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  1. Concentric shaft Alps "Blue" pot
  2. Cleaning dusty printed circuit boards
  3. ad797 plus buf634
  4. Bypass - ceramic or film?
  5. tweeter crossover
  6. This pre-amp good?
  7. Remote Control Pot
  8. VU Meter ballistics
  9. The "AmpDuino" project
  10. Capacitors at 50v vs 25v on replacement in preamp power supply?
  11. Knocking sound coming from PCB
  12. Versatile quad-amp card
  13. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  14. Just built a Hagerman Cornet 2 phono pre
  15. ad797 questions
  16. [Newbie]Audio bandpass filter design
  17. Wideband DCA preamp with shunt PS
  18. 3-way input selector + Attenuator + Balanced outputs?
  19. subwoofer circuit
  20. Motorised Volume Pot - Controller isolation
  21. Audio compressor to lower TV commercials-help needed
  22. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  23. 2ch passive stereo summing circuit?
  24. designing a 1-Hz lowpass with no DC error
  25. What is a preamp actually doing?
  26. Choosing attenuator for MF X-10D Clone
  27. some questions about DC servo mic pre's
  28. Need hekp with how to select a preamp
  29. Weird problem with a preamp with 3 band EQ module
  30. TEAC VU Meter Hookup
  31. input transformer frequency response?
  32. Help wanted checking vero layout for active 4 channel mixer
  33. Simple non-digital input selector
  34. dc on only one primary of the line trafo
  35. Volume potmeter Technics Su 8600
  36. Servo on non-inverting opamp ?
  37. Any suggestions to improve these output and input filters?
  38. simple solution for VU-Meter
  39. Combined Speaker-Amplifier Project
  40. Teac AN-60 Alignment
  41. 2.5v achieves lower distortion on LDR NSL32SR2
  42. Help Gain clone supply PCB design
  43. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  44. 3-way signal splitter
  45. implimenting linkwitz's notch/dip filter for room eq
  46. Anyone seen this EQ before?
  47. ReCapping marantz av-9000 16v 13000uf
  48. Audio Processing
  49. Anyone know what these caps are for?
  50. Is coax needed to wire a microphone?
  51. How do I choose a preamplifier that would be compatible with this microphone?
  52. W06M – Bridge Rectifier, equivalent substitute
  53. Preamplifier kit information
  54. Handling +4dBu/-10dBv and un/balanced
  55. Line receiver and driver pcb?
  56. 2 conductor shielded cable
  57. HIGHLEVEL INPUT IN PLATE AMP!
  58. 20hz high pass on Ashly XR2000 - removable?
  59. Transformer Based Balanced Output & Impedance
  60. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  61. John Bowers Active Control Unit preamp: Info sought
  62. Looking for pointers on first DIY preamp please.
  63. Simple analog vu-meter driver ?
  64. Please pardon the noob question. need guidance
  65. Build a high pass filter for amplifier
  66. Critique on success of this subwoofer cutoff project?
  67. Need gain AMOUNT for mobile phone/pc sources
  68. re-replacing 2sk213/j76 transistors help
  69. Preventing crossover between mixers
  70. RCA LMI- 32215 A - for recording studio.
  71. Rane pot help please...
  72. Simple low voltage tube preamp stage
  73. HELP me design a discrete current sinking positive V regulator
  74. True Biamping and Active crossovers info request
  75. Question about hypex balanced vs unbalanced
  76. Soundcraftsmen
  77. very small noob question project 88
  78. Help with cable conundrum!
  79. P7 Pre amp Trouble
  80. Party-line / Full-duplex intercom - mixing audio signals
  81. ZSP1 preamp gain
  82. Acurus L10 Powersupply
  83. Building an Analog to Digital Converter Unit...
  84. DIY pre amp board
  85. Opamp power bypass
  86. Tone Control - Volatage range for TL072/LF252-N
  87. Stereo volume attenuation
  88. Quad channel volume control
  89. Work? L, R RCA inputs -> 1 XLR out?
  90. Impedance matching pre -> power.
  91. LME49740 vs TL074, design considerations and stability
  92. Solid state R2R attenuator using analog switches or multiplying DAC
  93. MF nuvista source selector problem again
  94. What do we think about solid-state potentiometers?
  95. TubeCAD's ACF2 as a active crossover
  96. Phaseca--My new diy pre amp
  97. looking for bass treble pcb pattern
  98. Mobile recording using linein
  99. [Need] simple preamp and LPF based on 5532 for digital sources
  100. wall-based trasformer volume control as passive pre?
  101. noob stab in the dark - riaa preamp
  102. Oscillating Op-Amp
  103. Preamp for shotgun mic
  104. Mark Levinson No 38, Need Help
  105. Help! Kenwood Basic C-2 left channel out (phono only)
  106. Signal delay schematic
  107. Adding 4 channels to a 2 channel input on HT amp
  108. vumeter (stereo, mono)
  109. Acquired Some Elan Components, What are They?
  110. Pre-mix for boombox
  111. Reed Switch Audio Attenuator
  112. "Balanced" PGA2311?
  113. 2 way crossover on Chinese pcbs
  114. SE to Balanced pre question
  115. Interconnect Ground Cable Ground Loops
  116. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  117. Any AIKIDO-philes who know why Broskie has changed the formula
  118. One More Overcomplicated Mic Preamp
  119. Problems with subwoofer phase control picking up noise
  120. IC's get hammered
  121. Left/Right channel balance control
  122. Potentiometer Selection
  123. All-In-One Preamp Circuit
  124. Line level mixing
  125. Booze Hounds Labs Phono any good?
  126. PLLXO - Am I doing this right?
  127. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  128. Switching Noise Between Preamps
  129. Bluetooth Lightspeed attenuator
  130. Help getting 5.1 preamp from Ebay repaired please!
  131. Should using balanced cables to amplified monitors improve sound ?
  132. Apox Audio preamp reborn with the power of Arduino
  133. Does an Op Amp Voltage Follower Operate in Class A?
  134. My boozehound phono stage build
  135. Pre amp kit
  136. balanced preamplifier based on LME49990
  137. Merging two channels with passive low passes
  138. Old Colony Sound Lab T-2D Line Amp - Any Info?
  139. Impedance Bridging and Isolation Tranformer
  140. TDA7315 chip parameters interpretation
  141. MFP-102 N fet compatibility
  142. What is the effect of a 22K res in series with a 25K volume pot?
  143. Senior Project: Bandpass Equalizer pedal
  144. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  145. ORTF is best for stereo recording
  146. A zero impedance preamp and CMRR
  147. good preamp
  148. calculate crossover with Re or impedance ?
  149. Op-Amp Preamp Circuit for Electret Mic
  150. Simple Router (then bass management)
  151. Second order shelving filter
  152. Help with component selection.
  153. passive to tame 8khz peak
  154. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  155. Adcom GFP-750 -Needs Repair
  156. Variable gain op-amp for volume control (vs normal voltage divider pot)
  157. Germanium Transistor and FET opamp
  158. 5 zone preamp based on Arduino controlled optocoupler
  159. How to select the right impedance for volume control
  160. In vehicle Pre-amp for mic (12+ VDC)
  161. Resistor-Diode-Relay Logic Source Selector
  162. 3 into 1 input the other way round
  163. Nagging Ground Issue
  164. Looking for Princeton Applied Research 115 MANUAL
  165. Active Band Pass Filter with +/- Gain
  166. Components source
  167. Guitar ABY or Headphone Amplifier?
  168. rod elliot p88 preamp knob arrangment
  169. C-Mos opamps in audio preamplifiers
  170. Cheap, balanced XLR passive pre?
  171. DIY crossover - Sallen-Key?
  172. Hafler 915 preamp cap question
  173. analog 3.5mm to digital usb possible?
  174. Mixer Pre-amp
  175. DIY tube preamp - help with choosing the right kit
  176. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  177. MC-22 schematic question
  178. unbalanced/balanced to balanced converter
  179. My line buffer preamp
  180. Attenuating Preamp Filter Question
  181. biamping with one DAC
  182. Audiophile active crossover
  183. adding EQ without screwing up sound; few questions...
  184. SSTART Pcb and power supply project
  185. Help with a simple envelop detector filter. (averaging the signal)
  186. audio output switch? Monitor Controller
  187. Very simple volume control with IR remote
  188. JFETs and MOSFETs biasing questions
  189. I need advise on audio mixing boards?
  190. pre amp output
  191. OPA134 Amp Help
  192. OPA134
  193. Capacitors voltage rating
  194. Capacitors voltage rating
  195. attenuation on dac output with U-pad
  196. passive preamp
  197. preamp necessary?
  198. Will phono pre > passive pre > amp work well enough?
  199. 60Hz hum problem, please help
  200. distortion cancellation for diode limiter
  201. electret mic preamp for micro ADC
  202. Understanding "Voltage - Input Offset" Parameter
  203. Schade MOSFET + Feedback Line Amp
  204. Preamp or receiver?
  205. Sony BX-270 Datasheet Wanted
  206. Classe Audio DR6 Bias
  207. Dual gang potentiometer for 'mixer'
  208. Aikido Preamp Bass & Treble Controls
  209. Tried active crossover, mean hum...
  210. How to use TDA7439 for center and subwoofer
  211. Active notch filter
  212. simple pre amp volume control with seperate mono out
  213. Help me wire up my SUT correctly (Tamura TKS-27)
  214. How can I split a mixer bus?
  215. Beau's Bias Circuit Schematic
  216. What should be included in a subwoofer lowpass filter?
  217. Potentiometer volume control treble loss bleed
  218. Adcom GFP 815 Pre Amp-Any users?
  219. speaker out to preamp out while driving speaker
  220. 6dB Active crossover
  221. Replacing volume pot from 100K to 50K reduces gain?
  222. Dual Ganged Stereo Volume Control
  223. McIntosh/Conrad Johnson pairing
  224. Input Impedance Question
  225. Active studio monitors/ crossovers
  226. new discrete opamp for line preamplifier
  227. Music Angel Pre Amp
  228. Tilt Equalizer Filter
  229. Parametric EQ based bass boost circuit
  230. Power On Delay/Loss of AC Detector Relay
  231. Balanced Line Driver with DRV134
  232. PGA3211 6.1 assembling
  233. PGA2311 code
  234. SMD High-Voltage Discrete Diamond Buffer
  235. How best to implement image mode controls
  236. Preamp has unwanted delay (and hum)
  237. Pot values in LM1036 preamp circuit
  238. simple three steps attenuator
  239. Behringer Eurorack UB1622fx PRO schematic
  240. Need help with Coustic XM-5e Crossover
  241. Small Fader + Volume control for Car
  242. PGA2311 Evaluation
  243. Are these pots what I need for my preamp?
  244. IR Remote Control
  245. That Corporation 1200 , 1203 , 1206 circuits
  246. portable set field mixer/ mic pre
  247. Compact simple EQ
  248. Digitally controlled pot distortion?
  249. Help me Choose Between A and B
  250. Quad Eight Electronics EQ712

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