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

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