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  1. LCDuino-1 Processor, using non-latching relays help
  2. CS3318 PCB Layout
  3. Levels in an active three-way system
  4. Source selector using Analog switches or multiplexers - opinions?
  5. Yet another PGA23xx board...
  6. Concentric shaft Alps "Blue" pot
  7. Cleaning dusty printed circuit boards
  8. ad797 plus buf634
  9. Bypass - ceramic or film?
  10. tweeter crossover
  11. This pre-amp good?
  12. Remote Control Pot
  13. VU Meter ballistics
  14. The "AmpDuino" project
  15. Capacitors at 50v vs 25v on replacement in preamp power supply?
  16. Knocking sound coming from PCB
  17. Versatile quad-amp card
  18. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  19. Just built a Hagerman Cornet 2 phono pre
  20. ad797 questions
  21. [Newbie]Audio bandpass filter design
  22. Wideband DCA preamp with shunt PS
  23. 3-way input selector + Attenuator + Balanced outputs?
  24. subwoofer circuit
  25. Motorised Volume Pot - Controller isolation
  26. Audio compressor to lower TV commercials-help needed
  27. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  28. 2ch passive stereo summing circuit?
  29. designing a 1-Hz lowpass with no DC error
  30. What is a preamp actually doing?
  31. Choosing attenuator for MF X-10D Clone
  32. some questions about DC servo mic pre's
  33. Need hekp with how to select a preamp
  34. Weird problem with a preamp with 3 band EQ module
  35. TEAC VU Meter Hookup
  36. input transformer frequency response?
  37. Help wanted checking vero layout for active 4 channel mixer
  38. Simple non-digital input selector
  39. dc on only one primary of the line trafo
  40. Volume potmeter Technics Su 8600
  41. Servo on non-inverting opamp ?
  42. Any suggestions to improve these output and input filters?
  43. simple solution for VU-Meter
  44. Combined Speaker-Amplifier Project
  45. Teac AN-60 Alignment
  46. 2.5v achieves lower distortion on LDR NSL32SR2
  47. Help Gain clone supply PCB design
  48. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  49. 3-way signal splitter
  50. implimenting linkwitz's notch/dip filter for room eq
  51. Anyone seen this EQ before?
  52. ReCapping marantz av-9000 16v 13000uf
  53. Audio Processing
  54. Anyone know what these caps are for?
  55. Is coax needed to wire a microphone?
  56. How do I choose a preamplifier that would be compatible with this microphone?
  57. W06M – Bridge Rectifier, equivalent substitute
  58. Preamplifier kit information
  59. Handling +4dBu/-10dBv and un/balanced
  60. Line receiver and driver pcb?
  61. 2 conductor shielded cable
  62. HIGHLEVEL INPUT IN PLATE AMP!
  63. 20hz high pass on Ashly XR2000 - removable?
  64. Transformer Based Balanced Output & Impedance
  65. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  66. John Bowers Active Control Unit preamp: Info sought
  67. Looking for pointers on first DIY preamp please.
  68. Simple analog vu-meter driver ?
  69. Please pardon the noob question. need guidance
  70. Build a high pass filter for amplifier
  71. Critique on success of this subwoofer cutoff project?
  72. Need gain AMOUNT for mobile phone/pc sources
  73. re-replacing 2sk213/j76 transistors help
  74. Preventing crossover between mixers
  75. RCA LMI- 32215 A - for recording studio.
  76. Rane pot help please...
  77. Simple low voltage tube preamp stage
  78. HELP me design a discrete current sinking positive V regulator
  79. True Biamping and Active crossovers info request
  80. Question about hypex balanced vs unbalanced
  81. Soundcraftsmen
  82. very small noob question project 88
  83. Help with cable conundrum!
  84. P7 Pre amp Trouble
  85. Party-line / Full-duplex intercom - mixing audio signals
  86. ZSP1 preamp gain
  87. Acurus L10 Powersupply
  88. Building an Analog to Digital Converter Unit...
  89. DIY pre amp board
  90. Opamp power bypass
  91. Tone Control - Volatage range for TL072/LF252-N
  92. Stereo volume attenuation
  93. Quad channel volume control
  94. Work? L, R RCA inputs -> 1 XLR out?
  95. Impedance matching pre -> power.
  96. LME49740 vs TL074, design considerations and stability
  97. Solid state R2R attenuator using analog switches or multiplying DAC
  98. MF nuvista source selector problem again
  99. What do we think about solid-state potentiometers?
  100. TubeCAD's ACF2 as a active crossover
  101. Phaseca--My new diy pre amp
  102. looking for bass treble pcb pattern
  103. Mobile recording using linein
  104. [Need] simple preamp and LPF based on 5532 for digital sources
  105. wall-based trasformer volume control as passive pre?
  106. noob stab in the dark - riaa preamp
  107. Oscillating Op-Amp
  108. Preamp for shotgun mic
  109. Mark Levinson No 38, Need Help
  110. Help! Kenwood Basic C-2 left channel out (phono only)
  111. Signal delay schematic
  112. Adding 4 channels to a 2 channel input on HT amp
  113. vumeter (stereo, mono)
  114. Acquired Some Elan Components, What are They?
  115. Pre-mix for boombox
  116. Reed Switch Audio Attenuator
  117. "Balanced" PGA2311?
  118. 2 way crossover on Chinese pcbs
  119. SE to Balanced pre question
  120. Interconnect Ground Cable Ground Loops
  121. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  122. Any AIKIDO-philes who know why Broskie has changed the formula
  123. One More Overcomplicated Mic Preamp
  124. Problems with subwoofer phase control picking up noise
  125. IC's get hammered
  126. Left/Right channel balance control
  127. Potentiometer Selection
  128. All-In-One Preamp Circuit
  129. Line level mixing
  130. Booze Hounds Labs Phono any good?
  131. PLLXO - Am I doing this right?
  132. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  133. Switching Noise Between Preamps
  134. Bluetooth Lightspeed attenuator
  135. Help getting 5.1 preamp from Ebay repaired please!
  136. Should using balanced cables to amplified monitors improve sound ?
  137. Apox Audio preamp reborn with the power of Arduino
  138. Does an Op Amp Voltage Follower Operate in Class A?
  139. My boozehound phono stage build
  140. Pre amp kit
  141. balanced preamplifier based on LME49990
  142. Merging two channels with passive low passes
  143. Old Colony Sound Lab T-2D Line Amp - Any Info?
  144. Impedance Bridging and Isolation Tranformer
  145. TDA7315 chip parameters interpretation
  146. MFP-102 N fet compatibility
  147. What is the effect of a 22K res in series with a 25K volume pot?
  148. Senior Project: Bandpass Equalizer pedal
  149. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  150. ORTF is best for stereo recording
  151. A zero impedance preamp and CMRR
  152. good preamp
  153. calculate crossover with Re or impedance ?
  154. Op-Amp Preamp Circuit for Electret Mic
  155. Simple Router (then bass management)
  156. Second order shelving filter
  157. Help with component selection.
  158. passive to tame 8khz peak
  159. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  160. Adcom GFP-750 -Needs Repair
  161. Variable gain op-amp for volume control (vs normal voltage divider pot)
  162. Germanium Transistor and FET opamp
  163. 5 zone preamp based on Arduino controlled optocoupler
  164. How to select the right impedance for volume control
  165. In vehicle Pre-amp for mic (12+ VDC)
  166. Resistor-Diode-Relay Logic Source Selector
  167. 3 into 1 input the other way round
  168. Nagging Ground Issue
  169. Looking for Princeton Applied Research 115 MANUAL
  170. Active Band Pass Filter with +/- Gain
  171. Components source
  172. Guitar ABY or Headphone Amplifier?
  173. rod elliot p88 preamp knob arrangment
  174. C-Mos opamps in audio preamplifiers
  175. Cheap, balanced XLR passive pre?
  176. DIY crossover - Sallen-Key?
  177. Hafler 915 preamp cap question
  178. analog 3.5mm to digital usb possible?
  179. Mixer Pre-amp
  180. DIY tube preamp - help with choosing the right kit
  181. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  182. MC-22 schematic question
  183. unbalanced/balanced to balanced converter
  184. My line buffer preamp
  185. Attenuating Preamp Filter Question
  186. biamping with one DAC
  187. Audiophile active crossover
  188. adding EQ without screwing up sound; few questions...
  189. SSTART Pcb and power supply project
  190. Help with a simple envelop detector filter. (averaging the signal)
  191. audio output switch? Monitor Controller
  192. Very simple volume control with IR remote
  193. JFETs and MOSFETs biasing questions
  194. I need advise on audio mixing boards?
  195. pre amp output
  196. OPA134 Amp Help
  197. OPA134
  198. Capacitors voltage rating
  199. Capacitors voltage rating
  200. attenuation on dac output with U-pad
  201. passive preamp
  202. preamp necessary?
  203. Will phono pre > passive pre > amp work well enough?
  204. 60Hz hum problem, please help
  205. distortion cancellation for diode limiter
  206. electret mic preamp for micro ADC
  207. Understanding "Voltage - Input Offset" Parameter
  208. Schade MOSFET + Feedback Line Amp
  209. Preamp or receiver?
  210. Sony BX-270 Datasheet Wanted
  211. Classe Audio DR6 Bias
  212. Dual gang potentiometer for 'mixer'
  213. Aikido Preamp Bass & Treble Controls
  214. Tried active crossover, mean hum...
  215. How to use TDA7439 for center and subwoofer
  216. Active notch filter
  217. simple pre amp volume control with seperate mono out
  218. Help me wire up my SUT correctly (Tamura TKS-27)
  219. How can I split a mixer bus?
  220. Beau's Bias Circuit Schematic
  221. What should be included in a subwoofer lowpass filter?
  222. Potentiometer volume control treble loss bleed
  223. Adcom GFP 815 Pre Amp-Any users?
  224. speaker out to preamp out while driving speaker
  225. 6dB Active crossover
  226. Replacing volume pot from 100K to 50K reduces gain?
  227. Dual Ganged Stereo Volume Control
  228. McIntosh/Conrad Johnson pairing
  229. Input Impedance Question
  230. Active studio monitors/ crossovers
  231. new discrete opamp for line preamplifier
  232. Music Angel Pre Amp
  233. Tilt Equalizer Filter
  234. Parametric EQ based bass boost circuit
  235. Power On Delay/Loss of AC Detector Relay
  236. Balanced Line Driver with DRV134
  237. PGA3211 6.1 assembling
  238. PGA2311 code
  239. SMD High-Voltage Discrete Diamond Buffer
  240. How best to implement image mode controls
  241. Preamp has unwanted delay (and hum)
  242. Pot values in LM1036 preamp circuit
  243. simple three steps attenuator
  244. Behringer Eurorack UB1622fx PRO schematic
  245. Need help with Coustic XM-5e Crossover
  246. Small Fader + Volume control for Car
  247. PGA2311 Evaluation
  248. Are these pots what I need for my preamp?
  249. IR Remote Control
  250. That Corporation 1200 , 1203 , 1206 circuits

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