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  1. 7.1 Switcher
  2. How to check circuit for oscillation?
  3. How to "Sum" L+R signals for a mono sub output?
  4. need btl schematic using op-amp
  5. 600:10k line stage transformers any use?
  6. JC-2 Clone Build
  7. Carver C1 preamp loud static "pop"
  8. Understanding and optimizing Ashly xover help?
  9. Current Feedback Opamps in simulation and practice.
  10. fluorescent peak meter
  11. DIY Preamp recommendations
  12. Active Crossover Design: How the drivers influence filter type/topology/slope?
  13. Sumo Athena II balanced?
  14. help me, please find a service manual for dbx386 for repair
  15. PGA2310 impedance questions
  16. Remote control kaput?
  17. Pre amplifier or not?
  18. line level strength - big boost required
  19. input selector, to use resistors at the inputs or not
  20. AH Pre line stage
  21. internal cable recommendation
  22. want to make a splitter box for use with mixer inserts
  23. Modding Ecler AC-6 talkover release
  24. ADC Sound Shaper 3 EQ
  25. Schematic wanted for parametric Equalizers from Behringer and IBANEZ
  26. What else? A PGA-preamplifier...
  27. Modding My ADC SS100-SL Equalizer
  28. Preamp Gain for NE5532
  29. Gain regulation on Counterpoint SA3000
  30. Any analog xovers as good as Ashly XR series?
  31. THAT 5171 Controlled By Arduino?
  32. Ground Loop in UREI 1176 compressor
  33. Handling inactive inputs in source selector
  34. How to split output from phono stage
  35. low pass and subsonic filter
  36. BEQ circuit
  37. Adding in RCA Outputs
  38. Wanted: 80Hz Linkwitz-Riley 24hz/octive low-pass filter
  39. Jumper wires & RFI in preamp
  40. Help with component selection for filter
  41. INKEL MX991
  42. Active Crossover Adjustment
  43. CS3318 based preamp - layout
  44. EAD Theatermaster Classic won't operate
  45. filter Q Question
  46. Buffering two signals together
  47. How to bias 2SK170BL in Boozehound Labs phono pre?
  48. Can I make a really simplistic line-level signal go mono one way, stereo in parallel?
  49. Aikido - approximate input impedance
  50. Ultimate analogue tone control or an audiophool overkill? :)
  51. A remote control preamp in the works
  52. Custom Equalizer Design needed
  53. Multichannel preamp
  54. Hafler Iris Preamp balance issue - fixed
  55. Acurus L10 Preamp Mods & Schematic
  56. Home made DSP / FPGA digital audio mixer
  57. Soundcraft LX7 Replacement parts
  58. Bonsai's practical buffer
  59. Help needed with an audio signal splitter solution
  60. Crosstalk?
  61. i want to throw something
  62. Optimizing resistor placement Vishay TX2575
  63. Input impedance of PRE vs sensitivity to disturbance
  64. PIC Controlled PGA 2320 8 Channel Preamp
  65. How to change a degree of volume pot rotation by remote control?
  66. tamura input transformer shield
  67. Need a help: Mark Levinson No26.
  68. LME49720 Pre amp PCB/Kit
  69. Faulty mixer inputs
  70. Basic home cinema wiring advice
  71. Diamond Cascode, a Diamond-like buffer/current booster
  72. Unusual high-pitched whistle caused by my Audio Pre-AMP
  73. Looking to build stereo mixer but can't find many schematics!
  74. Aureus preAmplifier
  75. strange! LM-4562 question
  76. Tube Preamp hummmmmm
  77. LCDuino-1 Processor, using non-latching relays help
  78. CS3318 PCB Layout
  79. Levels in an active three-way system
  80. Source selector using Analog switches or multiplexers - opinions?
  81. Yet another PGA23xx board...
  82. Concentric shaft Alps "Blue" pot
  83. Cleaning dusty printed circuit boards
  84. ad797 plus buf634
  85. Bypass - ceramic or film?
  86. tweeter crossover
  87. This pre-amp good?
  88. Remote Control Pot
  89. VU Meter ballistics
  90. The "AmpDuino" project
  91. Capacitors at 50v vs 25v on replacement in preamp power supply?
  92. Knocking sound coming from PCB
  93. Versatile quad-amp card
  94. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  95. Just built a Hagerman Cornet 2 phono pre
  96. ad797 questions
  97. [Newbie]Audio bandpass filter design
  98. Wideband DCA preamp with shunt PS
  99. 3-way input selector + Attenuator + Balanced outputs?
  100. subwoofer circuit
  101. Motorised Volume Pot - Controller isolation
  102. Audio compressor to lower TV commercials-help needed
  103. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  104. 2ch passive stereo summing circuit?
  105. designing a 1-Hz lowpass with no DC error
  106. What is a preamp actually doing?
  107. Choosing attenuator for MF X-10D Clone
  108. some questions about DC servo mic pre's
  109. Need hekp with how to select a preamp
  110. Weird problem with a preamp with 3 band EQ module
  111. TEAC VU Meter Hookup
  112. input transformer frequency response?
  113. Help wanted checking vero layout for active 4 channel mixer
  114. Simple non-digital input selector
  115. dc on only one primary of the line trafo
  116. Volume potmeter Technics Su 8600
  117. Servo on non-inverting opamp ?
  118. Any suggestions to improve these output and input filters?
  119. simple solution for VU-Meter
  120. Combined Speaker-Amplifier Project
  121. Teac AN-60 Alignment
  122. 2.5v achieves lower distortion on LDR NSL32SR2
  123. Help Gain clone supply PCB design
  124. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  125. 3-way signal splitter
  126. implimenting linkwitz's notch/dip filter for room eq
  127. Anyone seen this EQ before?
  128. ReCapping marantz av-9000 16v 13000uf
  129. Audio Processing
  130. Anyone know what these caps are for?
  131. Is coax needed to wire a microphone?
  132. How do I choose a preamplifier that would be compatible with this microphone?
  133. W06M Bridge Rectifier, equivalent substitute
  134. Preamplifier kit information
  135. Handling +4dBu/-10dBv and un/balanced
  136. Line receiver and driver pcb?
  137. 2 conductor shielded cable
  138. HIGHLEVEL INPUT IN PLATE AMP!
  139. 20hz high pass on Ashly XR2000 - removable?
  140. Transformer Based Balanced Output & Impedance
  141. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  142. John Bowers Active Control Unit preamp: Info sought
  143. Looking for pointers on first DIY preamp please.
  144. Simple analog vu-meter driver ?
  145. Please pardon the noob question. need guidance
  146. Build a high pass filter for amplifier
  147. Critique on success of this subwoofer cutoff project?
  148. Need gain AMOUNT for mobile phone/pc sources
  149. re-replacing 2sk213/j76 transistors help
  150. Preventing crossover between mixers
  151. RCA LMI- 32215 A - for recording studio.
  152. Rane pot help please...
  153. Simple low voltage tube preamp stage
  154. HELP me design a discrete current sinking positive V regulator
  155. True Biamping and Active crossovers info request
  156. Question about hypex balanced vs unbalanced
  157. Soundcraftsmen
  158. very small noob question project 88
  159. Help with cable conundrum!
  160. P7 Pre amp Trouble
  161. Party-line / Full-duplex intercom - mixing audio signals
  162. ZSP1 preamp gain
  163. Acurus L10 Powersupply
  164. Building an Analog to Digital Converter Unit...
  165. DIY pre amp board
  166. Opamp power bypass
  167. Tone Control - Volatage range for TL072/LF252-N
  168. Stereo volume attenuation
  169. Quad channel volume control
  170. Work? L, R RCA inputs -> 1 XLR out?
  171. Impedance matching pre -> power.
  172. LME49740 vs TL074, design considerations and stability
  173. Solid state R2R attenuator using analog switches or multiplying DAC
  174. MF nuvista source selector problem again
  175. What do we think about solid-state potentiometers?
  176. TubeCAD's ACF2 as a active crossover
  177. Phaseca--My new diy pre amp
  178. looking for bass treble pcb pattern
  179. Mobile recording using linein
  180. [Need] simple preamp and LPF based on 5532 for digital sources
  181. wall-based trasformer volume control as passive pre?
  182. noob stab in the dark - riaa preamp
  183. Oscillating Op-Amp
  184. Preamp for shotgun mic
  185. Mark Levinson No 38, Need Help
  186. Help! Kenwood Basic C-2 left channel out (phono only)
  187. Signal delay schematic
  188. Adding 4 channels to a 2 channel input on HT amp
  189. vumeter (stereo, mono)
  190. Acquired Some Elan Components, What are They?
  191. Pre-mix for boombox
  192. Reed Switch Audio Attenuator
  193. "Balanced" PGA2311?
  194. 2 way crossover on Chinese pcbs
  195. SE to Balanced pre question
  196. Interconnect Ground Cable Ground Loops
  197. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  198. Any AIKIDO-philes who know why Broskie has changed the formula
  199. One More Overcomplicated Mic Preamp
  200. Problems with subwoofer phase control picking up noise
  201. IC's get hammered
  202. Left/Right channel balance control
  203. Potentiometer Selection
  204. All-In-One Preamp Circuit
  205. Line level mixing
  206. Booze Hounds Labs Phono any good?
  207. PLLXO - Am I doing this right?
  208. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  209. Switching Noise Between Preamps
  210. Bluetooth Lightspeed attenuator
  211. Help getting 5.1 preamp from Ebay repaired please!
  212. Should using balanced cables to amplified monitors improve sound ?
  213. Apox Audio preamp reborn with the power of Arduino
  214. Does an Op Amp Voltage Follower Operate in Class A?
  215. My boozehound phono stage build
  216. Pre amp kit
  217. balanced preamplifier based on LME49990
  218. Merging two channels with passive low passes
  219. Old Colony Sound Lab T-2D Line Amp - Any Info?
  220. Impedance Bridging and Isolation Tranformer
  221. TDA7315 chip parameters interpretation
  222. MFP-102 N fet compatibility
  223. What is the effect of a 22K res in series with a 25K volume pot?
  224. Senior Project: Bandpass Equalizer pedal
  225. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  226. ORTF is best for stereo recording
  227. A zero impedance preamp and CMRR
  228. good preamp
  229. calculate crossover with Re or impedance ?
  230. Op-Amp Preamp Circuit for Electret Mic
  231. Simple Router (then bass management)
  232. Second order shelving filter
  233. Help with component selection.
  234. passive to tame 8khz peak
  235. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  236. Adcom GFP-750 -Needs Repair
  237. Variable gain op-amp for volume control (vs normal voltage divider pot)
  238. Germanium Transistor and FET opamp
  239. 5 zone preamp based on Arduino controlled optocoupler
  240. How to select the right impedance for volume control
  241. In vehicle Pre-amp for mic (12+ VDC)
  242. Resistor-Diode-Relay Logic Source Selector
  243. 3 into 1 input the other way round
  244. Nagging Ground Issue
  245. Looking for Princeton Applied Research 115 MANUAL
  246. Active Band Pass Filter with +/- Gain
  247. Components source
  248. Guitar ABY or Headphone Amplifier?
  249. rod elliot p88 preamp knob arrangment
  250. C-Mos opamps in audio preamplifiers

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