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  1. Adjustable Linkwitz-Riley filter: Help needed with SPICE
  2. Variable active high pass filter .
  3. What advantage to use OP to summing signal ?
  4. Transformer malfunction??'
  5. Fader Penny Giles and Active Level control
  6. Is this filtering really needed ?
  7. Need help with ebay PHONO TURNTABLE PREAMP PREAMPLIFIER PCB DIY KIT
  8. Balanced vs Unbalanced -Basics
  9. Humorous mistake in Douglas Self Active Crossovers book
  10. preamp and tone control circuit with pcb
  11. Noisy 'clickless' analogue switches
  12. Preamp needed, or am I missing something?
  13. Volume Control Clicks
  14. Audio Research SP-10 Clone HELP please
  15. Selector switch
  16. repairing/recycling RCA cable
  17. Klimo Merlin rebuilding
  18. Analog Signal to fire Contact Closure
  19. Cello Palette Style EQ Design (was High End Tone Control)...
  20. LDR attenuators - Better balance with DC bias
  21. Acoustic Guitar Pre/Comp/EQ/Blender/DI
  22. Where is the point of diminishing returns with caps in passive crossovers?
  23. Preamp output protection
  24. Lexicon Master Re-boot?
  25. Grounding in balanced passive pre?
  26. Preamp knob where to buy...
  27. Transcendent Sound GG help
  28. Signal level
  29. Advice on a simple preamp
  30. Balanced and Unbalanced signals in a Control Room Monitor
  31. Audio Delay Circuit
  32. Shielded Umbilical Question
  33. TEAC 80-8 head spec
  34. DC on Lightspeed-attenuator possible
  35. DC on Lightspeed-attenuator possible
  36. Light Dependant Resistor Current Control
  37. Broskie Unbalancer - manual query?
  38. Op-amp Guilt feel.
  39. simple active crossover
  40. Attenuation Versus Gain
  41. fake signal to bypassed inserts
  42. How to Mult (aka split) a line signal into 8 identical buffered outputs... properly!
  43. Mic preamp
  44. Silicon Chip Pre-amp not switching inputs
  45. Making a very simple volume control
  46. consumer --- > commercial
  47. Need advice isolating subwoofer channel from main L/R channels.
  48. What type of diode should i use in this circuit?
  49. Plz advise on balanced pot wiring
  50. Protecting my amp during circuit tests
  51. Pre amp output shorted?
  52. 4 channel mixer circuit?
  53. Wiring a Pot
  54. How to make a phase inverter?
  55. line level volume control
  56. Equalizer
  57. RL passive high pass line level filter
  58. Denon D-75 & diy plinth
  59. Many questions on mhennessy's Hi-Fi preamp (mainly about power-fail detect circuit)
  60. LF03 discrete opamp
  61. passive line level filter question
  62. DIC Integrated amplifier - seventies
  63. Sound Quality on Unity gain opamp
  64. PGA2310 Line Preamplifier + Free Software
  65. Remotely Controlled Motorized Volume Pot.
  66. Preamp Kit - New DIY'er
  67. Pre-Amp Mods - Suggestions
  68. why not use quarter inch stereo jacks for connecting hifi
  69. BSG Technologies QOL "Signal Completion Stage"
  70. What is the best use of 12AT7?
  71. Popping noise on input selector switch
  72. 3 TRS in, 3 TRS out, 1 knob volume.
  73. Fostex Volume Control "PC1EX" - Schematic wanted
  74. Schematic Focusrite Octopre??
  75. multichannel volume control
  76. JC-80 eBay PCBs & Power Train
  77. Parametric EQ values?
  78. Recommend a first diy phono pre-amp?
  79. Phono problems one side working
  80. TL071 question
  81. Forte F44 preamp, DC Voltage leak
  82. To build a high pass RL line level filter
  83. If You Don't Have a SIT, Fake It...
  84. 3 core audio cable
  85. Another Remote Alps
  86. matching sine wave wave file / expert opinion
  87. Can a delay circuit be beneficial between bass and mids?
  88. Exponential programmable resistor
  89. Balanced interconnect with 2 x 75 ohm coax cables?
  90. Volume Control Kit/Controller to work with WMCE-remotes
  91. cs3318 and arduino
  92. Anyone knows if Khozmo guy is still around
  93. What kind of connector is this and how can it be fixed?
  94. "8 ohm 3 way x-over" mod for 4ohm woofer ?
  95. 6SN7 Tube pre
  96. 2 channel to 7.1
  97. Pass Aleph L1.2
  98. Chinese mini VU Meters
  99. Three opamp 24db/oct crossover?
  100. Parametric EQ for subwoofer?
  101. Kit or Behringer ?
  102. Redesigning a cheap obsolete 8-track pre-amp.
  103. Help with circuit for preamp with eq and balanced output powered by phantom power
  104. Inexspensive volume control chips
  105. Linkwitz ASP Custom Build
  106. Shielded cable or faraday cage or both?
  107. Upgraded opamp in preamp and now there is a hum/buzz
  108. GFP-555
  109. mic tube preamp as line stage
  110. AV / HT Preamp
  111. audio matrix
  112. mic pre application buffer op-amp question
  113. Does this preamp look any good?
  114. Replacement for LM833 in active crossover
  115. Not another project yet
  116. RJM Audio B-Board Project
  117. Cause of weak Preamp channel
  118. Schematic Boston PV700
  119. discrete op amp
  120. Resistor between line out and GND: what for?
  121. Recap Rotel RC1070
  122. Speaker selector / level equalizer?
  123. Voltage Readings Following Soldering Error
  124. Selector switch - replacement - shielded wire?
  125. Frequency Response of WW Pots?
  126. Passive pre, adding buffers
  127. AI Modulus preamp...heat damage?
  128. auto level control for input
  129. Which opamp in this preamp circuit?
  130. Audio Pre Amplifier
  131. Cotton OCC 5N Silver Interconnect Cables
  132. Mic Preamp output protection
  133. Krell KAV-250cd Output stage drawn
  134. Stereo to Mono Circuit: need help with capacitor
  135. AD797 Preamp based on stolen trademark
  136. Solderless RCA plugs for DIY interconnects
  137. options for source selector/volume control <100/$150
  138. Pre Amp with pre-out for Arjen Helder Ta2020
  139. Cables: different YES - better ???
  140. Arcam AV9 processor
  141. Looking for unbalanced to balanced transformer
  142. Frequency cut out switches. Graphic EQ.
  143. Stepped attenuator ?
  144. active tri line splitter using BJT transistor
  145. Neotech UPOCC Silver vs HGA Silver
  146. All In One Mixer/PC Project
  147. Sweep Eq
  148. Methods of Handling Various Devices and Grounding - Ground Loop Issues
  149. In-depth analysis of effect of high-quality interconnects
  150. Universal FET buffer / preamplifier
  151. Simple Pre-Amp with Variable High-Pass - This right?
  152. How to derermine the optimum bias resistor value ?
  153. output inductor?
  154. RGB LEDs amp audio level
  155. installing an analog audio output jack on a television?
  156. Help needed for Krell krs-1a preamp
  157. power conditioner project anyone ??
  158. DQ-LP1 Help
  159. upgrading active xover with LM4562
  160. 48VDC Phantom Power switch - seeking advice
  161. Rotel RTC-970 - Remote Controller RR970
  162. bi-amp'd, with passive mid/high ??
  163. Interesting Interconnect Cables
  164. Hum in RC cable
  165. Help for upgrading Pioneer receiver
  166. My attempt at a Monitor Volume Control with headphone outs
  167. Pumpkin Problems
  168. Rod Elliot - Audio Mixing Console (HELP!!)
  169. looking for a 3 way active crossover for diy powered speaker
  170. RFI woes
  171. need info on preamps for use on baf1
  172. Mixer Channel for observation
  173. Help With Existing Crossover Points
  174. stepped aattenuator - stop pops
  175. Adcom GFP-565 Input Selector
  176. Subsonic Filters & Film Caps
  177. DIY build of the Pioneer C-21 preamplifier
  178. Preamplifier with integrated circuits
  179. mixer circuits (looking for simple, but very high quality)...
  180. Subwoofer circuit: Going from speaker level to line level
  181. Adding Phantom Power to old board?
  182. Designing a versatile pre with balanced and unbalanced in/out
  183. Help Pls - Coupling Capacitor
  184. How to pick a good audio transistor?
  185. Volume control question
  186. Loudness stage
  187. Electret microphone Pre-amp
  188. Gold pin tube : does it really matters ?
  189. Mic preamp and high/low impedance technical question
  190. Studiomaster 16 x 4 Console
  191. Portable EQ? - Battery Power & SMALL
  192. DIY Tube Equalizer
  193. Using INA217 for Microphone Pre-amp
  194. Here's my DIY passive attenuator / pre / integrated DAC
  195. Basic questions on passive line-level XOs and with bi-amping
  196. Perreaux SM2 Custom
  197. Luxman A522 tonearm?
  198. passive switcher/splitter for monitor controller
  199. XO Components
  200. balanced to unbalanced convertor
  201. CD vs LP
  202. Stan Curtis site
  203. Counterpoint 5.1 Issue
  204. Ebay preamp FET
  205. Some help with high end input selector.
  206. Crossover help!!
  207. Help With Crossover 3-Way Seas 9.1 Home Theater
  208. Simple, good quality equalizer?
  209. Passive Balanced switching and Relay questions!!
  210. Preout mod
  211. remote control unit
  212. Schematic For Vendetta Xover
  213. One of best sounded Line Pre-/RIAA Head Amp from PureAudio-who have heard ?
  214. LDR att. L+R imbalance?
  215. Schematics needed for 3V 1KHz Sine wave generator
  216. is this a balanced input preamp? help m please?
  217. Copland CTA305 schematic
  218. just got a B&K CS-117, lets take a look inside...
  219. Diamond buffer kits any good for preamp?
  220. Analog Multichannel like ProLogic and ProLogic 2 (II) which professional Models
  221. JC-80 eBay PCBs
  222. Connecting many audio output devices to one input device
  223. BBE FJB-200X
  224. Help needed -Electrocompaniet EC4.7 preamp
  225. Improving rejection ratio of subtraction circuit
  226. Delay line for front channel
  227. Wireless analog connection TV -> amp?
  228. Op Amp Rail Splitter Question
  229. Substitution for NEC MuPC812C IC in Nakamichi CA-7A?
  230. Preamp Impedance Question
  231. tone control schematics please
  232. Avoid Potential Groundloop Problems in Headphone Amp
  233. DIY Input isolation filter
  234. Vishay/Dale RN60C or RN55E?
  235. Software for RIAA
  236. RTP3D instructions
  237. Adding an fx send/return to a mixer
  238. lme49710 preamp from china
  239. High gain pre amp noise problems.
  240. New black Jolida JD9 w pics.
  241. Math expression for parametric EQ project
  242. Passive Balanced Volume Control Questions
  243. XLR switcher
  244. Building a Stereo Equalizer
  245. Phase extraction!!!
  246. Is the blue velvet Alps still best price/performance pot?
  247. Preamp Capacitor Questions
  248. Yamaha Promix 01
  249. Q: Converting 5k pot to 20k pot
  250. Anthem D2v Mod

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