to include a feedback control knob in this spring reverb system?
  240. which one? accutronics or bitcom digital reverb
  241. A 6L6 Champ with 6C8 preamp
  242. fender mustang 2
  243. Euphoric valve distortion for synths!
  244. Dual Jack Inputs without the HI-LO effect? Fender / Marshall
  245. Rivera M60
  246. Built a reverb tank drive/recovery circuit - dry sound leakage
  247. Class A SE Guitar Amp Design
  248. Fender amp head cabinet question
  249. Vox AC4C1-BL amp.
  250. Ground problem! Noise disappear when i touch the chassis

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