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  1. Discussion of CCS control for LED/LDR volume adjustment
  2. Small Signal Transistor and Diode Models from NXP
  3. Output Transformer Waveform- Is it good or not?
  4. TL082 Preamp Instability
  5. HELP! line-level crossover design for solar-powered biamped soundsystem
  6. How to integrate Baffle Step Compensation into existing discrete linestage?
  7. Fundamental Oscilliscope Usage
  8. Balanced buffers - analogue volume control
  9. A second order active filter with single supply - Zin ?
  10. Tamradio 600:600 Transformers
  11. Input bias current and impedance of an op amp?
  12. Otari MX7000
  13. Vca's
  14. Optimum value for R(s) in a JFET follower?
  15. Active preamp gain
  16. complementary jfet input trimmer
  17. Looking for a PGA2320 PCB
  18. Looking for discrete high performance linestage design with 12v rails
  19. Which power transformer for low hum?
  20. 2SA1015 SRPP follower bridge mode
  21. H/K 595 subwoofer connect to Aiwa reciever.
  22. Aragon 47k Schematics?
  23. Best OP-amp for EQ circuit?
  24. Broskie
  25. Active Stereo Preamp , OPAMP VS TRANSISTORS , which on would you prefer ?
  26. XLR jacks
  27. Which Aikido?
  28. Electret Mic Power Circuit for PC Input
  29. Soundcraft B100 (TL072...again)
  30. XLR, RCA and CMRR - a few questions
  31. Help Designing Preamp Schematic
  32. Here's a weird enquiry
  33. C1583 & A798
  34. Volume Control with symmetrical out and in
  35. Building a Tee attenuator
  36. Noise in balanced outputs - Parasound
  37. Need some advice on a level booster...
  38. INA134-DRV134 balanced preamp
  39. how to add protection circuits (swith circuit)
  40. resistor(s) in ground paths to reduce hum, etc.
  41. My (quick and dirty) take at a PLLXO for OB, help is welcome
  42. Lundahl LL1530 - audio application?
  43. SP-6 Light with ECC801S
  44. Active crossover help
  45. Line Level Preamp, Using JFETs, in a can.
  46. Replacement push buttons for hafler?
  47. My fuzz pedal project is behaving badly
  48. My fuzz pedal project is behaving badly
  49. Op-amp Upgrade
  50. Output transformers for Line-level signal.
  51. PGA2310 control module
  52. Shields in internally balanced equipment
  53. First effort: MM/MC phono preamp with DC servo
  54. How to figure gyrator treble boost gain
  55. AirTight ATC-2 Preamp Pictures
  56. Need help with the NE5543N opamp
  57. help building a crossover/lowpass filter
  58. Poles and throws?
  59. DC buildup in Linkwitz Transform
  60. BOZ (bride of Zen) advices asked - things to do/avoid
  61. DIY STEREO MIC-PREAMP for DSLR-Video
  62. Adjustable Linkwitz-Riley filter: Help needed with SPICE
  63. Variable active high pass filter .
  64. What advantage to use OP to summing signal ?
  65. Transformer malfunction??'
  66. Fader Penny Giles and Active Level control
  67. Is this filtering really needed ?
  68. Need help with ebay PHONO TURNTABLE PREAMP PREAMPLIFIER PCB DIY KIT
  69. Balanced vs Unbalanced -Basics
  70. Humorous mistake in Douglas Self Active Crossovers book
  71. preamp and tone control circuit with pcb
  72. Noisy 'clickless' analogue switches
  73. Preamp needed, or am I missing something?
  74. Volume Control Clicks
  75. Audio Research SP-10 Clone HELP please
  76. Selector switch
  77. repairing/recycling RCA cable
  78. Klimo Merlin rebuilding
  79. Analog Signal to fire Contact Closure
  80. Cello Palette Style EQ Design (was High End Tone Control)...
  81. LDR attenuators - Better balance with DC bias
  82. Acoustic Guitar Pre/Comp/EQ/Blender/DI
  83. Where is the point of diminishing returns with caps in passive crossovers?
  84. Preamp output protection
  85. Lexicon Master Re-boot?
  86. Grounding in balanced passive pre?
  87. Preamp knob where to buy...
  88. Transcendent Sound GG help
  89. Signal level
  90. Advice on a simple preamp
  91. Balanced and Unbalanced signals in a Control Room Monitor
  92. Audio Delay Circuit
  93. Shielded Umbilical Question
  94. TEAC 80-8 head spec
  95. DC on Lightspeed-attenuator possible
  96. DC on Lightspeed-attenuator possible
  97. Light Dependant Resistor Current Control
  98. Broskie Unbalancer - manual query?
  99. Op-amp Guilt feel.
  100. simple active crossover
  101. Attenuation Versus Gain
  102. fake signal to bypassed inserts
  103. How to Mult (aka split) a line signal into 8 identical buffered outputs... properly!
  104. Mic preamp
  105. Silicon Chip Pre-amp not switching inputs
  106. Making a very simple volume control
  107. consumer --- > commercial
  108. Need advice isolating subwoofer channel from main L/R channels.
  109. What type of diode should i use in this circuit?
  110. Plz advise on balanced pot wiring
  111. Protecting my amp during circuit tests
  112. Pre amp output shorted?
  113. 4 channel mixer circuit?
  114. Wiring a Pot
  115. How to make a phase inverter?
  116. line level volume control
  117. Equalizer
  118. RL passive high pass line level filter
  119. Denon D-75 & diy plinth
  120. Many questions on mhennessy's Hi-Fi preamp (mainly about power-fail detect circuit)
  121. LF03 discrete opamp
  122. passive line level filter question
  123. DIC Integrated amplifier - seventies
  124. Sound Quality on Unity gain opamp
  125. PGA2310 Line Preamplifier + Free Software
  126. Remotely Controlled Motorized Volume Pot.
  127. Preamp Kit - New DIY'er
  128. Pre-Amp Mods - Suggestions
  129. why not use quarter inch stereo jacks for connecting hifi
  130. BSG Technologies QOL "Signal Completion Stage"
  131. What is the best use of 12AT7?
  132. Popping noise on input selector switch
  133. 3 TRS in, 3 TRS out, 1 knob volume.
  134. Fostex Volume Control "PC1EX" - Schematic wanted
  135. Schematic Focusrite Octopre??
  136. multichannel volume control
  137. JC-80 eBay PCBs & Power Train
  138. Parametric EQ values?
  139. Recommend a first diy phono pre-amp?
  140. Phono problems one side working
  141. TL071 question
  142. Forte F44 preamp, DC Voltage leak
  143. To build a high pass RL line level filter
  144. If You Don't Have a SIT, Fake It...
  145. 3 core audio cable
  146. Another Remote Alps
  147. matching sine wave wave file / expert opinion
  148. Can a delay circuit be beneficial between bass and mids?
  149. Exponential programmable resistor
  150. Balanced interconnect with 2 x 75 ohm coax cables?
  151. Volume Control Kit/Controller to work with WMCE-remotes
  152. cs3318 and arduino
  153. Anyone knows if Khozmo guy is still around
  154. What kind of connector is this and how can it be fixed?
  155. "8 ohm 3 way x-over" mod for 4ohm woofer ?
  156. 6SN7 Tube pre
  157. 2 channel to 7.1
  158. Pass Aleph L1.2
  159. Chinese mini VU Meters
  160. Three opamp 24db/oct crossover?
  161. Parametric EQ for subwoofer?
  162. Kit or Behringer ?
  163. Redesigning a cheap obsolete 8-track pre-amp.
  164. Help with circuit for preamp with eq and balanced output powered by phantom power
  165. Inexspensive volume control chips
  166. Linkwitz ASP Custom Build
  167. Shielded cable or faraday cage or both?
  168. Upgraded opamp in preamp and now there is a hum/buzz
  169. GFP-555
  170. mic tube preamp as line stage
  171. AV / HT Preamp
  172. audio matrix
  173. mic pre application buffer op-amp question
  174. Does this preamp look any good?
  175. Replacement for LM833 in active crossover
  176. Not another project yet
  177. RJM Audio B-Board Project
  178. Cause of weak Preamp channel
  179. Schematic Boston PV700
  180. discrete op amp
  181. Resistor between line out and GND: what for?
  182. Recap Rotel RC1070
  183. Speaker selector / level equalizer?
  184. Voltage Readings Following Soldering Error
  185. Selector switch - replacement - shielded wire?
  186. Frequency Response of WW Pots?
  187. Passive pre, adding buffers
  188. AI Modulus preamp...heat damage?
  189. auto level control for input
  190. Which opamp in this preamp circuit?
  191. Audio Pre Amplifier
  192. Cotton OCC 5N Silver Interconnect Cables
  193. Mic Preamp output protection
  194. Krell KAV-250cd Output stage drawn
  195. Stereo to Mono Circuit: need help with capacitor
  196. AD797 Preamp based on stolen trademark
  197. Solderless RCA plugs for DIY interconnects
  198. options for source selector/volume control <100/$150
  199. Pre Amp with pre-out for Arjen Helder Ta2020
  200. Cables: different YES - better ???
  201. Arcam AV9 processor
  202. Looking for unbalanced to balanced transformer
  203. Frequency cut out switches. Graphic EQ.
  204. Stepped attenuator ?
  205. active tri line splitter using BJT transistor
  206. Neotech UPOCC Silver vs HGA Silver
  207. All In One Mixer/PC Project
  208. Sweep Eq
  209. Methods of Handling Various Devices and Grounding - Ground Loop Issues
  210. In-depth analysis of effect of high-quality interconnects
  211. Universal FET buffer / preamplifier
  212. Simple Pre-Amp with Variable High-Pass - This right?
  213. How to derermine the optimum bias resistor value ?
  214. output inductor?
  215. RGB LEDs amp audio level
  216. installing an analog audio output jack on a television?
  217. Help needed for Krell krs-1a preamp
  218. power conditioner project anyone ??
  219. DQ-LP1 Help
  220. upgrading active xover with LM4562
  221. 48VDC Phantom Power switch - seeking advice
  222. Rotel RTC-970 - Remote Controller RR970
  223. bi-amp'd, with passive mid/high ??
  224. Interesting Interconnect Cables
  225. Hum in RC cable
  226. Help for upgrading Pioneer receiver
  227. My attempt at a Monitor Volume Control with headphone outs
  228. Pumpkin Problems
  229. Rod Elliot - Audio Mixing Console (HELP!!)
  230. looking for a 3 way active crossover for diy powered speaker
  231. RFI woes
  232. need info on preamps for use on baf1
  233. Mixer Channel for observation
  234. Help With Existing Crossover Points
  235. stepped aattenuator - stop pops
  236. Adcom GFP-565 Input Selector
  237. Subsonic Filters & Film Caps
  238. DIY build of the Pioneer C-21 preamplifier
  239. Preamplifier with integrated circuits
  240. mixer circuits (looking for simple, but very high quality)...
  241. Subwoofer circuit: Going from speaker level to line level
  242. Adding Phantom Power to old board?
  243. Designing a versatile pre with balanced and unbalanced in/out
  244. Help Pls - Coupling Capacitor
  245. How to pick a good audio transistor?
  246. Volume control question
  247. Loudness stage
  248. Electret microphone Pre-amp
  249. Gold pin tube : does it really matters ?
  250. Mic preamp and high/low impedance technical question

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