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  1. subwoofer circuit
  2. Motorised Volume Pot - Controller isolation
  3. Audio compressor to lower TV commercials-help needed
  4. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  5. 2ch passive stereo summing circuit?
  6. designing a 1-Hz lowpass with no DC error
  7. What is a preamp actually doing?
  8. Choosing attenuator for MF X-10D Clone
  9. some questions about DC servo mic pre's
  10. Need hekp with how to select a preamp
  11. Weird problem with a preamp with 3 band EQ module
  12. TEAC VU Meter Hookup
  13. input transformer frequency response?
  14. Help wanted checking vero layout for active 4 channel mixer
  15. Simple non-digital input selector
  16. dc on only one primary of the line trafo
  17. Volume potmeter Technics Su 8600
  18. Servo on non-inverting opamp ?
  19. Any suggestions to improve these output and input filters?
  20. simple solution for VU-Meter
  21. Combined Speaker-Amplifier Project
  22. Teac AN-60 Alignment
  23. 2.5v achieves lower distortion on LDR NSL32SR2
  24. Help Gain clone supply PCB design
  25. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  26. 3-way signal splitter
  27. implimenting linkwitz's notch/dip filter for room eq
  28. Anyone seen this EQ before?
  29. ReCapping marantz av-9000 16v 13000uf
  30. Audio Processing
  31. Anyone know what these caps are for?
  32. Is coax needed to wire a microphone?
  33. How do I choose a preamplifier that would be compatible with this microphone?
  34. W06M – Bridge Rectifier, equivalent substitute
  35. Preamplifier kit information
  36. Handling +4dBu/-10dBv and un/balanced
  37. Line receiver and driver pcb?
  38. 2 conductor shielded cable
  39. HIGHLEVEL INPUT IN PLATE AMP!
  40. 20hz high pass on Ashly XR2000 - removable?
  41. Transformer Based Balanced Output & Impedance
  42. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  43. John Bowers Active Control Unit preamp: Info sought
  44. Looking for pointers on first DIY preamp please.
  45. Simple analog vu-meter driver ?
  46. Please pardon the noob question. need guidance
  47. Build a high pass filter for amplifier
  48. Critique on success of this subwoofer cutoff project?
  49. Need gain AMOUNT for mobile phone/pc sources
  50. re-replacing 2sk213/j76 transistors help
  51. Preventing crossover between mixers
  52. RCA LMI- 32215 A - for recording studio.
  53. Rane pot help please...
  54. Simple low voltage tube preamp stage
  55. HELP me design a discrete current sinking positive V regulator
  56. True Biamping and Active crossovers info request
  57. Question about hypex balanced vs unbalanced
  58. Soundcraftsmen
  59. very small noob question project 88
  60. Help with cable conundrum!
  61. P7 Pre amp Trouble
  62. Party-line / Full-duplex intercom - mixing audio signals
  63. ZSP1 preamp gain
  64. Acurus L10 Powersupply
  65. Building an Analog to Digital Converter Unit...
  66. DIY pre amp board
  67. Opamp power bypass
  68. Tone Control - Volatage range for TL072/LF252-N
  69. Stereo volume attenuation
  70. Quad channel volume control
  71. Work? L, R RCA inputs -> 1 XLR out?
  72. Impedance matching pre -> power.
  73. LME49740 vs TL074, design considerations and stability
  74. Solid state R2R attenuator using analog switches or multiplying DAC
  75. MF nuvista source selector problem again
  76. What do we think about solid-state potentiometers?
  77. TubeCAD's ACF2 as a active crossover
  78. Phaseca--My new diy pre amp
  79. looking for bass treble pcb pattern
  80. Mobile recording using linein
  81. [Need] simple preamp and LPF based on 5532 for digital sources
  82. wall-based trasformer volume control as passive pre?
  83. noob stab in the dark - riaa preamp
  84. Oscillating Op-Amp
  85. Preamp for shotgun mic
  86. Mark Levinson No 38, Need Help
  87. Help! Kenwood Basic C-2 left channel out (phono only)
  88. Signal delay schematic
  89. Adding 4 channels to a 2 channel input on HT amp
  90. vumeter (stereo, mono)
  91. Acquired Some Elan Components, What are They?
  92. Pre-mix for boombox
  93. Reed Switch Audio Attenuator
  94. "Balanced" PGA2311?
  95. 2 way crossover on Chinese pcbs
  96. SE to Balanced pre question
  97. Interconnect Ground Cable Ground Loops
  98. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  99. Any AIKIDO-philes who know why Broskie has changed the formula
  100. One More Overcomplicated Mic Preamp
  101. Problems with subwoofer phase control picking up noise
  102. IC's get hammered
  103. Left/Right channel balance control
  104. Potentiometer Selection
  105. All-In-One Preamp Circuit
  106. Line level mixing
  107. Booze Hounds Labs Phono any good?
  108. PLLXO - Am I doing this right?
  109. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  110. Switching Noise Between Preamps
  111. Bluetooth Lightspeed attenuator
  112. Help getting 5.1 preamp from Ebay repaired please!
  113. Should using balanced cables to amplified monitors improve sound ?
  114. Apox Audio preamp reborn with the power of Arduino
  115. Does an Op Amp Voltage Follower Operate in Class A?
  116. My boozehound phono stage build
  117. Pre amp kit
  118. balanced preamplifier based on LME49990
  119. Merging two channels with passive low passes
  120. Old Colony Sound Lab T-2D Line Amp - Any Info?
  121. Impedance Bridging and Isolation Tranformer
  122. TDA7315 chip parameters interpretation
  123. MFP-102 N fet compatibility
  124. What is the effect of a 22K res in series with a 25K volume pot?
  125. Senior Project: Bandpass Equalizer pedal
  126. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  127. ORTF is best for stereo recording
  128. A zero impedance preamp and CMRR
  129. good preamp
  130. calculate crossover with Re or impedance ?
  131. Op-Amp Preamp Circuit for Electret Mic
  132. Simple Router (then bass management)
  133. Second order shelving filter
  134. Help with component selection.
  135. passive to tame 8khz peak
  136. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  137. Adcom GFP-750 -Needs Repair
  138. Variable gain op-amp for volume control (vs normal voltage divider pot)
  139. Germanium Transistor and FET opamp
  140. 5 zone preamp based on Arduino controlled optocoupler
  141. How to select the right impedance for volume control
  142. In vehicle Pre-amp for mic (12+ VDC)
  143. Resistor-Diode-Relay Logic Source Selector
  144. 3 into 1 input the other way round
  145. Nagging Ground Issue
  146. Looking for Princeton Applied Research 115 MANUAL
  147. Active Band Pass Filter with +/- Gain
  148. Components source
  149. Guitar ABY or Headphone Amplifier?
  150. rod elliot p88 preamp knob arrangment
  151. C-Mos opamps in audio preamplifiers
  152. Cheap, balanced XLR passive pre?
  153. DIY crossover - Sallen-Key?
  154. Hafler 915 preamp cap question
  155. analog 3.5mm to digital usb possible?
  156. Mixer Pre-amp
  157. DIY tube preamp - help with choosing the right kit
  158. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  159. MC-22 schematic question
  160. unbalanced/balanced to balanced converter
  161. My line buffer preamp
  162. Attenuating Preamp Filter Question
  163. biamping with one DAC
  164. Audiophile active crossover
  165. adding EQ without screwing up sound; few questions...
  166. SSTART Pcb and power supply project
  167. Help with a simple envelop detector filter. (averaging the signal)
  168. audio output switch? Monitor Controller
  169. Very simple volume control with IR remote
  170. JFETs and MOSFETs biasing questions
  171. I need advise on audio mixing boards?
  172. pre amp output
  173. OPA134 Amp Help
  174. OPA134
  175. Capacitors voltage rating
  176. Capacitors voltage rating
  177. attenuation on dac output with U-pad
  178. passive preamp
  179. preamp necessary?
  180. Will phono pre > passive pre > amp work well enough?
  181. 60Hz hum problem, please help
  182. distortion cancellation for diode limiter
  183. electret mic preamp for micro ADC
  184. Understanding "Voltage - Input Offset" Parameter
  185. Schade MOSFET + Feedback Line Amp
  186. Preamp or receiver?
  187. Sony BX-270 Datasheet Wanted
  188. Classe Audio DR6 Bias
  189. Dual gang potentiometer for 'mixer'
  190. Aikido Preamp Bass & Treble Controls
  191. Tried active crossover, mean hum...
  192. How to use TDA7439 for center and subwoofer
  193. Active notch filter
  194. simple pre amp volume control with seperate mono out
  195. Help me wire up my SUT correctly (Tamura TKS-27)
  196. How can I split a mixer bus?
  197. Beau's Bias Circuit Schematic
  198. What should be included in a subwoofer lowpass filter?
  199. Potentiometer volume control treble loss bleed
  200. Adcom GFP 815 Pre Amp-Any users?
  201. speaker out to preamp out while driving speaker
  202. 6dB Active crossover
  203. Replacing volume pot from 100K to 50K reduces gain?
  204. Dual Ganged Stereo Volume Control
  205. McIntosh/Conrad Johnson pairing
  206. Input Impedance Question
  207. Active studio monitors/ crossovers
  208. new discrete opamp for line preamplifier
  209. Music Angel Pre Amp
  210. Tilt Equalizer Filter
  211. Parametric EQ based bass boost circuit
  212. Power On Delay/Loss of AC Detector Relay
  213. Balanced Line Driver with DRV134
  214. PGA3211 6.1 assembling
  215. PGA2311 code
  216. SMD High-Voltage Discrete Diamond Buffer
  217. How best to implement image mode controls
  218. Preamp has unwanted delay (and hum)
  219. Pot values in LM1036 preamp circuit
  220. simple three steps attenuator
  221. Behringer Eurorack UB1622fx PRO schematic
  222. Need help with Coustic XM-5e Crossover
  223. Small Fader + Volume control for Car
  224. PGA2311 Evaluation
  225. Are these pots what I need for my preamp?
  226. IR Remote Control
  227. That Corporation 1200 , 1203 , 1206 circuits
  228. portable set field mixer/ mic pre
  229. Compact simple EQ
  230. Digitally controlled pot distortion?
  231. Help me Choose Between A and B
  232. Quad Eight Electronics EQ712
  233. Adding a line level output to PGA2311 preamp
  234. Using Joachim Gerhard Filter Buffers as balanced crossover
  235. Impedance measuring jig and iSEMcon kit
  236. LM1036N Potentiometer Type
  237. 4558d
  238. 10M45 as simple preamp...
  239. Kenwood c-2 balance pot
  240. Attenuator Impedance for Adcom GFA-535?
  241. McIntosh C712 Preamplifier - Schematic wanted
  242. Speaker Combination in Custom Installation, please help
  243. 5 band equalizer, need help!!
  244. Parasound P/HP-850 Preamp Problem
  245. Crossover between pre and power amp for sub
  246. miniDSP pre-amp & volume control idea
  247. Klark Teknik Upgrae for 2ch
  248. signal level
  249. THAT 1200 Balaced Receiver IC?
  250. Patch Bay With Buffered Splitter/Channel Inputs Ideas

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