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  1. Transistor heatsink question
  2. lme49810 DC servo circuit.
  3. 300w power amp
  4. What can cause noise in this design?
  5. SYBELIUS 3 plus - ultimate high design
  6. Help repairing Sub AMP
  7. Sansui Diamond Differential PA Simulation and possible build
  8. Krell KV300i input selector board removal
  9. Replacment transistor for hitachi 2sc2b1 ? Its in a Sansui AU 555 A
  10. Yamaha M45 low pwr issue pretty interesting.
  11. Brocken amp..noise like thunder
  12. Rails Decoupled SE Amplifier
  13. DVD/CD output and power amp input specification.
  14. Bose 550 Receiver Has DC on outputs
  15. AEQ model 250 schematic
  16. Transformer coupling instead of cap?
  17. Krell 200S
  18. HH Electronic VX-150 MosFet
  19. Power supply for power amp.
  20. Making a VCO. Design help needed.
  21. DoZ in a Hafler 220? Or. . .?
  22. Burmester 933 mk2 Clone from Jims Audio
  23. Harman-Kardon hk6200 repair
  24. Needed - Service Manual For Luxman L-110
  25. Powering front end of amplifier
  26. New Project: The Silver Fox
  27. Dual Diff Amp Question
  28. What can I build with these? 4 pairs of 2SC5200/2SA1943
  29. LM 3915 mode change
  30. Pioneer SX-1080, after re-cap problem w. center voltage & idle current
  31. CFA Enhancements
  32. Power amp ideas.
  33. Got taken on yasmaha m45
  34. Marlboro PA chip conversion question
  35. Diagrams required
  36. Another 100W hifi amp
  37. Repair help needed - Creek Destiny
  38. Power Supply for PGA2310 project
  39. yamaha b1 amp
  40. Parasound HCA-800II and C/PT-600
  41. Help, In need of Service Manual for Cambridge Azur 640A V2
  42. NAD 7250PE Repair From Driving a Shorted Voice Coil?
  43. Need help with college project - Trying to build a 3 stage amp but I'm lost
  44. Digital Attenuator for Balanced Lines?
  45. Onkyo R1 AV amp
  46. GFA 5503 Bias adjustment
  47. Onkyo Dynamic Four 800 - Schematic for modification
  48. yamaha A-1020 amp
  49. Changing my old VFA designs into ONE-BEND CFA plus Current Drives
  50. H/K Citation Sixteen Parts
  51. Rotel Rb890 hum on one Channel
  52. Sansui AU555-A D001/D002 replacment diode?
  53. Diamond Wilson CFP - Roger Amp
  54. DIY Buffer Pre Amplifier with phono stage
  55. Single ended class a build. noob question
  56. Experimentations on Regulators
  57. Perfect Stranger - Innovative Amplifier
  58. Pioneer amp board with IC drivers.
  59. Technics SA-80 distorted right channel
  60. Please help educate - T300 & VSSA level matching
  61. transformer amplifier zero feedback
  62. What do these resistors do? :(
  63. Watercooled HEXFET Power Amplifier
  64. A simple question about performance
  65. bridge adapter
  66. CROWN DC-300A SERIES II RESTORATION
  67. OLDER PIONEER PREMIER Specific Amp line
  68. Resurrecting a BGW 750B
  69. Op-amp swapping MC330789 to OPA627
  70. Sudgen p28 Bias current
  71. Rotel service manual biasing...
  72. My Blameless
  73. Amber Series 70 Fuses
  74. Bi-Pak AL60
  75. yamaha M35 amp led meter
  76. Yamaha M45 amp led circuit schematic
  77. Does this amplified topology have a name
  78. The affect of mismatched impedance
  79. Acurus A150
  80. trace acoustic ta100r repair help
  81. New to forum - Buzzing noise
  82. resistor colour code
  83. help!!!!
  84. Arcam Alpha 10 overheating issues
  85. TEAC AG 4200 relays?
  86. Unique CFA 120/230W amp
  87. Direct NFB Pure Amplifier 2
  88. Crimson CS 620D
  89. Sansui 350
  90. Driving a 4-8R speaker with a single transistor Class A amp?
  91. Turbo 225 amplifier (SGS)
  92. excelinear 2014
  93. CFP OUTPUT 100W*2 MX100 MY design
  94. Amp starts humming when volume pot is attached
  95. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  96. Second opinions on balanced inputs
  97. Availability of "current-drive" amplifiers as commercial products
  98. Amp with unfamiliar input stage - DC offset problem
  99. 2SJ118/2SK413 schematics
  100. Making a bipolar electrolytic capacitor
  101. Sap Transistors?
  102. Twisting transformer secondary's
  103. Adcom gfa-555ii killed my speakers
  104. Crown DC-300A No Mono/Dual Switch
  105. Repairing surround channels on a Marantz RS3559
  106. can I have 5 m cable, quad 35 to 405 amp
  107. NAD 3125 Circuit Diagram
  108. pioneer stereo reciever sx-1080
  109. common value of output stage noise in uV?
  110. Dynacord L2400 output board schematic
  111. Bryston 3B Restoration problems
  112. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  113. Prototype Printed Circuit Board vendors
  114. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  115. Musical Fidelity A1000
  116. Parasound 2250 Amp Schematics?
  117. Crown Macro Reference Bias calibration
  118. DC blocking caps in modern amplifiers?
  119. Replacing capacitors in the tuner area
  120. Source of 680nF 2% caps.
  121. first amplifier build. will my schematic work?
  122. kenwood basic M2 problem
  123. Looking for Soundcraft Spirit FX8 Schematic/Info
  124. Which combinations of transistors should thermally track
  125. Technics SA-300: dead FM tuner
  126. Krell KMA-160 schematic and biasing info needed
  127. MCU from NAD T-752
  128. gemini vintage amp need info please
  129. Help with TeddyReg
  130. NAD S300 normal operating temperature?
  131. Harmon Kardon HK650
  132. MARK LEVINSON 33X series caps..Whats best???
  133. Adding a second input channel to my diy amp. how to?
  134. Circuit for a 2.1 system?
  135. Bush Amplifier Distorted.
  136. Yamaha CA 510 Meter lights
  137. Amps' power - which is real the bottleneck ?
  138. Sansui AU 555a One dead channel ? No power ?
  139. Pioneer SA-610 mods to improve sound quality
  140. Honeybadger or Gainclone?
  141. It seems I only use 1W of amp power.. Can it be right?
  142. Increasing slew rate and stability
  143. The most bizzare problem I have come across
  144. Aragon 8008 x 3 blew my woofers?
  145. Phase Linear
  146. Yamaha M-85 Bias Voltage Does Not Increase In "Auto A" Switch Position
  147. Rather simple high quality reference amp (~200W @ 4 ohm, VFA)
  148. What is Monaural, Dual mono, stereo in fact?
  149. Why does CFP output require much less bias than EF?
  150. No Input Select at Kenwood's Integrated Amp A-1001
  151. Quad 405 - DCD–Mod4 (Keith Snook)
  152. output transformer for multiple amps
  153. Connecting amplifier chasis to earth ground, but not amplifier ground
  154. QSC1700
  155. Pioneer SA-610 - bypass the Pre-amp stage?
  156. Upgrading Transistors?
  157. Toroid Field being picked up by input transformer. Way to block this?
  158. free bryston 4b resurrection
  159. 2SA798
  160. universal Jfet source follower
  161. Amp advice prior to purchase -
  162. Which amp shall I build?
  163. Audio transformer (LT700) behaviour [newb]
  164. homemade amplifier
  165. Sansui R-70 bias
  166. Kenwood KA5700
  167. A question about a Linar 10 amp
  168. OP Amp oscillator sine wave too sharp
  169. tectronic SA-535
  170. A dive into the past
  171. Hafler 9303 transformer
  172. Debug my hum
  173. Transistors
  174. Yamaha rx-v373 making me pull my hair out!
  175. Servicing an amp: fuses, regulators, emitter resistors
  176. Pro Amplifier hum
  177. Pioneer Power Amplifier GM-6300T, No Output
  178. Storage of a vintage receiver
  179. project idea. custom amp board in old receiver
  180. Strange problems with transistors
  181. Newbie working with a IRS2092
  182. Ampzilla 2000
  183. Simple repair for a subwoofer amplifier? (ASW3000)
  184. Speaker Impedance - Class A Current
  185. 2SK216/2SJ79 Spice models for Multisim?
  186. News. Three-band repeater with a crossover in the economy class A.
  187. Commercial Solid State Amps with jumper controlled Modes "without NFB" and "with NFB"
  188. Yamaha CA 510
  189. KSA-250 changing mains voltage
  190. "Vintage" Rotel RX-875 Troubleshooting
  191. Luxman L100 muting circuit
  192. Replacement remote for HK6350R
  193. SS amplifier kit equivalent to Dynaco ST70?
  194. Amplifier Problems
  195. Thermal switch?
  196. bad clipping
  197. OPA2604: Worthwhile using better regs than LM317/337?
  198. B&K cs-115 preamp help
  199. Kenwood Model Eleven GX Bulb Replacement
  200. Hiraga woodfront.
  201. Strap a Cap
  202. Which amplifier kit to build
  203. Encapsulated insulated hex freds
  204. need help finding a replacement for a JRC 074D quade fet op amp
  205. Yamaha RX-V390 - Circuit Protection
  206. arcam alpha 10
  207. autobias via temperature and LUT
  208. RAISERAMP - a special transformer based
  209. Speaker relays
  210. 4 stage amplifier instabilities
  211. 2SB654 = MJ2955? N0!
  212. Marantz pm-64 mk2 missing factory caps ?
  213. gfa-555 ii transistors
  214. Esound integrated amp
  215. Marantz PM-66SE KI - bin or repair?
  216. Invention for bias stability
  217. Hybrid Repeater in economy class A.
  218. Backwards WILSON current mirror?
  219. separate psu chassis for SS amp ?
  220. Linn Intek noisy channel
  221. Phase problem/question
  222. Yamaha CA-610II
  223. Threshold Cas-2
  224. my new amp b.m.c cs2
  225. overdriven OP
  226. Luxman L-450 Transistor Getting Hot
  227. Marantz pm-64 mk2
  228. Transrotary Input Selector anti oxidation Yamaha AX, Pioneer A series type
  229. Amplifier Frequency Turnover. When does it apply?!
  230. Amplifier Frequency Turnover. When does it apply?!
  231. preamp low volume and humming - Krell KRC-2
  232. polyester caps for power supply Any good?
  233. Experiencing a mysterious hum in a Parasound HCA-2200 II.
  234. Bridge Amplifier
  235. Improved OP
  236. NAD 3020 preamp channel broken
  237. Powered Subwoofer won't turn on...Please help!
  238. EXCELINEAR MKII
  239. Is it possible to bridge two subwoofer plate amps between circuit boards??
  240. mosfet question.
  241. Leak Delta 70
  242. Slightly abnormal question about a shaker
  243. I am a newbie and need help on the value of the potentiometer
  244. My CFA project
  245. SIT Transistors for audio ?
  246. rf problem
  247. Building amp small series...
  248. A stupid question about using capacitors to clean pre amp rails
  249. Speakers pop sounds (spikes) when fridge kicks in,Arcam Alpha 3
  250. Need help figuring out/finding a rotary switch

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