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  1. Ask for help... buffer add to curcuit with DC servo becomes unstable
  2. Custom Heatsink
  3. Marantz 2230 weirdness.
  4. TO-220 output transistors for power amp
  5. Best laser printer transparency for photo resist transfer?
  6. My own 80W/8R amplifier need help
  7. I need help on an SS design
  8. Sony STR-DE675 problem..
  9. super simple DC detect for balanced amp
  10. How to build a Hackernap ?
  11. Choice of nulling trimmer and slew rate with CA3140T Op-Amp
  12. Magnum IA 170 ....
  13. TL072 Upgrade
  14. Need Parasound DR40 Schematic
  15. What can I do with 2 AMP (nope not monos) ?
  16. AKG C414 B uls mysterious electrical noise problem
  17. Total no0b question on a Sony N80ES amp
  18. Schematic help! Take a look at this NAD 2600A diagram
  19. Repairing a Luxman l-410...
  20. Yamaha R9
  21. MJL3281 Vbe matching
  22. What is this amp, and what do you think of it?
  23. Amp Output Testing
  24. SIT 2SK82 Circlotron Power Buffer
  25. SECA Kit By Colin Wonfor
  26. Right channel not working properly on Technics amp
  27. Issues with Musical fidelity A1
  28. Yamaha RX-V793
  29. Crown XLS 802
  30. ever heard of Motorola 7151
  31. Powered Mixer on but no sound heat sink not getting hot
  32. Arcam FMJ A22 Flashing Red Power LED
  33. Improve a Rotel amp THD by 20dB!
  34. Onkyo A8700 Blowing fuse
  35. NAD 2600 will not turn on !
  36. Diy class a 5W amplifier
  37. Multi Channel Amplifier Power, Preamp and Digital Grouding
  38. Looking for service manual Para JC1's
  39. What this colors mean ?
  40. EV 2.0kw class H high rail oscillation?
  41. H-K 520 blowing power fuse
  42. Service manual BGW PS 3
  43. How powerful should an amplifier be?
  44. trying to find Crown's service theory pdf(odep)
  45. Potentiometer replacement for Sony TA FA 777 ES
  46. Onkyo TX-NR808 fault
  47. Aiwa amplifier with power supply electronic voltage switch?
  48. please help!DC voltage in AV400 amp output
  49. Please help Yamaha rx-1030 problem
  50. Help with a factory reset
  51. Crest CA-18; one channel died peacefully
  52. crackling noise Pioneer SA-8500
  53. P3A amp shutdown 'plop'
  54. Chinese made Kit solid state Amplifiers on Ebay
  55. Bass blocking cap at amp input
  56. Does the Crown K2 inject delay? How to test?
  57. Parasound HCA-1000a Refresh
  58. Need some help with an active system
  59. Power at 8ohm, 4 and 2....
  60. Pioneer sc-lx71 blowing fuses
  61. Volume potentiometer replacement,pins.
  62. Interesting bit on capacitors....
  63. Phase Linear 700b refurb and full complementary conversion
  64. Yamaha AX-630
  65. What kind of capacitors inside this ?
  66. Wharfedale SW150 Active Subwoofer help
  67. Single Supply Amp
  68. Dynaco Stereo 400 - suggested TLC?
  69. In your class AB designs generally where is your second pole?
  70. Need spice model for 2SA1163
  71. Amplifier
  72. What is responsible for "control" of loudspeakers?
  73. Harmon Kardon-870 no lights
  74. Dynaco ST-100? I would much appreciate any info on this model.
  75. reparing old amplifier tectronic sa 535
  76. Best PJFET for CCS?
  77. keep smokin transistor!!
  78. Audio Innovations Alto mk 1
  79. Add more inputs to vintage preamp?
  80. turn on pop noisy standby
  81. Mosfet hybrid offset issue
  82. Need help ns450 200 watts amp bias adjust
  83. Schematic for 2SK351 - Quasi?
  84. About op-amps use.
  85. Module amp build help
  86. Op-amp decoupling - best practice?
  87. Rotel RB-980BX schematic
  88. Crown Pro amp ground up refurbish?
  89. Rod Elliot P68 Output DC offset.
  90. Discrete Tandy/Realistic transistor amp: Thermistor?
  91. Miniature bulbs replacement rule?
  92. CRELL and Konzert Schematics
  93. SIT amp simmulation, 2SK79+2SK82 push-pull
  94. Any suggestions on who to upgrade HCA-3500
  95. Technics ampifiers put an end to it's disgusting reviews yes or no for it to be!
  96. jbl vrx 932LAP/918SP schematics needed
  97. Qsc 850 help
  98. TIP3055/TIP2955 ST semi wierd(please help)
  99. Assembling an HDMI to 5.1/7.1 system
  100. Would amp designers (e.g. Pass) replace old caps?
  101. calculating high-pass filter for these components
  102. Uneven slew rates, does it matter?
  103. Luxman L-85V
  104. Troubleshooting stereo amplifier
  105. Akai AA-V1500 Amplifier Repair Help
  106. L20 V9.2
  107. Biasing MJ2955 and 2N3055
  108. Adcom 565 mono block with strange issue
  109. Luxman L-510 capacitors?
  110. Is this another DC offset question?
  111. Amplifier Akai am-u33, powers on, but no sound
  112. transistor heat excess and upgrade components
  113. Building a Quad 306 Clone
  114. Basic Amplier Toubleshooting
  115. Luxman R-113 relay(?) issue
  116. Need spice model for 2SA1618 and 2SC4207
  117. Bogus amplifier
  118. Sugden A21a...hummy
  119. Speaker protection relay issue
  120. Bridging w/ Input Transformers?
  121. Why not use emitter coupled matched pairs instead of emitter resistors?
  122. Technics SU-2400
  123. BGW 750C Recap, help a newbie out?
  124. BPA200 LM4780 Board (Unfinished) Design
  125. Oliver bias set point for class AB power amps
  126. Magnetic field of brushless DC fan
  127. Buy or build?
  128. LeachAmp power up
  129. k10 power amplifier
  130. Protection relays
  131. Any other method of killing bandwidth of an amp besides a large compensation cap?
  132. New to the forums
  133. How close should the +/- rails mirror each other
  134. Uso de diodos MUR3060
  135. Help with my new "old" SS anp.
  136. Sansui G6000 clone BY Dx .... not mine, just something i have prepared to share
  137. CYRUS 6 Amplifier please help
  138. Back to back diodes at inputs of opamps
  139. Amplifier speakers relay: how to pop open the cap on them?
  140. Grounding (Power Vs Signal)
  141. Pioneer A400 Volume Pot Replacement
  142. LME49811 with KSA1381 as headphone amplifier 600ohm imp
  143. Counterpoint SA 20 Amp Blowing Main fuse
  144. Celestion 6000 system...
  145. HK Citation 16 (Not the A model)
  146. Using a line preamp to drive headphone
  147. Nad amplifier c 352 with pop sound from speakers?
  148. Dynaco - ST 400 PC-29 mods/upgrades
  149. Transformer Upgrade
  150. Thermaltrak Amplifier Project (assembling soon!)
  151. Tivoli Model One Problem
  152. AU-999 with new Caps still "pops"
  153. I would like a few ideas..
  154. Does change of high speed power transistor/rectifier increase the dynamic
  155. MX50SE LJM 2015
  156. offset won't zero
  157. Amp working but bulb tester glows
  158. KEC Transistor Data Sheets
  159. Why no fully differential circuits?
  160. Advice for Amplifier Bias
  161. Another variation to the MCA amplifier
  162. Need help powering up diy amp for the first time
  163. Replacement for 2SC2362
  164. Data sheet Sanyo STK0231
  165. 2 channel amp recommendations
  166. Just won a AB International 600LX, what to check first?
  167. Crown K2 repair project
  168. Pkn Xd6000 amp for B&C 18SW115 drives
  169. quad 405 amplifier and clone boards from China
  170. Lafayette Radio Int. Amplifier
  171. Interview at Hi-fi Answers
  172. Quad 34 preamp all lights on problem
  173. First discrete BJT Amp
  174. Input Coupling Capacitor
  175. Weird idea for a Quad 303 housing
  176. Looking for a good value pre-amp
  177. Example of CFP output stage with dual rails?
  178. AudioResearch D240 mkI or mkII
  179. Compensate Bias for DC offset?
  180. best Value in used high power amps?
  181. Bias and balance adjustment for Hafler DH-120
  182. Rotel RA 500
  183. Yamaha DSP-3070 vs Marantz PM6005/Simlar
  184. Recapping a Quad 303
  185. Amplifier Gain
  186. How much better is steel casework vs aluminium (aluminium) for shielding?
  187. NAD C370 dead?
  188. Spectral DMC-10 Repair Help
  189. Adcom GFA-5400 / Help please...
  190. Musical Fidelity B1 Overhaul
  191. Adcom 535 help.
  192. nad c370 loses right channel
  193. Leach based amplifier design
  194. HERE is the Entire Spectral DMC-6 Owners Manual
  195. TIP35C/36C quick help needed
  196. Transistors Substitute
  197. Can anyone identify the source of the problem?
  198. Dayton Amplifier
  199. the users of Kenwood KA2200 sigma drive indicator pls help
  200. what do you think of this design?
  201. What are these capacitors?
  202. SAE 310 Transistor replacement info
  203. QUAD 99 power amp
  204. Help troubleshooting yamaha ms400 please
  205. How to set bias on a vintage amp with all new trannies ?
  206. DC Servo DIY Kit for DCCancellation
  207. My new amp
  208. Opinion about PCB
  209. Threshold T400 repair, need help
  210. Luxman M-4000 problems
  211. What amp for this box ?
  212. Old grundig offset level
  213. Where to start when green
  214. Non Super Tramp Trace Elliot (TDA1514A)
  215. Buttkicker bka-130-c
  216. Low "Ft" TO-3 transistors vs high "Ft" ?
  217. Denon avr 2802 no sound on speakers but "works"
  218. Akai AMU110
  219. Capacitor value in Zobel Network
  220. Mega Simple Class A Amplifier
  221. Strategy to track down a short
  222. Tiger in your amp
  223. Amp On/Off Speaker Noise
  224. Marantz sc-8 intermittent greatness
  225. VAS cascode to direct drive high power MOSFET OPS
  226. AnalogMetric kits??
  227. Technics SU-VX800 Given to me
  228. ALchemist adp20a power amp. Low output
  229. Preamplifier who is it?
  230. Amp stable for 2ohm speakers.
  231. Need replacements for transistors; 2SC2634
  232. MD7001 and MD7021
  233. Altec Lansing 621
  234. Why does this DAC use an NJM4558 for the Low Pass Filter ?
  235. Sony TA-F700ES keeps blowing fuse
  236. cm labs 912p
  237. My last amplifier
  238. How many transistors inside 2SA1302/2SC3281 ?
  239. Safe to downgrade from TO-264 to TO-3P
  240. Old Solid State Power Amp.schematics class AB
  241. 2SC3858/2SA1494 based amplifier?
  242. Hum problem
  243. Power amplifier inspired by Gryphon Tabu (NAD S300)
  244. Kicker 354xi resistor color code
  245. ok, blew-up my speakers :(
  246. Loud hum problem
  247. Quad 520F transistor change?
  248. suggestions for oscillation on neg half of output
  249. What is this discreate component?
  250. Klipsch Promedia 2.1 repair help

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