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  1. Passive Preamp - Grounding plan
  2. +/- 0.3V bumps on my ground
  3. Yet another preamp...
  4. Active Filter, Delay, and LT circuit board
  5. does anyone have a schematic and pcb layout for 3 band bass onboard eq?
  6. Carver C-1 Preamp Output Voltage Issue
  7. Adding bands to an equalizer circuit?
  8. transformer attenuator directly from v-out dac
  9. Looking for a better OP-Amp to replace a UTC TDA2822L
  10. Hafler DH-101 Pre-Amp
  11. Moog parametric EQ - proper pots?
  12. pga2310 output resistors
  13. HELP with Kaneda line stage PSU
  14. source/ speaker selector
  15. Stepped attenuator - getting the impedance right
  16. Volume control bent(slight) parasound PHP-850
  17. connect IR receiver
  18. High cap ceramic capacitors.... how they "sound"
  19. LED peak level indicator
  20. Balanced Matrix Mixer Question!
  21. Where shall I place the potentiometer?
  22. Preamp to go with an Arcam Delta290 power - do i need active, or will passive be ok?
  23. Is This Possible? Am I Crazy?
  24. Sony TA-E88b ?????
  25. coda pre-01 help fix?
  26. Need a 1 meg input pre stage-?!
  27. Balanced Line driver help.. noisy
  28. 6-band graphic eq project component substitutions / improvements
  29. 1176 compressor output transformer alternative
  30. Help-AC input connected directly to case!
  31. different gain levels and a PLLXO´s impedance
  32. Thorens restec V1 preamplifier
  33. Signal-Powered Compressor?
  34. simplest, purest mixer
  35. Ideas to improve this microphone preamp?
  36. Preamplifier from Lineup & Fotios for fun
  37. MM cartridge capacitance loading
  38. Volume Equilizer
  39. Wanted: Melos 110B schematics
  40. Can 555 circuit supply enough neg voltage
  41. amplifier works connected to PC .. but not when connected to car radio
  42. DIY a preamp
  43. Dynaco PAS Preamp - Complete Rebuild
  44. Subwoofer filter problem - Please help me
  45. Remote control receiver - help
  46. High end preamp kit
  47. Output tranny for 6080 tube
  48. Need to convert a Linar preamp from 220V to 120V
  49. help with interfacing microcontroller to pga volume chip
  50. Carbon pot vs digital pot
  51. Amplitude Errors in the Summed Response of Audio Crossover Filters
  52. Mixer/Amplifier
  53. Help upgrading opamps!
  54. EAD theatermaster 8800 problem
  55. Arduino controled PGA2310 Preamp
  56. Lightspeed clone, BOM
  57. Passive Line Splitter
  58. Resistor wattage for stepped attenuator
  59. Emitter bypass caps in a CE stage
  60. Wanted: Zero feedback 2-10x gain line stage...prefer symmetrical
  61. Cheap Valve Kits (such as this one)... Are they worth the effort?
  62. Need help with Adcom gcd-575
  63. Subwoofer channel mix + crossover
  64. Digital volume control from audiomodule
  65. audio mono preamplifier schematic needed
  66. 8 channel touch sense/remote volume controll
  67. Help with Hum - Hum Help - Aikido
  68. Denon 3808 Schematic
  69. 24 input/24 output mixer
  70. new idea (for me): dual first order building block PCB
  71. Op amps help! 3x3 12v matrix mixer
  72. Project: Stepped attenuator. 35 steps!
  73. Fixing a Kenwood 700c preamplifier - help please!
  74. Looking for help to put together Oracle tt and Graham arm
  75. Vintage Audire Diffet 2 preamp help
  76. This guy has a circuit tattoed on his arm
  77. DC servo and gain stage board with output zobel
  78. class A Line level buffer
  79. Blue tooth headset used for wireless
  80. Looking for: wireless remote control of volume/balanceH
  81. Very noisy pre-amp outputs.
  82. I need a line level splitter and don't want to spend $50+ on a transformer
  83. reusing a 3-way crossover
  84. Is this Design practicable?
  85. Mis-behaving crossover/preamp
  86. Low distortion & noise digitally controlled volume chip
  87. Passive (active) preamplifier with selector (motorized ALPS, IR)
  88. How to add an extra set of RCA outputs
  89. line level unbalanced to balanced converter
  90. Balanced output confusion
  91. Why do i need a preamp?
  92. Shelving 2nd order high-pass?
  93. Listening for the best attenuator load for direct out AKM and CS dac chips
  94. Sylonex and Arduino preamp
  95. ACTIVE loudness control
  96. CJ PV-15 Pre
  97. Schematic wanted/LINN KAIRN PRO
  98. Have I ruined my V&L systems EC3 -vintage- active crossover??
  99. Mic Preamp + Sunt Regulator a la E. Borbely
  100. +-70v and opamps
  101. NE5532 preamp works only in mono
  102. Velleman K8084 pre-amp kit question
  103. Quick mixer question
  104. Heybrook C3 & P3, power conversion, help/info.
  105. Problem - Line level splitter
  106. Schematic wanted
  107. JFET/MOSFET complementary-differential preamplifier
  108. Active Croosover PAss labs
  109. Class A op amp circuits with balanced i/o
  110. Offset Nulling for BUF03 Buffer
  111. Nakamichi CA-5 Stereo Pre and major hum
  112. Lcd bargraph
  113. help! Exploding diy remote control volume board!
  114. tilt eq schematic check
  115. AMB LABS A20 Discrete
  116. 10band equalizer
  117. Input selector, automatic
  118. Help making a circuit
  119. Looking for Krell KRC-3 preamp schematics
  120. Long cable query
  121. Newbie. What AM I trying to find/build?
  122. http://www.diyaudio.com/forums/analog-line-level/181105-mezmerize-build.html#post2432
  123. preamp - at the most basic level
  124. LED VU meter using existing bar graph
  125. MOX Active Crossover II Gain Adjustment
  126. Help with a JC2
  127. Hong Kong Fakes
  128. Does the cable impedance matter when making audio level measurements?
  129. rolling of bass before amp
  130. Cheap volume control chip
  131. HQ Preamp - Elector scheme or other suggestion
  132. Three Pair Cable
  133. tube preamp mod for bass bypass to ss power IN?
  134. Adcom GFP-715
  135. DIY line-level interconnects
  136. Measuring impedance of Pot/attenuator
  137. Question about shielded wire...
  138. Subwoofer filter
  139. Mono to Dual Channel convert
  140. Input selector (like Quad)
  141. Germanium transistors for a preamplifier
  142. the hat-trick volume control ;)
  143. Balanced LDR preamp
  144. Multichannel volume control
  145. The design of active crossovers- Douglas Self wants your opinions
  146. newb looking for preamp design and a few questions answered
  147. Voltage Controlled Switch
  148. osufishman stereo line level to mono
  149. Poor TV audio S/N
  150. Need help with mic preamp
  151. Ideas for a simple passive band-stop filter?
  152. Wiring a 10k fader pot?
  153. variable frequency tilt/shelf filter - bad idea?
  154. 47 Laboratory started selling kits
  155. Douglas Self's Active Crossovers book
  156. New Line Pre-Amp taking Shape
  157. Managing multiple inputs & master level...
  158. AR-XA woes...
  159. Help!! LM317T Filament Heater Problem
  160. Fully Balanced Input/Output
  161. mccormack micro phono drive
  162. Differential buffer without feedback?
  163. Does the intrinsic low-end roll-off of a mid driver change the phase error?
  164. Accuphase C-200 Stereo Control Preamp...
  165. DIY 4 Channel Stereo Mixer
  166. preamp
  167. no output on skytec pro 240 amp
  168. pro-ject phonobox se opamp substitution
  169. Trying to find a spectrum analyser...
  170. Transfer LP TO CD
  171. Bi-amp crossover design
  172. active crossover board capabilities - I want your input
  173. DIY BJT buffer design
  174. Another easy to answer question that is above me. XLR vs Ground loop
  175. Crossovers question - car audio
  176. Using a Precision Current Source to drive an LDR attenuator
  177. Crossfeed problem (Jan Meier's design)
  178. Help me understand the "pre" stage levels.
  179. Instrumentation op-amps for audio
  180. Audio Buffer 8 years after
  181. Subwoofer filter with sensing LFE switch
  182. JFET based audio source selector
  183. 5-BAND EQ: Constant Q or conventional topology?
  184. Discrete line amplifier question
  185. How to calculate capacitor values for fully parametric EQ?
  186. DIY stepped attenuator using C7D0423N rotary switch.
  187. Inverting op amp out of phase?
  188. diy dj mixer
  189. Comparison of Light Dependent Resistors
  190. Cab/Mic simulator
  191. Jolida JD9 Upgrade/Mods Clarification.
  192. Rejuvenating an old DM-602.
  193. Eliminating series resistor at line output?
  194. Low-distortion Class-A line/headphone buffer
  195. Open to suggestions!
  196. Stereo bandpass filter
  197. SSM2019 with unbalanced input
  198. Studer A-779 caps?
  199. LM4562 Spice model
  200. Adding balancing transformer to preamp, signal loss
  201. Balance pot not working the way it should
  202. Potentiometer Resistance ???
  203. A better formula for Silonex LDR's
  204. Pre-amp output level question
  205. DC blocking caps ?
  206. Anyone have a good design for a 3-band isolator or EQ?
  207. question about this schematic ?
  208. Yamaha R-5 Receiver
  209. How to mix few balanced output?
  210. Can I Add a Balance Pot?
  211. How to apply right way the pot for balanced output?
  212. Preamp booster ?
  213. polarity with a balanced pllxo filter
  214. Microphone level balanced XLR mixer outputs?
  215. Preamp problem
  216. stereo 6G15 fender reverb with balanced in and out?
  217. behringer cx2310
  218. Need circuit, 6,12,18,24db attenuator
  219. Tube line level?
  220. Calculating gain of loudness control
  221. compressor diy
  222. Resistors valus for shunt stepped attenuator?
  223. QUAD 44 Pooge
  224. ARC LS25 mkII noise level
  225. EML 20A or 30A transformer coupled preamp
  226. X-Altra Mini One
  227. Passive mixer for two CD changers
  228. ARC LS25 mkII tube change
  229. Overvoltage protection
  230. condenser microphone question
  231. Simple preamp with baxandall
  232. Schematic/Service Manual DOD SR-835
  233. How to buffer a sallen-key circuit
  234. Connecting NVA P50 to DC I/P
  235. Multi-Channel Preamp for Stereo Output instruments
  236. Digital attenuator without PIC
  237. High Quality POT Recommendation
  238. Changing filter Arcam Black Box 3
  239. Attenuator for Rod Elliott's Bi-amped projects
  240. Low pass filters for removing ultrasonic noise?
  241. Aircraft Intercom
  242. Fet nine, 10 differences?
  243. Do all OPA2134PA's sound the same?
  244. discrete balanced to unbalanced conveter?
  245. XO3: The 1/2/3-way Active Crossover/filter PCB. Design suggestions welcome!
  246. THAT1512 (INA217) based preamp and input transformer
  247. electronic crossovers which to buy
  248. Probably a simple question, regarding volume control
  249. active crossover advice?
  250. Marantz 7C Kit

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