View Full Version : Analog Line Level

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  1. Stupid Q ... what determines "signal ground" on a unity gain buffer?
  2. carver C-2 pre hum?
  3. LME49720 preamp for F5
  4. Audio Research LS-1 Schematic & Parts List?
  5. Help for MUSES 72320 DIY kit
  6. Middle Controls
  7. Dual Regulated Bugle Phono Preamp?
  8. How to run line level output to ground
  9. SSM2019BNZ for 'gainy' pre-amp?
  10. DBX Active Crossover
  11. Luxman C1000 preamp starts clicking on and off rapidly after 20 min
  12. Stereo + LFE (2.1)?
  13. Cat5 Audio Line Noise
  14. STP analog audio interconnect ex-Firewire
  15. Octal ccda inclosure build (lots of pics!)
  16. Question about speaker protection kit circuit
  17. Simple Question about Speaker Protection
  18. low pass filter
  19. Checking needed: 2way active crossover
  20. Cermet or conductive plastic
  21. any one have schematic of this cross over?
  22. Forte F-44
  23. multiple devices feeding a single line input
  24. op amp selection?
  25. Sound-card info needed?
  26. Reducing effects of floor vibrations
  27. Preamp kit recommendations
  28. Signal LED causing distortion
  29. Should I be worried about gain structure?
  30. Soundcard input protection circuit
  31. Balanced line receiver (INA134) - RFI caps - compromise between CMRR/RFI filtering
  32. simple questions: integrating pre and power amp
  33. Need help with subwoofer integration with ZAPH AUDIO SR71
  34. ss chinese preamplifiers?
  35. Help with Passive Summing Theory
  36. Exploring possibilities new downward expander design
  37. mark levinson jc2 defect
  38. PreAmp Voltage/Impedance
  39. LOC Vs. Amps High Level Inputs
  40. Preamp design, include gain bypass?
  41. Thoughts on this input selector PCB? How can I add volume control?
  42. Pot imbalance
  43. Power Supply Upgrade - Request Sanity Check
  44. ADC0804 Relay Attenuator
  45. Experience with edcor xsm2.4k-600 as preamp/dac output ?
  46. Baxandall tone topologies
  47. Volume (level) ... the bottom line
  48. Marchand XM-1 mystery parts
  49. Simaudio CP-8 Owners: Did you know that it was a Denon?
  50. Supply voltage vs performance
  51. 10 band equalizer based on LM833
  52. What kind of filter is this
  53. PS III Linear Control Center
  54. How loud?
  55. comparison idea concerning the villex passive booster jack
  56. Finally! the high gain I needed...
  57. John Curl's Blowtorch preamplifier part III
  58. SAE P101 cap replacement-help wanted
  59. Tracing Hum in Passive Line Level Filter
  60. Troubleshooting a preamp - sources of buzz/humm/hiss
  61. High Dc offset voltage on the input line
  62. Potentiometer selection for my diy project
  63. Pre-amp to power amp problem
  64. Op-amp for Single-Rail Supply
  65. what is the best route for a 2.5 system?
  66. Counterpoint SA-3 rebuild
  67. ground "loop" type issue with Android phones into class D amps
  68. Single ended to balanced conversion
  69. Leveling line signals to power amp
  70. OPA2134 Tilt Equalizer
  71. Removing a Crossover from a poweramp
  72. ls404 based active crossover try
  73. Equalizer
  74. Bose 901 Series IV ActiVe EQ schematic
  75. help with diy phono preamp
  76. PGA2310 preamplifier
  77. Opamp Line Attenuator and Buffer Question
  78. Tube Preamp with HT Bypass...
  79. 4 chanel Stereo Input Selector
  80. Bose 901 series I active equalizer DIY
  81. 110db SNR discrete buffered preamplifier with Vclip indicator
  82. 512-MPSA92 Replacement in MOX
  83. Help with "IPOD" in car audio application
  84. Transistor Preamplifier -part values for higher voltage rail.
  85. P37 pre from Elliot --lowering gain
  86. How to buffer the analog out put of a DAC chip
  87. 7.1 Switcher
  88. How to check circuit for oscillation?
  89. How to "Sum" L+R signals for a mono sub output?
  90. need btl schematic using op-amp
  91. 600:10k line stage transformers any use?
  92. JC-2 Clone Build
  93. Carver C1 preamp loud static "pop"
  94. Understanding and optimizing Ashly xover help?
  95. Current Feedback Opamps in simulation and practice.
  96. fluorescent peak meter
  97. DIY Preamp recommendations
  98. Active Crossover Design: How the drivers influence filter type/topology/slope?
  99. Sumo Athena II balanced?
  100. help me, please find a service manual for dbx386 for repair
  101. PGA2310 impedance questions
  102. Remote control kaput?
  103. Pre amplifier or not?
  104. line level strength - big boost required
  105. input selector, to use resistors at the inputs or not
  106. AH Pre line stage
  107. internal cable recommendation
  108. want to make a splitter box for use with mixer inserts
  109. Modding Ecler AC-6 talkover release
  110. ADC Sound Shaper 3 EQ
  111. Schematic wanted for parametric Equalizers from Behringer and IBANEZ
  112. What else? A PGA-preamplifier...
  113. Modding My ADC SS100-SL Equalizer
  114. Preamp Gain for NE5532
  115. Gain regulation on Counterpoint SA3000
  116. Any analog xovers as good as Ashly XR series?
  117. THAT 5171 Controlled By Arduino?
  118. Ground Loop in UREI 1176 compressor
  119. Handling inactive inputs in source selector
  120. How to split output from phono stage
  121. low pass and subsonic filter
  122. BEQ circuit
  123. Adding in RCA Outputs
  124. Wanted: 80Hz Linkwitz-Riley 24hz/octive low-pass filter
  125. Jumper wires & RFI in preamp
  126. Help with component selection for filter
  127. INKEL MX991
  128. Active Crossover Adjustment
  129. CS3318 based preamp - layout
  130. EAD Theatermaster Classic won't operate
  131. filter Q Question
  132. Buffering two signals together
  133. How to bias 2SK170BL in Boozehound Labs phono pre?
  134. Can I make a really simplistic line-level signal go mono one way, stereo in parallel?
  135. Aikido - approximate input impedance
  136. Ultimate analogue tone control or an audiophool overkill? :)
  137. A remote control preamp in the works
  138. Custom Equalizer Design needed
  139. Multichannel preamp
  140. Hafler Iris Preamp balance issue - fixed
  141. Acurus L10 Preamp Mods & Schematic
  142. Home made DSP / FPGA digital audio mixer
  143. Soundcraft LX7 Replacement parts
  144. Bonsai's practical buffer
  145. Help needed with an audio signal splitter solution
  146. Crosstalk?
  147. i want to throw something
  148. Optimizing resistor placement Vishay TX2575
  149. Input impedance of PRE vs sensitivity to disturbance
  150. PIC Controlled PGA 2320 8 Channel Preamp
  151. How to change a degree of volume pot rotation by remote control?
  152. tamura input transformer shield
  153. Need a help: Mark Levinson No26.
  154. LME49720 Pre amp PCB/Kit
  155. Faulty mixer inputs
  156. Basic home cinema wiring advice
  157. Diamond Cascode, a Diamond-like buffer/current booster
  158. Unusual high-pitched whistle caused by my Audio Pre-AMP
  159. Looking to build stereo mixer but can't find many schematics!
  160. Aureus preAmplifier
  161. strange! LM-4562 question
  162. Tube Preamp hummmmmm
  163. LCDuino-1 Processor, using non-latching relays help
  164. CS3318 PCB Layout
  165. Levels in an active three-way system
  166. Source selector using Analog switches or multiplexers - opinions?
  167. Yet another PGA23xx board...
  168. Concentric shaft Alps "Blue" pot
  169. Cleaning dusty printed circuit boards
  170. ad797 plus buf634
  171. Bypass - ceramic or film?
  172. tweeter crossover
  173. This pre-amp good?
  174. Remote Control Pot
  175. VU Meter ballistics
  176. The "AmpDuino" project
  177. Capacitors at 50v vs 25v on replacement in preamp power supply?
  178. Knocking sound coming from PCB
  179. Versatile quad-amp card
  180. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  181. Just built a Hagerman Cornet 2 phono pre
  182. ad797 questions
  183. [Newbie]Audio bandpass filter design
  184. Wideband DCA preamp with shunt PS
  185. 3-way input selector + Attenuator + Balanced outputs?
  186. subwoofer circuit
  187. Motorised Volume Pot - Controller isolation
  188. Audio compressor to lower TV commercials-help needed
  189. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  190. 2ch passive stereo summing circuit?
  191. designing a 1-Hz lowpass with no DC error
  192. What is a preamp actually doing?
  193. Choosing attenuator for MF X-10D Clone
  194. some questions about DC servo mic pre's
  195. Need hekp with how to select a preamp
  196. Weird problem with a preamp with 3 band EQ module
  197. TEAC VU Meter Hookup
  198. input transformer frequency response?
  199. Help wanted checking vero layout for active 4 channel mixer
  200. Simple non-digital input selector
  201. dc on only one primary of the line trafo
  202. Volume potmeter Technics Su 8600
  203. Servo on non-inverting opamp ?
  204. Any suggestions to improve these output and input filters?
  205. simple solution for VU-Meter
  206. Combined Speaker-Amplifier Project
  207. Teac AN-60 Alignment
  208. 2.5v achieves lower distortion on LDR NSL32SR2
  209. Help Gain clone supply PCB design
  210. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  211. 3-way signal splitter
  212. implimenting linkwitz's notch/dip filter for room eq
  213. Anyone seen this EQ before?
  214. ReCapping marantz av-9000 16v 13000uf
  215. Audio Processing
  216. Anyone know what these caps are for?
  217. Is coax needed to wire a microphone?
  218. How do I choose a preamplifier that would be compatible with this microphone?
  219. W06M Bridge Rectifier, equivalent substitute
  220. Preamplifier kit information
  221. Handling +4dBu/-10dBv and un/balanced
  222. Line receiver and driver pcb?
  223. 2 conductor shielded cable
  225. 20hz high pass on Ashly XR2000 - removable?
  226. Transformer Based Balanced Output & Impedance
  227. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  228. John Bowers Active Control Unit preamp: Info sought
  229. Looking for pointers on first DIY preamp please.
  230. Simple analog vu-meter driver ?
  231. Please pardon the noob question. need guidance
  232. Build a high pass filter for amplifier
  233. Critique on success of this subwoofer cutoff project?
  234. Need gain AMOUNT for mobile phone/pc sources
  235. re-replacing 2sk213/j76 transistors help
  236. Preventing crossover between mixers
  237. RCA LMI- 32215 A - for recording studio.
  238. Rane pot help please...
  239. Simple low voltage tube preamp stage
  240. HELP me design a discrete current sinking positive V regulator
  241. True Biamping and Active crossovers info request
  242. Question about hypex balanced vs unbalanced
  243. Soundcraftsmen
  244. very small noob question project 88
  245. Help with cable conundrum!
  246. P7 Pre amp Trouble
  247. Party-line / Full-duplex intercom - mixing audio signals
  248. ZSP1 preamp gain
  249. Acurus L10 Powersupply
  250. Building an Analog to Digital Converter Unit...

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