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  1. Faulty JVC MX-GC5
  2. NAD 1300 - Problem with static
  3. voltage doubler for TPS7A4700
  4. Ultra Low noise voltage regulator IC till 80Volts?
  5. NAD amplifier disabling Power Envelope circuit
  6. STR-DN1000 power-up problem
  7. What solved the problem...
  8. Kenwood Ka-2600
  9. Rotel RA840BX service
  10. Finishing a custom made power amp...
  11. aqvox + primare
  12. NAD 3300 Amplifier repair question
  13. Proton AA1660 switch issue
  14. 2sk1058 for class A what should be the max heat dissipation preferred?
  15. need help with crest 2500 poweramp
  16. (ask) ZCA 2sk1058 mosfet amplifier
  17. Threshold SA-1 keep main fuse blown
  18. Two audio schematics-comment?!
  19. SuperA Class AMP "Nataly EA2012"
  20. V.2012 PRO. Composite Audio amplifier
  21. 900W Class H Power Amplifier
  22. PCB for audio ammplifier with mj15003/mj15004
  23. Creek 4240 Volume / channel issue
  24. Peavey PV-500 schenmatics.
  25. output inductor placement idea, does it work
  26. Help with ocillating amplifier !!
  27. What headphone amp to build?
  28. The David N.J.White 100W MOSFET amplifier
  29. "Dumb" Krell Class A Question
  30. Quad 306, an underrated masterpiece?
  31. Yamaha PC-2002M
  32. Marantz 1090 shorted output stage
  33. Audiophiler Capacitor Red compared to any Mundorf Supreme as coupling cap?
  34. curious observation re: Hafler TA-1100
  35. LME49810 minimum safe working voltage not according to the datasheet
  36. Experience with Savoy G3
  37. Rotel RA-840BX3 repair?
  38. Help hooking up transformer
  39. Hafler dh200 2sk134 mosfet transistor
  40. pioneer sx1010 zener diode voltage
  41. Adcom GFA 5400 questions
  42. Measuring Power Amp Output Impedance
  43. Skytec PA-200, smoke and volume not working
  44. NAD 7155 Preamp help needed
  45. cyrus 8v2 with buzz after 2 hours
  46. Wilson-Cfp by Stee
  47. Problem with DC offset and stability
  48. Sansui AU-517 Capacitor Recommendation
  49. Acurus RL11
  50. Kenwood KR-V55r DC present on both channels. A lot.
  51. Pioneer sx 1010 power problem
  52. Onkyo M-504 Upgrade to LED lights? Help!
  53. Subwoofer amp - too much bass!
  54. Help to fix C-Audio GB402 Amplifier
  55. NAD C320 fixed (another protection circuit problem)
  56. If replacing differential input pair; also replace current source transistor?
  57. One single output pair per channel is a good thing ?
  58. Quad 99 system transformer hum
  59. calculating the resistor & capacitor values in class a amplifier
  60. Lots of noise when input is unconnected
  61. Mosfet source follower output impedence
  62. Harman/Kardon 430 - Need help with strange powerup noise
  63. Gallien Krueger 800RB Hi Channel Problem
  64. Transistor heatsink question
  65. lme49810 DC servo circuit.
  66. 300w power amp
  67. What can cause noise in this design?
  68. SYBELIUS 3 plus - ultimate high design
  69. Help repairing Sub AMP
  70. Sansui Diamond Differential PA Simulation and possible build
  71. Krell KV300i input selector board removal
  72. Replacment transistor for hitachi 2sc2b1 ? Its in a Sansui AU 555 A
  73. Yamaha M45 low pwr issue pretty interesting.
  74. Brocken amp..noise like thunder
  75. Rails Decoupled SE Amplifier
  76. DVD/CD output and power amp input specification.
  77. Bose 550 Receiver Has DC on outputs
  78. AEQ model 250 schematic
  79. Transformer coupling instead of cap?
  80. Krell 200S
  81. HH Electronic VX-150 MosFet
  82. Power supply for power amp.
  83. Making a VCO. Design help needed.
  84. DoZ in a Hafler 220? Or. . .?
  85. Roland RE-201 tapeecho improvements
  86. Burmester 933 mk2 Clone from Jims Audio
  87. Harman-Kardon hk6200 repair
  88. Needed - Service Manual For Luxman L-110
  89. Powering front end of amplifier
  90. New Project: The Silver Fox
  91. Dual Diff Amp Question
  92. What can I build with these? 4 pairs of 2SC5200/2SA1943
  93. LM 3915 mode change
  94. Pioneer SX-1080, after re-cap problem w. center voltage & idle current
  95. CFA Enhancements
  96. Peavey PV900 schematics
  97. Power amp ideas.
  98. Got taken on yasmaha m45
  99. Marlboro PA chip conversion question
  100. Diagrams required
  101. Another 100W hifi amp
  102. Repair help needed - Creek Destiny
  103. Power Supply for PGA2310 project
  104. yamaha b1 amp
  105. Parasound HCA-800II and C/PT-600
  106. Peavey Delta Blues Reverb Mod
  107. Help, In need of Service Manual for Cambridge Azur 640A V2
  108. NAD 7250PE Repair From Driving a Shorted Voice Coil?
  109. Need help with college project - Trying to build a 3 stage amp but I'm lost
  110. Digital Attenuator for Balanced Lines?
  111. Onkyo R1 AV amp
  112. GFA 5503 Bias adjustment
  113. Onkyo Dynamic Four 800 - Schematic for modification
  114. yamaha A-1020 amp
  115. Changing my old VFA designs into ONE-BEND CFA plus Current Drives
  116. H/K Citation Sixteen Parts
  117. Rotel Rb890 hum on one Channel
  118. Sansui AU555-A D001/D002 replacment diode?
  119. Diamond Wilson CFP - Roger Amp
  120. DIY Buffer Pre Amplifier with phono stage
  121. Single ended class a build. noob question
  122. Experimentations on Regulators
  123. Perfect Stranger - Innovative Amplifier
  124. Pioneer amp board with IC drivers.
  125. Technics SA-80 distorted right channel
  126. Please help educate - T300 & VSSA level matching
  127. transformer amplifier zero feedback
  128. What do these resistors do? :(
  129. Watercooled HEXFET Power Amplifier
  130. A simple question about performance
  131. bridge adapter
  132. CROWN DC-300A SERIES II RESTORATION
  133. OLDER PIONEER PREMIER Specific Amp line
  134. Resurrecting a BGW 750B
  135. Op-amp swapping MC330789 to OPA627
  136. Sudgen p28 Bias current
  137. Rotel service manual biasing...
  138. My Blameless
  139. Amber Series 70 Fuses
  140. Bi-Pak AL60
  141. yamaha M35 amp led meter
  142. Yamaha M45 amp led circuit schematic
  143. Does this amplified topology have a name
  144. The affect of mismatched impedance
  145. Acurus A150
  146. trace acoustic ta100r repair help
  147. New to forum - Buzzing noise
  148. resistor colour code
  149. help!!!!
  150. Arcam Alpha 10 overheating issues
  151. TEAC AG 4200 relays?
  152. Unique CFA 120/230W amp
  153. Direct NFB Pure Amplifier 2
  154. Crimson CS 620D
  155. Sansui 350
  156. Driving a 4-8R speaker with a single transistor Class A amp?
  157. Turbo 225 amplifier (SGS)
  158. excelinear 2014
  159. CFP OUTPUT 100W*2 MX100 MY design
  160. Amp starts humming when volume pot is attached
  161. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  162. Second opinions on balanced inputs
  163. Availability of "current-drive" amplifiers as commercial products
  164. Amp with unfamiliar input stage - DC offset problem
  165. 2SJ118/2SK413 schematics
  166. Making a bipolar electrolytic capacitor
  167. Sap Transistors?
  168. Twisting transformer secondary's
  169. Adcom gfa-555ii killed my speakers
  170. Crown DC-300A No Mono/Dual Switch
  171. Repairing surround channels on a Marantz RS3559
  172. Behringer GM110
  173. can I have 5 m cable, quad 35 to 405 amp
  174. NAD 3125 Circuit Diagram
  175. pioneer stereo reciever sx-1080
  176. common value of output stage noise in uV?
  177. Dynacord L2400 output board schematic
  178. Bryston 3B Restoration problems
  179. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  180. Prototype Printed Circuit Board vendors
  181. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  182. Musical Fidelity A1000
  183. Parasound 2250 Amp Schematics?
  184. Crown Macro Reference Bias calibration
  185. DC blocking caps in modern amplifiers?
  186. Replacing capacitors in the tuner area
  187. Source of 680nF 2% caps.
  188. first amplifier build. will my schematic work?
  189. kenwood basic M2 problem
  190. Looking for Soundcraft Spirit FX8 Schematic/Info
  191. Which combinations of transistors should thermally track
  192. Technics SA-300: dead FM tuner
  193. Krell KMA-160 schematic and biasing info needed
  194. MCU from NAD T-752
  195. gemini vintage amp need info please
  196. Help with TeddyReg
  197. NAD S300 normal operating temperature?
  198. Harmon Kardon HK650
  199. MARK LEVINSON 33X series caps..Whats best???
  200. Adding a second input channel to my diy amp. how to?
  201. Circuit for a 2.1 system?
  202. Bush Amplifier Distorted.
  203. Yamaha CA 510 Meter lights
  204. Amps' power - which is real the bottleneck ?
  205. Sansui AU 555a One dead channel ? No power ?
  206. Pioneer SA-610 mods to improve sound quality
  207. Honeybadger or Gainclone?
  208. It seems I only use 1W of amp power.. Can it be right?
  209. Increasing slew rate and stability
  210. The most bizzare problem I have come across
  211. Aragon 8008 x 3 blew my woofers?
  212. Phase Linear
  213. Yamaha M-85 Bias Voltage Does Not Increase In "Auto A" Switch Position
  214. Rather simple high quality reference amp (~200W @ 4 ohm, VFA)
  215. What is Monaural, Dual mono, stereo in fact?
  216. Why does CFP output require much less bias than EF?
  217. No Input Select at Kenwood's Integrated Amp A-1001
  218. Quad 405 - DCD–Mod4 (Keith Snook)
  219. output transformer for multiple amps
  220. Connecting amplifier chasis to earth ground, but not amplifier ground
  221. QSC1700
  222. Pioneer SA-610 - bypass the Pre-amp stage?
  223. Upgrading Transistors?
  224. Toroid Field being picked up by input transformer. Way to block this?
  225. free bryston 4b resurrection
  226. 2SA798
  227. universal Jfet source follower
  228. Amp advice prior to purchase -
  229. Which amp shall I build?
  230. Audio transformer (LT700) behaviour [newb]
  231. homemade amplifier
  232. Sansui R-70 bias
  233. Kenwood KA5700
  234. A question about a Linar 10 amp
  235. OP Amp oscillator sine wave too sharp
  236. tectronic SA-535
  237. A dive into the past
  238. Hafler 9303 transformer
  239. Debug my hum
  240. Transistors
  241. Yamaha rx-v373 making me pull my hair out!
  242. Servicing an amp: fuses, regulators, emitter resistors
  243. Pro Amplifier hum
  244. Pioneer Power Amplifier GM-6300T, No Output
  245. Storage of a vintage receiver
  246. project idea. custom amp board in old receiver
  247. Strange problems with transistors
  248. Newbie working with a IRS2092
  249. Ampzilla 2000
  250. Simple repair for a subwoofer amplifier? (ASW3000)

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