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  1. Request active sub xo schematic
  2. Multichannel splitter and gain structure control box
  3. compact stackable relay attenuator - something new
  4. DIY Crossover/Filter: Power Handling
  5. Getting to know the DOODs ...
  6. LED battery indicator
  7. LME49713
  8. Tube preamp kit from ebay - worth my time?
  9. small pre-amp control board design help, I will pay :-)
  10. Value of Stepped Attenuator for Passive Amp.
  11. Differential Line Driver - Impedance Questions
  12. opa 2889 buffer circuit
  13. Help needed with diy outpout switcher relay based
  14. How to make a volume control 50cm from pre-amp?
  15. MAT02 transistors on eBay, are they genuine?
  16. Newb interested in DIY preamp
  17. Help hooking up a car VU meter unit to a home AV reciever
  18. Modular Preamplifier with IC Class A (SAM Electronic Circuits)
  19. Discrete opamp vs regular op amps
  20. Bob Cordell's VinylTrak
  21. NE5532 Tone Control
  22. Muting arrangements for ESP kits: P05B and P09B
  23. Schematics for c3m based preamp
  24. TA 377A preamp
  25. preamp and active filter for class AB amp
  26. Getting a PGA2310 to be silent
  27. SPL EQ Magix studio mic preamp
  28. What's wrong with this typicial preamp circuit?
  29. How Many Line-Level Components?
  30. Need to make a simple balance control
  31. DRV134 and protection diodes
  32. Passive line level 3th order RC XO with no insertion losses?
  33. That 1646 balanced line driver PCB
  34. Help with a PLLXO
  35. LME49990 design note
  36. Cg in THAT 1512
  37. Transistor Preamp Design for ADC
  38. P1 preamplifier
  39. MUSES 72320 electronic volume
  40. DIY 1/2-inch Measurement Microphone
  41. Adcom GTP-450 - Right Channel Fades Out
  42. Passive pre for my AudioSector
  43. Capacitive crosstalk between input/output wiring
  44. Cantilevered-Cascode Buffer (CCB) aka LinuxBuffer
  45. Accelerometer to audiointerface
  46. Home Theater bypass for a tube pre amp - Help!!!
  47. Ultrabass, psychoacoutstic low bass for little speakers
  48. Discrete Opamp test circuits
  49. Inverted Polarity of tube Pre-Amps
  50. Looking For Someone To Build A Vandersteen X-2
  51. Configurable active crossover - Newbie jumping in feet first
  52. Mic Preamp Improvements? (Soundcraft 800B)
  53. electret mic preamp gain
  54. Question about active crossover
  55. Rod Elliott ESP opamp pre's question
  56. Design questions for opamp-based preamp
  57. Preamp with remote using radio not ir
  58. Squeaking Noise with 48V in DAV BG1
  59. I need mini Pre-amp board, please help
  60. IS THIS EARTH LOOP,LEAKING CAPS OR BROKEN LINK?
  61. looking to build a "classic" tube compressor
  62. lm833 single supply
  63. How to protect device from contamination through output
  64. Lundahl LL1545A hookup question...
  65. Inverting rail to rail unity buffer
  66. Subwoofer Controller Kit - Altronics Kit No K5562
  67. Replacement cap for Wima MKP10 0,047UF
  68. Programming of Oxmoor equalizers via PA-422
  69. Help in choosing a potentiometer as a "Passive preamplifier"
  70. Test IC TL074 CN
  71. Relay audio switcher
  72. Analog audio switcher
  73. BSS FDS 340 crossover
  74. Discrete Logic ABX Switch Box
  75. Audio System Controller
  76. the definitive opamp decouplig question
  77. buffer stages performance
  78. Rolling the RANE AC23
  79. Automatic Line level Attenuation Circuit
  80. Check my Opamp Preamp Please
  81. Choosing an active 3-way crossover
  82. Please suggest to me the best affordable LDR preamp kits
  83. Custom Rotary DJ mixer.
  84. Programmer-help for fleabay-remote-kit
  85. Wiring advice for internal pre amp inputs
  86. Discrete Opamp Open Design
  87. microprocessor And control
  88. Latest project.
  89. Remote control won't shut up
  90. Looking to DIY a DI box -10dBv to +4dBu
  91. pre amp suggestions, DIY or Non DIY, Im easy
  92. Musical Fidelity Pre Amp II
  93. Help with DIY passive balanced line level attenuator pads.
  94. RF-blocking???
  95. Jfet Line preamp, to cascode or not.
  96. Mic pre strange high-freq boost (what is broken here?)
  97. New pre amp coming. Change over to 115V help...
  98. XO of Mission 770mk2
  99. Equaliser design for a total n00b
  100. Trying to remote control volume on vintage HK
  101. Passive Pre Chassis and Budget Allocation
  102. Linkwitz Transforms
  103. INA217 is noisy
  104. need sound attenuator
  105. NAIM NAC 42.5 Vintage for my updated NYTECH CPA 602 - 2012
  106. Volume Control Problem
  107. Balanced Signal over 500 Metres!
  108. Single voltage powered Tone Control
  109. PGA2320 and Atmega8 Bascom Source Code Problem
  110. Tone Control Filter
  111. phase linear filters - any good?
  112. Summing (2x) opposite-phase signals with Transformers
  113. A circuit to monitor the analog audio line level
  114. diy Pre-amp question
  115. Critique please: Analogue -> Digital (TOS-LINK)
  116. Circuit Diagram wanted
  117. Xkitz 2-way Active Crossover Kit
  118. Need orientation with tweaking a TASCAM MF-P01
  119. Connecting Multiple op amp inputs from a single op amp output
  120. digital output
  121. Balanced Buffer Needed with a Balanced Volume Control?
  122. $150-200$ Preamp Build?
  123. Balanced tube preamplifier: suggestions?
  124. Adding summed output for sub
  125. Please help me understand this circuit...newbie here
  126. lpf and hpf setting.
  127. After search...need schematic to stereo preamp with only 4 bjt transistors
  128. Help with Zero Field input circuit
  129. The XCEN -- Balanced to Single Ended Converter
  130. Building active cross-overs into multiple power amps?
  131. "Firefly" Unity Gain Buffer
  132. Parasound P/LD 1500 hissing sound in left channel
  133. another studiomaster story
  134. Transformer with 3 secondaries
  135. Need sub woofer controller
  136. Subwoofer controller
  137. APT audio products
  138. how to hook up my preamp for recording??
  139. Class A preamp: please critique my circuit and give me helpful suggestions.
  140. Mixing slope types?
  141. Measuring Line Level Output?
  142. Buss Channel with Noise after wrong soldered bypass Cap.
  143. Volume pot for line level stereo
  144. Studiomaster 16-4
  145. Opinions: Class A Zen Preamplifier eBay Kit
  146. OpAmp based Summing circuit -- Is greater than Unity Gain here a technical problem?
  147. HELP differntial audio
  148. Part needed: Counterpoint SA-1000 tape/source toggle
  149. dc coupled aikido output?
  150. Ipod Stereo to mono summing
  151. DIY preamp component choice
  152. Velleman K8084 Earthing / Grounding
  153. Active Tone Control and preamp. Need help urgent!
  154. Repairing my balanced inputs
  155. Help with preamp build
  156. Tape out of passive preamp into passive preamp/remove resistors?
  157. SE-ONE Spatial Enhancer
  158. Potmeter to balanced amp= Hum; Help!
  159. LEDs as references in current sources
  160. Looking for inkel pp 821 pre amp service manual
  161. Original Mezmerize thread?
  162. Active xover help.
  163. The Effects Of High Resistance Interconnects
  164. dual balanced ne5534 schematic
  165. JA Pre and MyRef - FE Integration
  166. RFI filter and DC blocking cap
  167. Dyanmic mic to electret type input
  168. Help with audio test equipment design
  169. Simple precision constant current LDR controller
  170. How to control 10 pots in active cross?
  171. HF to LF shelving filter
  172. Lawo W990VS/9 - Connection Question
  173. GlassWare Audio
  174. Source select and passive volume for microcontroller-based preamp?
  175. Microcontroller stepped LDR
  176. Newbie question - PCB mounting
  177. PGA2310 based preamp+ remote
  178. Summing Amp Transformers
  179. Krell KSL AC Conversion 110 -> 240
  180. Insert-send to balanced converter
  181. That 1512 fixed gain follow by a second stage
  182. "Tape Out" on DIY Passive Pre
  183. Help to make a pcb for portable stereo preamp ?
  184. Modifying Maplin preamp kit
  185. Help choosing opamp for this circuit
  186. Help! Microphone impedance matching?
  187. adding opamp filter stage
  188. parametric filter to shelving
  189. opamps - fakes?
  190. combine active xo and parametric eq
  191. Discussion of CCS control for LED/LDR volume adjustment
  192. Small Signal Transistor and Diode Models from NXP
  193. Output Transformer Waveform- Is it good or not?
  194. TL082 Preamp Instability
  195. HELP! line-level crossover design for solar-powered biamped soundsystem
  196. How to integrate Baffle Step Compensation into existing discrete linestage?
  197. Fundamental Oscilliscope Usage
  198. Balanced buffers - analogue volume control
  199. A second order active filter with single supply - Zin ?
  200. Tamradio 600:600 Transformers
  201. Input bias current and impedance of an op amp?
  202. Otari MX7000
  203. Vca's
  204. Optimum value for R(s) in a JFET follower?
  205. Active preamp gain
  206. complementary jfet input trimmer
  207. Looking for a PGA2320 PCB
  208. Looking for discrete high performance linestage design with 12v rails
  209. Which power transformer for low hum?
  210. 2SA1015 SRPP follower bridge mode
  211. H/K 595 subwoofer connect to Aiwa reciever.
  212. Aragon 47k Schematics?
  213. Best OP-amp for EQ circuit?
  214. Broskie
  215. Active Stereo Preamp , OPAMP VS TRANSISTORS , which on would you prefer ?
  216. XLR jacks
  217. Which Aikido?
  218. Electret Mic Power Circuit for PC Input
  219. Soundcraft B100 (TL072...again)
  220. XLR, RCA and CMRR - a few questions
  221. Help Designing Preamp Schematic
  222. Here's a weird enquiry
  223. C1583 & A798
  224. Volume Control with symmetrical out and in
  225. Building a Tee attenuator
  226. Noise in balanced outputs - Parasound
  227. Need some advice on a level booster...
  228. INA134-DRV134 balanced preamp
  229. how to add protection circuits (swith circuit)
  230. resistor(s) in ground paths to reduce hum, etc.
  231. My (quick and dirty) take at a PLLXO for OB, help is welcome
  232. Lundahl LL1530 - audio application?
  233. SP-6 Light with ECC801S
  234. Active crossover help
  235. Line Level Preamp, Using JFETs, in a can.
  236. Replacement push buttons for hafler?
  237. My fuzz pedal project is behaving badly
  238. My fuzz pedal project is behaving badly
  239. Op-amp Upgrade
  240. Output transformers for Line-level signal.
  241. PGA2310 control module
  242. Shields in internally balanced equipment
  243. First effort: MM/MC phono preamp with DC servo
  244. How to figure gyrator treble boost gain
  245. AirTight ATC-2 Preamp Pictures
  246. Need help with the NE5543N opamp
  247. help building a crossover/lowpass filter
  248. Poles and throws?
  249. DC buildup in Linkwitz Transform
  250. BOZ (bride of Zen) advices asked - things to do/avoid

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