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  1. elctrocompaniet ec 4.7 mkI
  2. Feedback Takeoff Point ?
  3. Adcom GFA-555 + Onkyo TX-NR709 Mute Thump?
  4. Question about Rotel RB-880 amplifier
  5. New amplifier problems
  6. 100W Hi-Fi audio amplifier!
  7. Technics SU-X920D
  8. CROWN POWERTECH 1
  9. 2SK135 - 2SJ50 -12W
  10. What value bypass caps for 1uf, 2.2uf and 3.3uf?
  11. Building A (Poorly Desinged) Symmetrical Emitter Feedback Amplifier
  12. This old amp is good?
  13. Electrolytic Cap can I replace with film
  14. Sub a silicon trans for a germanium
  15. Anybody have a formal loudness circuit?
  16. any question...some questions?
  17. output inductor//resistor placement
  18. some cuestions help!!!
  19. Help! What would be the input inpedance of this input stage?
  20. Parts placement in enclosure tips
  21. Krell FPB200 schematic or service manual anybody please?
  22. LatFET OPS.
  23. Pioneer SX1010 issue
  24. high impedance load
  25. Sony STR-VX750 no audio & no volume control
  26. LM741 :-)
  27. LME49811TB 500W amp module
  28. Son of Ampzilla VI limiters
  29. PCB Layout Process and Guidelines?
  30. QQQ (Quick Quad Question...)
  31. TRACE ELLIOT ...
  32. Phils Amp - Progress?
  33. Mains Hum - Are cheap caps worth it?
  34. standard AB bias heatsinking versus enriched class A
  35. Make your own custom ICs for very cheap !
  36. class A to class AB switch
  37. Quad 405 clone
  38. Guitar Effect pedals input/output specs
  39. FIND: ORIGINAL OBSOLETE TRANSISTORS
  40. Help! I let some magic smoke out :(
  41. L-speed current sea-saw circuit, simpler the better
  42. Thorens Restek.. Vector Pre Amp
  43. connecting two 110v amplifiers in series on 220v mains
  44. Postive output voltage only
  45. emotiva upa2
  46. Super distorted old amplifier problem
  47. Recommend amplifier to build
  48. Transistor case coupling??
  49. Faulty amp?
  50. Nikoo A-300D, recapping dilemma...
  51. L12-2 CFP Output amp 120W*2 8R
  52. SoundTech PowerSource1300 NOISE
  53. Anyone tried the Renardson Output Stage ?
  54. Simple Killer amplifier
  55. Rotel 820AX problem - any known issues?
  56. Cause of extreme voltage swing at turn on
  57. Amplifier testing on PC with DAAS
  58. Wharfedale EVP-15P amplifier fault
  59. Preamp to match Meridian 206 DS cd player
  60. Crown Com-Tech 400 Dead Channel?
  61. CLASS A POWER AMP
  62. Ultimatest Passive Tone Control Network based on James-Baxandall's topology wanted
  63. Adcom GFA-535 Transistor sub
  64. Pioneer A400 transformer
  65. Amplifier volume knob noise
  66. 100W Hi-Fi amplifier-Help!?
  67. Did someone had tested this current feedback power amp ?
  68. Technics SU-V40
  69. opa827 bypassing,pioneer A-8 tone controls
  70. What Degrades Channel Separation in a Stereo Power Amp?
  71. Recommendation for audio amplifier!?
  72. NAD C320 Can the protection be adjusted
  73. transistor help please
  74. NAIM Nait5i V2 transformer voltage
  75. help fixing a tone control circuit
  76. Jeff Rowland Model 7 mk2 bias adjustement
  77. transistor source
  78. Need help repairing Denon AVR 5803
  79. My first designed amp
  80. Hall-effect current sensor for output stage over-current protection
  81. floating supply amp with single supply
  82. WHICH IS BETTER TRANSISTOR MJE340/350 OR BD139/BD140
  83. Circuit Translation Services
  84. Cairn 4807 Integrated Amplifier Schematic/Service Manual wanted
  85. Aragon 4004 slow relay problem
  86. Marshall Amp GR100RCD Transistor Help
  87. Sansui AU-6900 Questions and problems
  88. Thump when switching amplifier on (guitar amp)
  89. Oscillation only at raising slope
  90. Pure Reference Class A Monoblock
  91. Determining current limit
  92. digital amp modelling
  93. Help in improving a Cambridge P500 (more caps)
  94. MC250 Input Section Voltage Question
  95. Need help with Nad 3020A
  96. Jitter or phase noise in LTSPice
  97. The Sisian Amp
  98. Darlington or Sziklai (compound) pair output stages?
  99. Amplifier repair, some pointers please?
  100. Powering A Tough Speaker (Split from Simple Symmetrical Amplifier)
  101. how can the wattage be?
  102. Experience on diy gene kit A-15
  103. Schematic? Mark Levinson No. 33H
  104. marshall mg100 hdfx
  105. Need help please
  106. Op amps and Pass Transistors
  107. 400W Mosfet Amp Problem
  108. Dx line up comparisons and pcb order info?
  109. Sizing output stage
  110. Other interesting electronics forums ?
  111. Peavey repair- change out one of a group of outputs?
  112. TGM4 amplifier
  113. Lateral FET, Folded drivers, Biasing?
  114. Capacitor Replacement Opinions? - Marcof PPA-1h MC Amp
  115. Best place to start with channel stuck in Protect?
  116. Formula for CR Xo pole?
  117. 100W audio ampligfier - schematic!
  118. APEX PA Amp Turn on off mute - need design support against obsolet devices
  119. Tekko scored some transistors!
  120. help repairing JVC A-k11 integr amp
  121. 80W Hybrid Audio Amplifier!
  122. VINTAGE AMPLIFIERS
  123. Rotel RB990BX protection circuit issue
  124. Denon DRA 55 receiver manual request
  125. Confused about input sensitivity
  126. Biasing lateral FET's, component placement
  127. difference between these two amplifiers
  128. NAD 7130
  129. Nakamichi PA5E MK II service manual / schematic
  130. Peplacement for 2N5638 JFET Chopper Transistor ...?
  131. PHASE LINEAR 400 SERIES TWO
  132. to Change tweeter protection device
  133. 2 Signals THD format
  134. Borrowed a friends AMP and now it doesn't work! HELP!
  135. SSA variants and references
  136. SAE 2200. Could use some hints.
  137. Rotel vs NAD
  138. Assistance to improve 100W amplifier!
  139. Pre amp oscillate
  140. capacitor upgrade for Focal 2.150 amplifier
  141. pioneer a-88x recap,what else could be done
  142. Capacitive load testing
  143. Peavey CS 800x power problem
  144. Shunt Current Feedback
  145. Current Source amplifier for low impedance loads
  146. Hafler PC-19C Boards (Someone make a replacement?)
  147. Peavey cs4000 and cs4080....class?
  148. vintage pioneer ad-360 wiring instructions
  149. Need amp with 200 kOhm input impedance
  150. PCB for audio amplifier with TDA7250!
  151. Fairchild A00-6
  152. Problems PS Audio Delta 100
  153. Hopefully an easy one for you...
  154. Deconstructing Rowland 7
  155. 20~50W amp
  156. Replacement of IRF730 for Sonic Frontiers SFL-1
  157. 20watt amplifier
  158. Current mirrors as collector loads in a symmetric amp
  159. Can I? Stereo in > parallel out into 1 speaker?
  160. c3519 and a1386 transistor replacement
  161. Prefered type of amplifier
  162. Some not very happy experience with my used GFA-555 II AMP
  163. How about a JFET input, TUBE VAS+buffer, and MOSFET output?
  164. AVA Insight+ 240
  165. modern incarnations of Hiraga Le Monstre
  166. Noise Reduction Solutions
  167. schematic error
  168. AV400
  169. The double blind auditions thread
  170. Hum (ground loop?) issue when using HT pass through on SDS-254 amp
  171. PCB for QUASI Amplifier for Beginners with changes!?
  172. NAD 2100 protection on!
  173. Trying to add pre out/main in to integrated amplifier. Am I thinking right?
  174. THD measurement in spice
  175. Leach Amp Project
  176. Threshold Fet 2 Series 2 preamp
  177. sony HST-550W service manual question???
  178. NAD T762 - Circuit Diagram - Help!
  179. Another Crescendo ME Problem...
  180. Grundig Console KS 526
  181. Class S
  182. Simple sub amp a 10-year old could build?
  183. Borbely-Lender True Symmetry
  184. Cyrus I (issue 07)
  185. Schematic for audio amps
  186. Coupling cap 360deg phase shift??
  187. very first "blameless" amplifier prior 1969
  188. About optimos pcb
  189. How to simulate an OLG of the TMC amp
  190. NAD 3020 Rebuild - thermal breaker replacement/source?
  191. STK4143 MKII Datasheet
  192. Capacitors for this amp ?????
  193. PSA 150 S (pure sound amplifier)---help needed
  194. Amp is not bi-wired Speakers are :(
  195. pioneer sx 3800
  196. Help with a Hafler amp and AV receiver setup
  197. Krell KMA-100 DC Offset
  198. Headphone amp NE5532
  199. Limit Amplifier
  200. NAD 3100 amplifier tone POTs
  201. need data on ARC 4700 and ARC 4800
  202. Does it matter? (CLG/OLG question)
  203. Heatsinking drivers, do most drivers get very hot?
  204. Can anyone shed some light please?
  205. Is this heatsink suitable for this amp?
  206. At a loss on thins one
  207. MILLER CAPS ...
  208. Diodes instead of or across emitter resistors
  209. Need help with an old amp
  210. B&K AV6000 Sers II Running HOT
  211. How about even simpler with good clean sound?
  212. Biasing Question
  213. Odd regulator for frontend
  214. Rotel RA-312 - only one channel works
  215. Very simple class B amplifier
  216. BSH103 / BSH203 flicker noise corner
  217. Blameless-like amp burnt channel need help to prevent that happening again!
  218. Need meter light alternative for Sunfire Cinema Grands
  219. Aragon 4004 power amp channel imbalance
  220. Transistor switch audio mute
  221. this class a amp is good?
  222. P3A MODIFIED VERSION
  223. Rotel RB-970BX Upgrade?
  224. The most common cause of speaker buzz from an amp?
  225. can my sony amp be tweeked
  226. List of the best sounding amplifiers
  227. 400 WATTS into a 5.25" 45W RMS Speaker ?
  228. Upgrade for TIP35/36 outputs
  229. ohm's issue
  230. TEAC AG-V7700
  231. Technics SU-V7 not functioning
  232. Metempsychosis of a NAD
  233. Capacitor complacency
  234. sink or not ?
  235. Harman Kardon recycle project
  236. Marantz 2220 Right Channel Static
  237. 2 OHMS DRIVING
  238. Need a tough TO-220 Bipolar...
  239. Can a build up of dust effect the operation of a PCB?
  240. Dx hybrid amplifier will be produced soon
  241. 2N2907A instead of BC179
  242. Audioanalyse PA-60 (PA60) Power Amp - where to get Schematic ??
  243. Hafler DH 200 grounding
  244. Cyrus 2 amp distort when crank up volume
  245. Rotel RB-1010 power amp varistor!
  246. Two transformers on one AC plug?
  247. All CFP Non Global Feedback Amplifier
  248. JFET input, MOSFET VAS, VERTICAL output
  249. Should I remove These Caps?
  250. bench testing

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