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View Full Version : Solid State


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  1. Pioneer A88-x with Bad Channel
  2. Ips redesign
  3. LFet design
  4. Why are these opamps so expensive? (OPA2541 @ $250/ea)
  5. MF A1 2016 Rebuild!
  6. Shobud D15 steele guitar amp problem.
  7. adcom gfa 555 ii questions
  8. Crest Audio CPX 1500 Bias
  9. Adcom 555mkii that is confusing for me, to much positive?
  10. Attention please oscillation
  11. Cyrus Amplifier 2
  12. Revisiting an old 1970's design. Was it inspired, or just an 'also ran'.
  13. Parasound a21 bias
  14. WEGA Model JPS 350V (JPS350V) Schematic wanted
  15. Challenge! Quick and dirty amp build - make a suggestion :)
  16. Preamp questions._
  17. The Fisher PA301 amp schematic?
  18. Sony STR-AV210 problem
  19. please help for proline 3000 amp
  20. Schematic for MAP-305II (Advance Acoustic)
  21. My Revox 720 just went Bang. Wrong fuse fitted: any idea please?
  22. zener amplifier
  23. Trying to repair a Samson sx1200 power amp
  24. Apex BA-2000 whats wrong with the schematic unable to simulate
  25. How to improve the distortion of this amp?
  26. Kenwood KA-7300 - temperature of power supply resistors
  27. Which one
  28. Anyone know why Profusions website is down?
  29. Pioneer SX-780 relay pin out
  30. Dynaco Stereo 80
  31. How turn a Class AB into H class
  32. Building a cheap 250W dummy load
  33. Hybrid quasi output LPT input
  34. Adcom GFA 555 Overheating with remote volume control?
  35. ALF 2 & 200 four-channel Lateral Mosfet amplifier
  36. Creek 4330 bias
  37. Rgate for 2sk1530/2sj201
  38. Rotel RA 1062 sound problem
  39. Hitachi SR-303L amp - slow warm up ??
  40. Twin Class AB Output Stages On One Front End
  41. Creating a variable wien bridge oscillator
  42. Denon AVC 1530
  43. Suggestion of opamps
  44. Self's multiple balanced input CMRR - Any adjustment trimmpot?
  45. Pre amp Line driver for DJ mixer
  46. Rega Mira 3 voltage conversion
  47. Self's multiple balanced input CMRR - Any adjustment trimpot?
  48. DIY integrated amp to replace a Linn Classik
  49. How to hook up Avago ASSR-V621
  50. Op Amps for Dummies please
  51. TGM 1i - an integrated hybrid amp inspired by Hugh Dean
  52. Technical Question - Yamaha CA-810 - everything is in mono
  53. Power Amp's NP capacitors and BP capacitors confuse ??
  54. Why my DX AMP oscillates?
  55. SONY STR-DA5200ES
  56. NAD 314 recapping
  57. Rotel RA1070 integrated amp, protection light.
  58. Op amp power decoupling... again...
  59. Cyrus 2 + PSX as a Subwoofer Amp
  60. Paralleling two power amps for extra power
  61. Technics SE-9060 improvement?
  62. diagnosing faulty transistors
  63. Kenwood KA7300 bias check points
  64. 2x 8 ohms split into 8 ohm channel on amp?
  65. 47 volts on output resistors?
  66. lm3886 sound
  67. Yamaha RX-V595 display panel stayed on 3~5 seconds then turned off
  68. Can power supply filter capacitors affect DC offset voltage?
  69. Tandem woofers, low combined DC resistance - effects on amplifier?
  70. Looking for a small signal NPN with no Quasi Saturation: MEASURED DATA
  71. Yamaha CR800 poor bass performance
  72. Replacement transistors
  73. Yamaha A520
  74. Waldhauer and frequency doublets
  75. Powering op amps from amplifier PSU
  76. NOS MOSFETs.
  77. LTSpice model for a 2V zener or less
  78. Film capacitors on AC
  79. Sansui G22000 with Updated Transistors/Low Power Output
  80. Proline 3000 Input Board
  81. New or amp or...?
  82. Bias adjustment pots - how to identify a bad one
  83. Marantz PM310 Upgrade Project
  84. Auxiliary transformer
  85. 150 watt mono Class A/B amplifier to drive 10" subwoofer
  86. Yamaha DSP-AX2 no signs of life.
  87. Lehmann Linear case drawings?
  88. Trim pot values
  89. Help With My Class AB Biasing, Unbalanced npn, pnp current
  90. Sub filter (Bass is course)
  91. Apex BA2000 protection circuit
  92. Class A vs class AB
  93. TA-4650: Bringing it back to life
  94. First shot at the "Blameless" amp topology
  95. HELP: Nakamichi CA-7 Volume Gear Parts
  96. Repair or replacement Technics SU-V8
  97. problem with my apex ax14
  98. Filter capacitors in Toshiba SC-335 power amp
  99. Total beginner question please - XLR ground loop
  100. Technics SU-V65A Troubleshooting please
  101. BUT30V NPN transsistors, amplifier material?
  102. My+Your Opinion And Experience On Matched Transistor and MOSFETS
  103. Any Experience With Holton Precision Amp Modules?
  104. Oscillations on blameless EF amp
  105. Allen 100 Watt amps
  106. Class A bias vs input signal
  107. Technics SA-X11WL distorted output
  108. Apex AX 20 amplifier problem....
  109. My CFP design, need your help!
  110. Audiolab 8000a spontaneously loud
  111. Sansui SE-7
  112. Sanyo STK 404-140
  113. Cyrus 1 Output Transistors
  114. The Fisher 202 - hum problem
  115. Removing Balance & Panorama from Crown IC 150a Preamp
  116. How Can I design a OCL AMP?
  117. What the Cap!!!!?
  118. Need help reviewing a design and layout.
  119. Beginner Solid State Amp (and speakers)
  120. Interference from output coils?
  121. Linear design sa-8200 rambler model stopped working
  122. Revox B-780 Help
  123. Quasi AB driver A
  124. PSU and amp in separate encolsures
  125. FED16BT replacment
  126. Audio Power supply
  127. *Wanted* Cerwin Vega CVA28 service manual
  128. Marantz 2225 Voltage Adjustment Issue
  129. New design 135W 8, 270W 4
  130. Turntable DC Supply 24V Very Complex/Strange
  131. PCB Sanyo
  132. Electrocompaniet AW-100 troubleshooting (right channel intermittent soft popping)
  133. Sony TAN-5550 ancient VFet amp, can I just turn it on?
  134. Blown amp section on NAD 7020 - What to check now?
  135. Really weird problem with volume control
  136. TO-3 power transistor orientation
  137. The Amplifier of 100 Transistors - Blameless using small signal devices as outputs!
  138. Marantz model 240 transistors
  139. Derating, am I missing something?
  140. Alpine 3539 faulty? (DC between RCA shield and supply ground)
  141. yamaha b1 where are 2sk77?
  142. STK42334MK5 diy amp Relay problem
  143. IC + FET redesign
  144. AudioSource AMP300 Troubleshooting
  145. Audio Research D-350 Power Meter Window
  146. Sony TA-F707es - Noise/hiss on on one channel
  147. Possible design issue in early MF B1 amp?
  148. Problem with preamp design
  149. DAC to PWR amp almost blown speakers
  150. Pioneer VSX-519V
  151. Lamp holders - can this type still be obtained?
  152. Does output volume differ btw diff. Opamps?
  153. astable
  154. Transistor replacement
  155. Seas Bragi kit amplifier
  156. Sony TA-N77ES Amplifier replacement parts 2SK244
  157. choices, choices !!!
  158. Need help to double check power supply.
  159. Variable start - up
  160. Phase Linear 400 & 4000 died while in storage
  161. Borbely MILLENNIUM-200
  162. Sausui 9090 Bias issue
  163. A Directory of Apex Audio Amplifiers
  164. Digital potentiometer and a 3 digit display
  165. Help Adding a Current Mirror to a Diff Pair Res Calc
  166. Electrocompaniet AW 250 DMB-R bias
  167. caps for quad 405 amp
  168. Technics SE-A5 Static/Sound in Right Channel
  169. cheapest per watt amplifier design
  170. Sound card FFT chart on a blameless amplifier
  171. Do smaller and paralleled caps sound better as output caps
  172. Mcintosh....ma1700
  173. LME49830
  174. K176 vs. K216
  175. Can I connect a seperate pre/pro to my Onkyo TX-sr805?
  176. antibump
  177. Regarding a Toshiba SY335 preamp
  178. 1/4in shaft and 6mm knob fit question?
  179. Sansui 5000A hum
  180. Two-Stage Push-Pull MOSFET Class-A Amp
  181. schematic for LM3886
  182. Sony STR-DH740 no sound output (possibly transformer)
  183. Capacitance 2x8000 = 10000+6800
  184. Variable Resistor V Semi-Fixed
  185. Volume-Potentiometer replacement rule?
  186. JVC rx8010vbk amp cuts right back off
  187. Superphon Revelation Basic
  188. More lfet questions
  189. Marantz pm7200 Breaking left channel
  190. Help identify name of this connector.
  191. Which way is best for power supply?
  192. Suggestions schematic for a new amp project
  193. NAD 3220PE Project
  194. Mark Levinson ML-9 amp help needed
  195. To buffer or not to buffer that is the question.
  196. Adcom GFA-555 mods
  197. allfet circlotron
  198. PNP LTP vs NPN LTP
  199. Troubleshooting amp repair
  200. Arcam CDS27 vs Marantz SA8005
  201. JBL MPX 600
  202. No DC Offset Adjustment Pots.
  203. Found this board dumped
  204. Class A BJT Powering on question. Will this send a jolt to my power amp?
  205. Need tips for recapping Sansui 9090
  206. Elusive noise on left channel
  207. OpAmpAmp for sub
  208. Monarch / Neckermann 1960s first generation solid state receiver recap
  209. Aragon 24k price
  210. Adcom GFA-555 II South Africa
  211. Marantz MA700 help
  212. Searching for service manual of Hafler 945
  213. Krell KSA-200B Bias
  214. Blast from the past - Kenwood KA-80
  215. Conrad Johnson PV10A--Classe CA 100
  216. A three transistor compound pair?
  217. Need some pointers with finishing touches on mosfet amp repair
  218. pioneer sx-6000 - need to know power supply board voltage values
  219. Transistor gain matching
  220. JFET differential pair trans. choice
  221. Can i replace 2SB755 / 2SD845 Toshibas for 2SA1494 / 2SC3858 Sanken ?
  222. Audio Nirvana,Nap 140 clones.
  223. Parasound A21 problem
  224. bridge rectifier question
  225. buzz from amp when connected to speaker
  226. Aragon 8008BB Voltage Conversion
  227. Sansui AU-6600 Bias
  228. Measured data on the J105 Nchannel JFET
  229. SE Amp operation question
  230. Aiwa C30 recap and OP amps
  231. Explanation of Class A
  232. Speaker protection 12v amp
  233. NAD C 165BEE
  234. Hafler 9505 hum/buzz noise
  235. LM334 makes quite a nice 5.5 mA current source, works down to 2.0-2.2 volts
  236. HELP! Higher Fidelity Industries HF-138 shematic
  237. no mention of active loads in Bob Cordell's book
  238. Servo controlled Op Amp board on Ebay
  239. Harman Kardon receiver
  240. McCormack DNA 0.5 Re Cap
  241. Sony TA-3600 BI-AMP Very Low Volume
  242. noisy marantz 1050
  243. Designing 200w Amplifier. Oscillations or something else? need help please.
  244. How do I make a speaker crossover to only hear range of human voice?
  245. Concept: Bridged amplifier with dc bias on the output
  246. Cambridge audio P50 bias adjustment
  247. Krell FPB catastrophic protection conditions?
  248. 50 solid ..years
  249. Yamaha M65 Bias adjustment
  250. Can I build an amp to do it all?

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