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  1. Any suggestions to improve these output and input filters?
  2. simple solution for VU-Meter
  3. Combined Speaker-Amplifier Project
  4. Teac AN-60 Alignment
  5. 2.5v achieves lower distortion on LDR NSL32SR2
  6. Help Gain clone supply PCB design
  7. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  8. 3-way signal splitter
  9. implimenting linkwitz's notch/dip filter for room eq
  10. Anyone seen this EQ before?
  11. ReCapping marantz av-9000 16v 13000uf
  12. Audio Processing
  13. Anyone know what these caps are for?
  14. Is coax needed to wire a microphone?
  15. How do I choose a preamplifier that would be compatible with this microphone?
  16. W06M – Bridge Rectifier, equivalent substitute
  17. Preamplifier kit information
  18. Handling +4dBu/-10dBv and un/balanced
  19. Line receiver and driver pcb?
  20. 2 conductor shielded cable
  22. 20hz high pass on Ashly XR2000 - removable?
  23. Transformer Based Balanced Output & Impedance
  24. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  25. John Bowers Active Control Unit preamp: Info sought
  26. Looking for pointers on first DIY preamp please.
  27. Simple analog vu-meter driver ?
  28. Please pardon the noob question. need guidance
  29. Build a high pass filter for amplifier
  30. Critique on success of this subwoofer cutoff project?
  31. Need gain AMOUNT for mobile phone/pc sources
  32. re-replacing 2sk213/j76 transistors help
  33. Preventing crossover between mixers
  34. RCA LMI- 32215 A - for recording studio.
  35. Rane pot help please...
  36. Simple low voltage tube preamp stage
  37. HELP me design a discrete current sinking positive V regulator
  38. True Biamping and Active crossovers info request
  39. Question about hypex balanced vs unbalanced
  40. Soundcraftsmen
  41. very small noob question project 88
  42. Help with cable conundrum!
  43. P7 Pre amp Trouble
  44. Party-line / Full-duplex intercom - mixing audio signals
  45. ZSP1 preamp gain
  46. Acurus L10 Powersupply
  47. Building an Analog to Digital Converter Unit...
  48. DIY pre amp board
  49. Opamp power bypass
  50. Tone Control - Volatage range for TL072/LF252-N
  51. Stereo volume attenuation
  52. Quad channel volume control
  53. Work? L, R RCA inputs -> 1 XLR out?
  54. Impedance matching pre -> power.
  55. LME49740 vs TL074, design considerations and stability
  56. Solid state R2R attenuator using analog switches or multiplying DAC
  57. MF nuvista source selector problem again
  58. What do we think about solid-state potentiometers?
  59. TubeCAD's ACF2 as a active crossover
  60. Phaseca--My new diy pre amp
  61. looking for bass treble pcb pattern
  62. Mobile recording using linein
  63. [Need] simple preamp and LPF based on 5532 for digital sources
  64. wall-based trasformer volume control as passive pre?
  65. noob stab in the dark - riaa preamp
  66. Oscillating Op-Amp
  67. Preamp for shotgun mic
  68. Mark Levinson No 38, Need Help
  69. Help! Kenwood Basic C-2 left channel out (phono only)
  70. Signal delay schematic
  71. Adding 4 channels to a 2 channel input on HT amp
  72. vumeter (stereo, mono)
  73. Acquired Some Elan Components, What are They?
  74. Pre-mix for boombox
  75. Reed Switch Audio Attenuator
  76. "Balanced" PGA2311?
  77. 2 way crossover on Chinese pcbs
  78. SE to Balanced pre question
  79. Interconnect Ground Cable Ground Loops
  80. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  81. Any AIKIDO-philes who know why Broskie has changed the formula
  82. One More Overcomplicated Mic Preamp
  83. Problems with subwoofer phase control picking up noise
  84. IC's get hammered
  85. Left/Right channel balance control
  86. Potentiometer Selection
  87. All-In-One Preamp Circuit
  88. Line level mixing
  89. Booze Hounds Labs Phono any good?
  90. PLLXO - Am I doing this right?
  91. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  92. Switching Noise Between Preamps
  93. Bluetooth Lightspeed attenuator
  94. Help getting 5.1 preamp from Ebay repaired please!
  95. Should using balanced cables to amplified monitors improve sound ?
  96. Apox Audio preamp reborn with the power of Arduino
  97. Does an Op Amp Voltage Follower Operate in Class A?
  98. My boozehound phono stage build
  99. Pre amp kit
  100. balanced preamplifier based on LME49990
  101. Merging two channels with passive low passes
  102. Old Colony Sound Lab T-2D Line Amp - Any Info?
  103. Impedance Bridging and Isolation Tranformer
  104. TDA7315 chip parameters interpretation
  105. MFP-102 N fet compatibility
  106. What is the effect of a 22K res in series with a 25K volume pot?
  107. Senior Project: Bandpass Equalizer pedal
  108. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  109. ORTF is best for stereo recording
  110. A zero impedance preamp and CMRR
  111. good preamp
  112. calculate crossover with Re or impedance ?
  113. Op-Amp Preamp Circuit for Electret Mic
  114. Simple Router (then bass management)
  115. Second order shelving filter
  116. Help with component selection.
  117. passive to tame 8khz peak
  118. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  119. Adcom GFP-750 -Needs Repair
  120. Variable gain op-amp for volume control (vs normal voltage divider pot)
  121. Germanium Transistor and FET opamp
  122. 5 zone preamp based on Arduino controlled optocoupler
  123. How to select the right impedance for volume control
  124. In vehicle Pre-amp for mic (12+ VDC)
  125. Resistor-Diode-Relay Logic Source Selector
  126. 3 into 1 input the other way round
  127. Nagging Ground Issue
  128. Looking for Princeton Applied Research 115 MANUAL
  129. Active Band Pass Filter with +/- Gain
  130. Components source
  131. Guitar ABY or Headphone Amplifier?
  132. rod elliot p88 preamp knob arrangment
  133. C-Mos opamps in audio preamplifiers
  134. Cheap, balanced XLR passive pre?
  135. DIY crossover - Sallen-Key?
  136. Hafler 915 preamp cap question
  137. analog 3.5mm to digital usb possible?
  138. Mixer Pre-amp
  139. DIY tube preamp - help with choosing the right kit
  140. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  141. MC-22 schematic question
  142. unbalanced/balanced to balanced converter
  143. My line buffer preamp
  144. Attenuating Preamp Filter Question
  145. biamping with one DAC
  146. Audiophile active crossover
  147. adding EQ without screwing up sound; few questions...
  148. SSTART Pcb and power supply project
  149. Help with a simple envelop detector filter. (averaging the signal)
  150. audio output switch? Monitor Controller
  151. Very simple volume control with IR remote
  152. JFETs and MOSFETs biasing questions
  153. I need advise on audio mixing boards?
  154. pre amp output
  155. OPA134 Amp Help
  156. OPA134
  157. Capacitors voltage rating
  158. Capacitors voltage rating
  159. attenuation on dac output with U-pad
  160. passive preamp
  161. preamp necessary?
  162. Will phono pre > passive pre > amp work well enough?
  163. 60Hz hum problem, please help
  164. distortion cancellation for diode limiter
  165. electret mic preamp for micro ADC
  166. Understanding "Voltage - Input Offset" Parameter
  167. Schade MOSFET + Feedback Line Amp
  168. Preamp or receiver?
  169. Sony BX-270 Datasheet Wanted
  170. Classe Audio DR6 Bias
  171. Dual gang potentiometer for 'mixer'
  172. Aikido Preamp Bass & Treble Controls
  173. Tried active crossover, mean hum...
  174. How to use TDA7439 for center and subwoofer
  175. Active notch filter
  176. simple pre amp volume control with seperate mono out
  177. Help me wire up my SUT correctly (Tamura TKS-27)
  178. How can I split a mixer bus?
  179. Beau's Bias Circuit Schematic
  180. What should be included in a subwoofer lowpass filter?
  181. Potentiometer volume control treble loss bleed
  182. Adcom GFP 815 Pre Amp-Any users?
  183. speaker out to preamp out while driving speaker
  184. 6dB Active crossover
  185. Replacing volume pot from 100K to 50K reduces gain?
  186. Dual Ganged Stereo Volume Control
  187. McIntosh/Conrad Johnson pairing
  188. Input Impedance Question
  189. Active studio monitors/ crossovers
  190. new discrete opamp for line preamplifier
  191. Music Angel Pre Amp
  192. Tilt Equalizer Filter
  193. Parametric EQ based bass boost circuit
  194. Power On Delay/Loss of AC Detector Relay
  195. Balanced Line Driver with DRV134
  196. PGA3211 6.1 assembling
  197. PGA2311 code
  198. SMD High-Voltage Discrete Diamond Buffer
  199. How best to implement image mode controls
  200. Preamp has unwanted delay (and hum)
  201. Pot values in LM1036 preamp circuit
  202. simple three steps attenuator
  203. Behringer Eurorack UB1622fx PRO schematic
  204. Need help with Coustic XM-5e Crossover
  205. Small Fader + Volume control for Car
  206. PGA2311 Evaluation
  207. Are these pots what I need for my preamp?
  208. IR Remote Control
  209. That Corporation 1200 , 1203 , 1206 circuits
  210. portable set field mixer/ mic pre
  211. Compact simple EQ
  212. Digitally controlled pot distortion?
  213. Help me Choose Between A and B
  214. Quad Eight Electronics EQ712
  215. Adding a line level output to PGA2311 preamp
  216. Using Joachim Gerhard Filter Buffers as balanced crossover
  217. Impedance measuring jig and iSEMcon kit
  218. LM1036N Potentiometer Type
  219. 4558d
  220. 10M45 as simple preamp...
  221. Kenwood c-2 balance pot
  222. Attenuator Impedance for Adcom GFA-535?
  223. McIntosh C712 Preamplifier - Schematic wanted
  224. Speaker Combination in Custom Installation, please help
  225. 5 band equalizer, need help!!
  226. Parasound P/HP-850 Preamp Problem
  227. Crossover between pre and power amp for sub
  228. miniDSP pre-amp & volume control idea
  229. Klark Teknik Upgrae for 2ch
  230. signal level
  231. THAT 1200 Balaced Receiver IC?
  232. Patch Bay With Buffered Splitter/Channel Inputs Ideas
  233. Can't seem to get OpAmps to work
  234. Yamaha Equalizer 1027 service manual wanted
  235. Yamaha RX-V480 Tuner / FM Bands Wacky
  236. Discrete MOSFET 12db High Pass Filter
  237. ESP Proyect97 PCB
  238. Christmas Project - Audio Analyser
  239. HELP : what wattage for resistor ?
  240. x'over for a sub?
  241. Overlay stereo with mono, without losing stereo?
  242. Hi Level Amp output connect to RCA input
  243. Uneven Hafler 110 output
  244. Preamp-Buffers - simple idea
  245. OPA1612 compared to OPA2228(and a lil question about caps)
  246. How to wire up Audio Matching Transformer?
  247. VU meter arduino project help
  248. 8ch ADC
  249. Passive mixing network -- calculating total loss?
  250. DIY 3 way active crossover: as Christmas Holiday Project

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