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  1. Kenwood KR-V55r DC present on both channels. A lot.
  2. Pioneer sx 1010 power problem
  3. Onkyo M-504 Upgrade to LED lights? Help!
  4. Subwoofer amp - too much bass!
  5. Help to fix C-Audio GB402 Amplifier
  6. NAD C320 fixed (another protection circuit problem)
  7. If replacing differential input pair; also replace current source transistor?
  8. One single output pair per channel is a good thing ?
  9. Quad 99 system transformer hum
  10. calculating the resistor & capacitor values in class a amplifier
  11. Lots of noise when input is unconnected
  12. Mosfet source follower output impedence
  13. Harman/Kardon 430 - Need help with strange powerup noise
  14. Gallien Krueger 800RB Hi Channel Problem
  15. Transistor heatsink question
  16. lme49810 DC servo circuit.
  17. 300w power amp
  18. What can cause noise in this design?
  19. SYBELIUS 3 plus - ultimate high design
  20. Help repairing Sub AMP
  21. Sansui Diamond Differential PA Simulation and possible build
  22. Krell KV300i input selector board removal
  23. Replacment transistor for hitachi 2sc2b1 ? Its in a Sansui AU 555 A
  24. Yamaha M45 low pwr issue pretty interesting.
  25. Brocken amp..noise like thunder
  26. Rails Decoupled SE Amplifier
  27. DVD/CD output and power amp input specification.
  28. Bose 550 Receiver Has DC on outputs
  29. AEQ model 250 schematic
  30. Transformer coupling instead of cap?
  31. Krell 200S
  32. HH Electronic VX-150 MosFet
  33. Power supply for power amp.
  34. Making a VCO. Design help needed.
  35. DoZ in a Hafler 220? Or. . .?
  36. Roland RE-201 tapeecho improvements
  37. Burmester 933 mk2 Clone from Jims Audio
  38. Harman-Kardon hk6200 repair
  39. Needed - Service Manual For Luxman L-110
  40. Powering front end of amplifier
  41. New Project: The Silver Fox
  42. Dual Diff Amp Question
  43. What can I build with these? 4 pairs of 2SC5200/2SA1943
  44. LM 3915 mode change
  45. Pioneer SX-1080, after re-cap problem w. center voltage & idle current
  46. CFA Enhancements
  47. Peavey PV900 schematics
  48. Power amp ideas.
  49. Got taken on yasmaha m45
  50. Marlboro PA chip conversion question
  51. Diagrams required
  52. Another 100W hifi amp
  53. Repair help needed - Creek Destiny
  54. Power Supply for PGA2310 project
  55. yamaha b1 amp
  56. Parasound HCA-800II and C/PT-600
  57. Peavey Delta Blues Reverb Mod
  58. Help, In need of Service Manual for Cambridge Azur 640A V2
  59. NAD 7250PE Repair From Driving a Shorted Voice Coil?
  60. Need help with college project - Trying to build a 3 stage amp but I'm lost
  61. Digital Attenuator for Balanced Lines?
  62. Onkyo R1 AV amp
  63. GFA 5503 Bias adjustment
  64. Onkyo Dynamic Four 800 - Schematic for modification
  65. yamaha A-1020 amp
  66. Changing my old VFA designs into ONE-BEND CFA plus Current Drives
  67. H/K Citation Sixteen Parts
  68. Rotel Rb890 hum on one Channel
  69. Sansui AU555-A D001/D002 replacment diode?
  70. Diamond Wilson CFP - Roger Amp
  71. DIY Buffer Pre Amplifier with phono stage
  72. Single ended class a build. noob question
  73. Experimentations on Regulators
  74. Perfect Stranger - Innovative Amplifier
  75. Pioneer amp board with IC drivers.
  76. Technics SA-80 distorted right channel
  77. Please help educate - T300 & VSSA level matching
  78. transformer amplifier zero feedback
  79. What do these resistors do? :(
  80. Watercooled HEXFET Power Amplifier
  81. A simple question about performance
  82. bridge adapter
  83. CROWN DC-300A SERIES II RESTORATION
  84. OLDER PIONEER PREMIER Specific Amp line
  85. Resurrecting a BGW 750B
  86. Op-amp swapping MC330789 to OPA627
  87. Sudgen p28 Bias current
  88. Rotel service manual biasing...
  89. My Blameless
  90. Amber Series 70 Fuses
  91. Bi-Pak AL60
  92. yamaha M35 amp led meter
  93. Yamaha M45 amp led circuit schematic
  94. Does this amplified topology have a name
  95. The affect of mismatched impedance
  96. Acurus A150
  97. trace acoustic ta100r repair help
  98. New to forum - Buzzing noise
  99. resistor colour code
  100. help!!!!
  101. Arcam Alpha 10 overheating issues
  102. TEAC AG 4200 relays?
  103. Unique CFA 120/230W amp
  104. Direct NFB Pure Amplifier 2
  105. Crimson CS 620D
  106. Sansui 350
  107. Driving a 4-8R speaker with a single transistor Class A amp?
  108. Turbo 225 amplifier (SGS)
  109. excelinear 2014
  110. CFP OUTPUT 100W*2 MX100 MY design
  111. Amp starts humming when volume pot is attached
  112. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  113. Second opinions on balanced inputs
  114. Availability of "current-drive" amplifiers as commercial products
  115. Amp with unfamiliar input stage - DC offset problem
  116. 2SJ118/2SK413 schematics
  117. Making a bipolar electrolytic capacitor
  118. Sap Transistors?
  119. Twisting transformer secondary's
  120. Adcom gfa-555ii killed my speakers
  121. Crown DC-300A No Mono/Dual Switch
  122. Repairing surround channels on a Marantz RS3559
  123. Behringer GM110
  124. can I have 5 m cable, quad 35 to 405 amp
  125. NAD 3125 Circuit Diagram
  126. pioneer stereo reciever sx-1080
  127. common value of output stage noise in uV?
  128. Dynacord L2400 output board schematic
  129. Bryston 3B Restoration problems
  130. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  131. Prototype Printed Circuit Board vendors
  132. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  133. Musical Fidelity A1000
  134. Parasound 2250 Amp Schematics?
  135. Crown Macro Reference Bias calibration
  136. DC blocking caps in modern amplifiers?
  137. Replacing capacitors in the tuner area
  138. Source of 680nF 2% caps.
  139. first amplifier build. will my schematic work?
  140. kenwood basic M2 problem
  141. Looking for Soundcraft Spirit FX8 Schematic/Info
  142. Which combinations of transistors should thermally track
  143. Technics SA-300: dead FM tuner
  144. Krell KMA-160 schematic and biasing info needed
  145. MCU from NAD T-752
  146. gemini vintage amp need info please
  147. Help with TeddyReg
  148. NAD S300 normal operating temperature?
  149. Harmon Kardon HK650
  150. MARK LEVINSON 33X series caps..Whats best???
  151. Adding a second input channel to my diy amp. how to?
  152. Circuit for a 2.1 system?
  153. Bush Amplifier Distorted.
  154. Yamaha CA 510 Meter lights
  155. Amps' power - which is real the bottleneck ?
  156. Sansui AU 555a One dead channel ? No power ?
  157. Pioneer SA-610 mods to improve sound quality
  158. Honeybadger or Gainclone?
  159. It seems I only use 1W of amp power.. Can it be right?
  160. Increasing slew rate and stability
  161. The most bizzare problem I have come across
  162. Aragon 8008 x 3 blew my woofers?
  163. Phase Linear
  164. Yamaha M-85 Bias Voltage Does Not Increase In "Auto A" Switch Position
  165. Rather simple high quality reference amp (~200W @ 4 ohm, VFA)
  166. What is Monaural, Dual mono, stereo in fact?
  167. Why does CFP output require much less bias than EF?
  168. No Input Select at Kenwood's Integrated Amp A-1001
  169. Quad 405 - DCD–Mod4 (Keith Snook)
  170. output transformer for multiple amps
  171. Connecting amplifier chasis to earth ground, but not amplifier ground
  172. QSC1700
  173. Pioneer SA-610 - bypass the Pre-amp stage?
  174. Upgrading Transistors?
  175. Toroid Field being picked up by input transformer. Way to block this?
  176. free bryston 4b resurrection
  177. 2SA798
  178. universal Jfet source follower
  179. Amp advice prior to purchase -
  180. Which amp shall I build?
  181. Audio transformer (LT700) behaviour [newb]
  182. homemade amplifier
  183. Sansui R-70 bias
  184. Kenwood KA5700
  185. A question about a Linar 10 amp
  186. OP Amp oscillator sine wave too sharp
  187. tectronic SA-535
  188. A dive into the past
  189. Hafler 9303 transformer
  190. Debug my hum
  191. Transistors
  192. Yamaha rx-v373 making me pull my hair out!
  193. Servicing an amp: fuses, regulators, emitter resistors
  194. Pro Amplifier hum
  195. Pioneer Power Amplifier GM-6300T, No Output
  196. Storage of a vintage receiver
  197. project idea. custom amp board in old receiver
  198. Strange problems with transistors
  199. Newbie working with a IRS2092
  200. Ampzilla 2000
  201. Simple repair for a subwoofer amplifier? (ASW3000)
  202. Speaker Impedance - Class A Current
  203. 2SK216/2SJ79 Spice models for Multisim?
  204. News. Three-band repeater with a crossover in the economy class A.
  205. Commercial Solid State Amps with jumper controlled Modes "without NFB" and "with NFB"
  206. Yamaha CA 510
  207. KSA-250 changing mains voltage
  208. "Vintage" Rotel RX-875 Troubleshooting
  209. Luxman L100 muting circuit
  210. Replacement remote for HK6350R
  211. SS amplifier kit equivalent to Dynaco ST70?
  212. Amplifier Problems
  213. Thermal switch?
  214. bad clipping
  215. OPA2604: Worthwhile using better regs than LM317/337?
  216. B&K cs-115 preamp help
  217. Kenwood Model Eleven GX Bulb Replacement
  218. Hiraga woodfront.
  219. Strap a Cap
  220. Which amplifier kit to build
  221. Encapsulated insulated hex freds
  222. need help finding a replacement for a JRC 074D quade fet op amp
  223. Yamaha RX-V390 - Circuit Protection
  224. arcam alpha 10
  225. autobias via temperature and LUT
  226. RAISERAMP - a special transformer based
  227. Speaker relays
  228. 4 stage amplifier instabilities
  229. 2SB654 = MJ2955? N0!
  230. Marantz pm-64 mk2 missing factory caps ?
  231. Marshall 8100 buzz
  232. gfa-555 ii transistors
  233. Esound integrated amp
  234. Marantz PM-66SE KI - bin or repair?
  235. Invention for bias stability
  236. Hybrid Repeater in economy class A.
  237. Backwards WILSON current mirror?
  238. separate psu chassis for SS amp ?
  239. Linn Intek noisy channel
  240. Phase problem/question
  241. Yamaha CA-610II
  242. Threshold Cas-2
  243. my new amp b.m.c cs2
  244. overdriven OP
  245. Luxman L-450 Transistor Getting Hot
  246. Marantz pm-64 mk2
  247. Transrotary Input Selector anti oxidation Yamaha AX, Pioneer A series type
  248. Amplifier Frequency Turnover. When does it apply?!
  249. Amplifier Frequency Turnover. When does it apply?!
  250. preamp low volume and humming - Krell KRC-2

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