View Full Version : Analog Line Level

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  1. Layman's question for the pros
  2. Active volume control with balanced output using 2 op-amps
  3. Great American Sound Thalia 1 Service Info
  4. Too much signal voltage...
  5. Impedance matching - Source / Attenuator / Amp
  6. DIY Sine Wave Oscillator Trouble
  7. What is the maximum gain for 1 op amp stage?
  8. What is the consequence of this wiring scheme? (With tangential "extra trace"?)
  9. preamp relay driver needed
  10. Buffer output for PCM1794A
  11. Lemonstre at linelevel
  12. Large band para eq - optimisations and smd pcb ?
  13. Passive line level crossover, different impedance amps
  14. TI Active volume control board...tipd136
  15. carlos Jfet pre voltage questions
  16. Looking for basic source mixer for home system
  17. Help needed for calaculate cutoff frequency ?
  18. Critique this noninverting opamp buffer/amplifier please? Almost time to build...
  19. the "JB" 3-stage Phono Preamp
  20. Preamp does not mute.
  21. 9 Pin1/4" inputjack for Soho tube Preamp
  22. Great American Sound Thaila 2 Setup Procedure
  23. Need a simple pre-amp, quick!
  24. Adding a (variable) gain boost to this non-inverting opamp buffer circuit?
  25. Klotz IC cables - opinions on specific types
  26. Matching I/O Impedance - How to?
  27. Equalizer and tone control circuit used in Dj mixer
  28. High performance subwoofer filter circuit(low pass) to your audio amp
  29. Unity gain opamp circuit
  30. Looking for a Cheap, simple Opamp gain stage
  31. Phantom Powered Stereo DI
  32. Why so difficult; It's just a switch
  33. Buzzing passive pre-amp
  34. do i need a preamp for a passive mixer?
  35. Wire gauge for amplifier's signal level input.
  36. CD Line out - PC sound
  37. Phono pre with Jfet and then ad815 at the second stage..
  38. Replacement for Monacor's RCA Connector T-724G wanted
  39. synare clone kit
  40. Full-Analog Arduino(or embedded)-CTRL 2wayCrossover
  41. Line Level Transformer Impedance
  42. Need help with schematics
  43. Luminous Axiom Passive Pre with 2 Outputs - Dumb Question
  44. how to remote control a rotary switch
  45. NE5532 preamp questions
  46. Using O2 as preamp
  47. 0.005% Distortion Tone Control Preamp, NJW1119A Chipset
  48. Low pass filter for subwoofer.
  49. Getting 10-15 dB gain from an opamp buffer circuit?
  50. Simple Volume Knob&Limiter?
  51. Phono card as standalone unit
  52. Passive Preamp schematic for multiple inputs and 2 outputs - help?
  53. 3-way input audio input switching board (ebay)
  54. mixer line in gain control
  55. Single ended Baxandall control - offset on pots
  56. HK825 replace Balance Pot
  57. Simple attenuation needed
  58. Looking for circuit improvement advice(Precision Fidelity C8)
  59. pre-amp with 2 stages adjustable gain
  60. portable discrete mic preamp
  61. Preventing source selector 'thump' using transformer?
  62. Bass loss after static shock - HELP
  63. First post
  64. R-2R attenuator PCB layout question
  65. Using 2SK170/J74BL in Ebay JC-2 "Clone"
  66. Is this signal path correct?
  67. Op amp band pass filter connection problems
  68. lpf calculator
  69. impedance matching question
  70. Custom 6H30 linestage
  71. DIY microphone preamp for Monacor MCE-404U capsule
  72. AD815 or THS6012 pros and cons
  73. What is the impedance out of a voltage divider?
  74. Phono Preamp Question...
  75. Analogue Parametric EQ - Calrec Polar...
  76. Sony pcm 7010 - XLR to RCA input
  77. TDA1524A preamp
  78. Wishlist: Op Amp Characterization Curves in Datasheets
  79. Parametric Mid EQ Pot Wiring
  80. Need PS Audio PS IV schematic
  81. Adding Balanced Outputs Psuedo or Real?
  82. Sending an A/V multi channel pre out into another A/V line in?
  83. Copper purity of Cat-5e cable ?
  84. Balance control?
  85. Input/output transformer question
  86. Equalizing the midrange out of a small Radio Shack driver
  87. what ohmage potentiometer for line out volume control?
  88. preamp signal powered down amp
  89. Passive Balanced Attenuator (between Pre & Power)
  90. Best way to add stereo subwoofer pre-outs to existing DAC/preamp?
  91. iPhone Line Out to Car Amp
  92. Is LR4 phase shift audible
  93. line preamp /buffer /module
  94. Please evaluate this RIAA schematic (njm4580)
  95. Praamp crackling
  96. Buffer Jfet
  97. Onkyo SC-901 crossover rebuild(upgrade)
  98. Art Tube MP Help!
  99. How is the sound of the Radford ZD22 preamp compared to modern high-end preamps ?
  100. from stereo to mono (subwoofer) passive adder ?
  101. Newbie Question: Troubleshooting Simple Line Mixer
  102. About preamp circuits improvements
  103. Noob Question: Electros in signal path
  104. Passive or feedback RIAA network tube phono pre?
  105. THAT1606 based line buffer for balanced guitar - Vero design okay?
  106. Attenuating line level signal with buffer vs. resistor...
  107. New Guy Needs Help With Optimus 31-2025 Graphic Equalizer
  108. Preamp: opamp low pass filter for PS noise
  109. I could use some help on a PS Audio Preamp
  110. another opamp based preamp
  111. Comment on Grounding Scheme?
  112. Radio Shack experimenter kits
  113. Crossover for Scan Speak 6000 tweeter.
  114. Neutrik nte 10/3 help
  115. RCA to XLR
  116. BBE XR-5383 chip
  117. Balanced level preamp
  118. cinemag CMLI-15/15B, unbal--> bal
  119. Pin 1: Multiple XLRs between two amplifiers
  120. Connecting Mp3 player
  121. DIY Tone + Volume control
  122. volume control
  123. Linkwitz-Riley Electronic Crossover PCB
  124. Balanced Microphone Preamp
  125. How Much Voltage Do I Need For a Standard Headphone
  126. Yet another passive volume control
  127. Distortion and Source Impedance in JFET Input Op Amps
  128. Analog switches
  129. Yuan Jing 6n3 tube preamp power requirements and options
  130. PGA2310 frequency response
  131. Smoking Preamplifier
  132. Carver C1 preamp
  133. Meridian 201 help
  134. Active speaker- adding amp/xo
  135. basic power supply questions
  136. McIntosh C26 hum after recaping
  137. Old Volvo Tape Deck Line Level to Tape Head
  138. I Need A New Audio Input Indicator
  139. Handy Non Inverting Active Volume Control
  140. Active volume control - Be quiet please.
  141. Complementary MOS Preamp
  143. Simple Symmetrical Preamplifier
  144. EMT-240, EMT 262
  145. Looking for that person who can analyze and upgrade.
  146. TKD stereo attenuator 10k
  147. Douglas self four-band baxandall eq
  148. Input Noise Cancelation - LME 49990 - LT1028
  149. Baxandall Variations
  150. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  151. Output Transformer for INA217 Mic Preamp?
  152. Advise please on EQ restore...
  153. Recommendations for pre/mixer/thing boards or etc.?
  154. Daisy chain components
  155. Unidirectional Electert Mic and Preamp help.
  156. Rotary stepped attenuator (series) instructions?
  157. High Quality Splitters and Mixers
  158. Which transformations inside this Django?
  159. Balanced stepped attenuator with constant input impedance
  160. 4-ch unbalanced as stereo balanced?
  161. zobel network at driver Fs?
  162. another relay input/volume controller
  163. Basic Inverting Opamp HUM
  164. Recommendations for a simple, opamp-based low-gain stage?
  165. Art Project needs advise, wall of boomboxes
  166. Attenuator design for a modular synth?
  167. Pot values for tone control - from 25k to 10k
  168. Needing Stereo to Mono Summing help...
  169. 2.1 preamp
  170. A little advice, re capping
  171. 8 ohm volume pot
  172. Naim NAC 32.5 Gain board lower gain
  173. P7 Mini Preamp Possible Improvements
  174. Hum issue in hpf circuit
  175. CS3318 Volume Control board with IR?
  176. Balanced line behaviour on Mixer's output
  177. Akitika PR101 Preamp by Dan Joffe
  178. Which one of these wiring schemes will have lower noise?
  179. Need help identifying preamp internals. Conrad Johnson PV-1?
  180. New edition D. Self Small Signal Audio Design
  181. Subwoofer preamplifier with low frequency boost below 30Hz?
  182. Spectrum analyser using LM3915
  183. 9V opamp suggestions
  184. Circlotron LINE and RIAA Pre-Amplifiers wanted
  185. JFET choice for transformer coupled mic preamp
  186. understanding source+return current flow on PCBs
  187. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  188. can use la3161 as a simple solution in a car ?
  189. crossover commission/kit
  190. Switch both sides of input connections?
  191. Hammond 140QEX
  192. Current Amplifyer
  193. An Old Nikko power-supply section question
  194. THAT 202XT VCA + ?
  195. Need analog guru help on grounding
  196. iRig Pre Component Upgrade
  197. Calculating a TVC
  198. Balanced Microphone Preamplifier
  199. Electret Condenser Microphone preamp analysis
  200. LF Line Level Stage design to preceed class D amplifier
  201. Mic Preamp w transformer input: changing impedance
  202. Line level / unity gain vacuum tube circuits
  203. Interpret stereophile measurement data
  204. Diy passive pre and switch
  205. slow audio increase at turn on?
  206. Hammond Amplifier Modification Issue
  207. Would like some help with a "Crossover Isolator"
  208. Correct way to split line level inside dual headphone amp
  209. How can this work?
  210. Balanced input
  211. crossover / summer for "2.1" active or passive
  212. Need Advice for Bi-amping
  213. Too much DC at buffer's output
  214. passive pre-amp ?
  215. Salvaged Phono Preamp - Begginner Help
  216. Tape head amplification circuit
  217. Laptop to Guitar Amp cable. . . Resistor values?
  218. Hifi from german studio modules - help wanted
  219. Guard rings for op amps
  220. Tone control for Low bass selector and boost circuit
  221. "Lehmann" Buffer Output Transistors.
  222. Minuature Low Pass Filter
  223. Easy High-Pass Filter
  224. Analog signal control
  225. Buffer Stage
  226. Critique my first drawing / possible build [Active DI]
  227. Low pass filter for Bitstream DAC.
  228. Looking for 0-10V Analog Volume Control Circuit
  229. AVC
  230. looking for programmable eq chip / pcba module ??
  231. Another Modified PGA2311 kit with Arduino for volume control and input selection
  232. Kudies to/for the Tortuga Audio LDR3X.V2
  233. Parasound P/HP 850
  234. LECUA 1000 attenuator from Luxman ?
  235. Line Level Output to Guitar Amplifier Input
  236. is there an off the shelf preamp module that works with the apple remote?
  237. How about this sub crossover filter?
  238. help with 2 pole low pass filter/attenuator
  239. Zobel at the srpp input
  240. Preamp noise after PSU update
  241. Low level interconnect (RCA) measurements
  242. what are the blocks generally found in a pre-amp board?
  243. Carver ct-3 preamp
  244. Advice on a preamp/external volume control for use with active monitors
  245. Audiophile quality preamp
  246. Building a Line Level Mixer, Transformer advice needed
  247. Sowter type 3232
  248. Super tone controls-I need PCB
  249. L-pad attenuator on preamp output
  250. DI output protection from phantom power

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