View Full Version : Analog Line Level

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  1. Help needed with a transamp mic preamp circuit.
  2. Kleos 2 Way JFET Crossover with EQ
  3. see this preamp circuit diagram
  4. pre-amp tune up
  5. Preamplifier with aux and mic inputs
  6. Schematic wanted for portable SONY Monaural Receiver ICF-6000L
  7. Need a high quality SS mic preamp kit
  8. Marantz 2270 Preamp
  9. Source selector without mechanical switch
  10. Imaging skewed to the left
  11. THD calc from spectrum analyzer help
  12. A question regarding "loudness"
  13. Did I put these back in the correct spots?
  14. Lookin for nice simple XLR out preamp?
  15. Boz preamp and PLLXO
  16. Sound City studios/Neve etc Documentary
  17. Adding a tube preamp to a solid state combo amp
  18. BAT VK-32SE
  19. The Heavy Cross - ideas about a transconductance phase-splitting amp
  20. Tip on high amplification, low distortion, single-ended, no feedback circuitry?
  21. PC900 tube as a preamp...pictures
  22. Input transformer for summing amp
  23. Stereo to mono summing, which end to sum?
  24. Bass distortion when using digital pot
  25. need help with mute circuit for preamp
  26. JC2 v1.6 preamplifier build
  27. 3-pin balanced XLR - gender conventions
  28. help getting to 47kohm impedance
  29. Volume Control and Sound Quality
  30. Solid State Phono Stage
  31. Balanced ladder attenuator, make before brake question
  32. Standard spacing for XLR connectors
  33. Basic Pre-Amp Kit
  34. Single to differential into amp - transformer or dual opamp
  35. JFET follower Baffle Step Possible? Bass Boost?
  36. Op amps for active Xover and line drivers
  37. crossover buffer question
  38. Balanced LDR attenuator
  39. I'd like to add an Analog In and Out Section to an Elite 62FD Player
  40. Advice needed: mixed order Linkwitz Riley crossover
  41. Best-Sounding RC Attenuator & Source Selection System
  42. Ultra Low Noise - Ultra Low Impedance - Ultra big Problems!
  43. Anyone Ever Heard of a Soho Quatro Preamp?
  44. Help please: need wiring schema for S&B TX-102 TVC
  45. mp3 --> ? Input Transformer ? --> class d
  46. Aikido Octal All in One transformer help
  47. Designing a noob-preamp (single supply)
  48. RIAA Pacific rookie attempt
  49. This may be a silly question...
  50. 1st pre amp build, 1/2 way anyways
  51. Stereo to mono
  52. Tone control schematic with surround sound (?)
  53. Linkwitz Transform Arrangement to optimize subwoofer response
  54. Need help....................
  55. to switch or not?
  56. line transformer matching impedance Icepower 50ASX2
  57. Hot Rodding the Musical Fidelity X-Pre
  58. Any experience with Elliott Sound VCA Pre-Amp
  59. Humm noise on pre McIntosh MX136
  60. Stupid Q ... what determines "signal ground" on a unity gain buffer?
  61. carver C-2 pre hum?
  62. LME49720 preamp for F5
  63. Audio Research LS-1 Schematic & Parts List?
  64. Help for MUSES 72320 DIY kit
  65. Middle Controls
  66. Dual Regulated Bugle Phono Preamp?
  67. How to run line level output to ground
  68. SSM2019BNZ for 'gainy' pre-amp?
  69. DBX Active Crossover
  70. Luxman C1000 preamp starts clicking on and off rapidly after 20 min
  71. Stereo + LFE (2.1)?
  72. Cat5 Audio Line Noise
  73. STP analog audio interconnect ex-Firewire
  74. Octal ccda inclosure build (lots of pics!)
  75. Question about speaker protection kit circuit
  76. Simple Question about Speaker Protection
  77. low pass filter
  78. Checking needed: 2way active crossover
  79. Cermet or conductive plastic
  80. any one have schematic of this cross over?
  81. Forte F-44
  82. multiple devices feeding a single line input
  83. op amp selection?
  84. Sound-card info needed?
  85. Reducing effects of floor vibrations
  86. Preamp kit recommendations
  87. Signal LED causing distortion
  88. Should I be worried about gain structure?
  89. Soundcard input protection circuit
  90. Balanced line receiver (INA134) - RFI caps - compromise between CMRR/RFI filtering
  91. simple questions: integrating pre and power amp
  92. Need help with subwoofer integration with ZAPH AUDIO SR71
  93. ss chinese preamplifiers?
  94. Help with Passive Summing Theory
  95. Exploring possibilities new downward expander design
  96. mark levinson jc2 defect
  97. PreAmp Voltage/Impedance
  98. LOC Vs. Amps High Level Inputs
  99. Preamp design, include gain bypass?
  100. Thoughts on this input selector PCB? How can I add volume control?
  101. Pot imbalance
  102. Power Supply Upgrade - Request Sanity Check
  103. ADC0804 Relay Attenuator
  104. Experience with edcor xsm2.4k-600 as preamp/dac output ?
  105. Baxandall tone topologies
  106. Volume (level) ... the bottom line
  107. Marchand XM-1 mystery parts
  108. Simaudio CP-8 Owners: Did you know that it was a Denon?
  109. Supply voltage vs performance
  110. 10 band equalizer based on LM833
  111. What kind of filter is this
  112. PS III Linear Control Center
  113. How loud?
  114. comparison idea concerning the villex passive booster jack
  115. Finally! the high gain I needed...
  116. John Curl's Blowtorch preamplifier part III
  117. SAE P101 cap replacement-help wanted
  118. Tracing Hum in Passive Line Level Filter
  119. Troubleshooting a preamp - sources of buzz/humm/hiss
  120. High Dc offset voltage on the input line
  121. Potentiometer selection for my diy project
  122. Pre-amp to power amp problem
  123. Op-amp for Single-Rail Supply
  124. what is the best route for a 2.5 system?
  125. Counterpoint SA-3 rebuild
  126. ground "loop" type issue with Android phones into class D amps
  127. Single ended to balanced conversion
  128. Leveling line signals to power amp
  129. OPA2134 Tilt Equalizer
  130. Removing a Crossover from a poweramp
  131. ls404 based active crossover try
  132. Equalizer
  133. Bose 901 Series IV ActiVe EQ schematic
  134. help with diy phono preamp
  135. PGA2310 preamplifier
  136. Opamp Line Attenuator and Buffer Question
  137. Tube Preamp with HT Bypass...
  138. 4 chanel Stereo Input Selector
  139. Bose 901 series I active equalizer DIY
  140. 110db SNR discrete buffered preamplifier with Vclip indicator
  141. 512-MPSA92 Replacement in MOX
  142. Help with "IPOD" in car audio application
  143. Transistor Preamplifier -part values for higher voltage rail.
  144. P37 pre from Elliot --lowering gain
  145. How to buffer the analog out put of a DAC chip
  146. 7.1 Switcher
  147. How to check circuit for oscillation?
  148. How to "Sum" L+R signals for a mono sub output?
  149. need btl schematic using op-amp
  150. 600:10k line stage transformers any use?
  151. JC-2 Clone Build
  152. Carver C1 preamp loud static "pop"
  153. Understanding and optimizing Ashly xover help?
  154. Current Feedback Opamps in simulation and practice.
  155. fluorescent peak meter
  156. DIY Preamp recommendations
  157. Active Crossover Design: How the drivers influence filter type/topology/slope?
  158. Sumo Athena II balanced?
  159. help me, please find a service manual for dbx386 for repair
  160. PGA2310 impedance questions
  161. Remote control kaput?
  162. Pre amplifier or not?
  163. line level strength - big boost required
  164. input selector, to use resistors at the inputs or not
  165. AH Pre line stage
  166. internal cable recommendation
  167. want to make a splitter box for use with mixer inserts
  168. Modding Ecler AC-6 talkover release
  169. ADC Sound Shaper 3 EQ
  170. Schematic wanted for parametric Equalizers from Behringer and IBANEZ
  171. What else? A PGA-preamplifier...
  172. Modding My ADC SS100-SL Equalizer
  173. Preamp Gain for NE5532
  174. Gain regulation on Counterpoint SA3000
  175. Any analog xovers as good as Ashly XR series?
  176. THAT 5171 Controlled By Arduino?
  177. Ground Loop in UREI 1176 compressor
  178. Handling inactive inputs in source selector
  179. How to split output from phono stage
  180. low pass and subsonic filter
  181. BEQ circuit
  182. Adding in RCA Outputs
  183. Wanted: 80Hz Linkwitz-Riley 24hz/octive low-pass filter
  184. Jumper wires & RFI in preamp
  185. Help with component selection for filter
  186. INKEL MX991
  187. Active Crossover Adjustment
  188. CS3318 based preamp - layout
  189. EAD Theatermaster Classic won't operate
  190. filter Q Question
  191. Buffering two signals together
  192. How to bias 2SK170BL in Boozehound Labs phono pre?
  193. Can I make a really simplistic line-level signal go mono one way, stereo in parallel?
  194. Aikido - approximate input impedance
  195. Ultimate analogue tone control or an audiophool overkill? :)
  196. A remote control preamp in the works
  197. Custom Equalizer Design needed
  198. Multichannel preamp
  199. Hafler Iris Preamp balance issue - fixed
  200. Acurus L10 Preamp Mods & Schematic
  201. Home made DSP / FPGA digital audio mixer
  202. Soundcraft LX7 Replacement parts
  203. Bonsai's practical buffer
  204. Help needed with an audio signal splitter solution
  205. Crosstalk?
  206. i want to throw something
  207. Optimizing resistor placement Vishay TX2575
  208. Input impedance of PRE vs sensitivity to disturbance
  209. PIC Controlled PGA 2320 8 Channel Preamp
  210. How to change a degree of volume pot rotation by remote control?
  211. tamura input transformer shield
  212. Need a help: Mark Levinson No26.
  213. LME49720 Pre amp PCB/Kit
  214. Faulty mixer inputs
  215. Basic home cinema wiring advice
  216. Diamond Cascode, a Diamond-like buffer/current booster
  217. Unusual high-pitched whistle caused by my Audio Pre-AMP
  218. Looking to build stereo mixer but can't find many schematics!
  219. Aureus preAmplifier
  220. strange! LM-4562 question
  221. Tube Preamp hummmmmm
  222. LCDuino-1 Processor, using non-latching relays help
  223. CS3318 PCB Layout
  224. Levels in an active three-way system
  225. Source selector using Analog switches or multiplexers - opinions?
  226. Yet another PGA23xx board...
  227. Concentric shaft Alps "Blue" pot
  228. Cleaning dusty printed circuit boards
  229. ad797 plus buf634
  230. Bypass - ceramic or film?
  231. tweeter crossover
  232. This pre-amp good?
  233. Remote Control Pot
  234. VU Meter ballistics
  235. The "AmpDuino" project
  236. Capacitors at 50v vs 25v on replacement in preamp power supply?
  237. Knocking sound coming from PCB
  238. Versatile quad-amp card
  239. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  240. Just built a Hagerman Cornet 2 phono pre
  241. ad797 questions
  242. [Newbie]Audio bandpass filter design
  243. Wideband DCA preamp with shunt PS
  244. 3-way input selector + Attenuator + Balanced outputs?
  245. subwoofer circuit
  246. Motorised Volume Pot - Controller isolation
  247. Audio compressor to lower TV commercials-help needed
  248. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  249. 2ch passive stereo summing circuit?
  250. designing a 1-Hz lowpass with no DC error

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