View Full Version : Analog Line Level

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  1. Forte F-44
  2. multiple devices feeding a single line input
  3. op amp selection?
  4. Sound-card info needed?
  5. Reducing effects of floor vibrations
  6. Preamp kit recommendations
  7. Signal LED causing distortion
  8. Should I be worried about gain structure?
  9. Soundcard input protection circuit
  10. Balanced line receiver (INA134) - RFI caps - compromise between CMRR/RFI filtering
  11. simple questions: integrating pre and power amp
  12. Need help with subwoofer integration with ZAPH AUDIO SR71
  13. ss chinese preamplifiers?
  14. Help with Passive Summing Theory
  15. Exploring possibilities new downward expander design
  16. mark levinson jc2 defect
  17. PreAmp Voltage/Impedance
  18. LOC Vs. Amps High Level Inputs
  19. Preamp design, include gain bypass?
  20. Thoughts on this input selector PCB? How can I add volume control?
  21. Pot imbalance
  22. Power Supply Upgrade - Request Sanity Check
  23. ADC0804 Relay Attenuator
  24. Experience with edcor xsm2.4k-600 as preamp/dac output ?
  25. Baxandall tone topologies
  26. Volume (level) ... the bottom line
  27. Marchand XM-1 mystery parts
  28. Simaudio CP-8 Owners: Did you know that it was a Denon?
  29. Supply voltage vs performance
  30. 10 band equalizer based on LM833
  31. What kind of filter is this
  32. PS III Linear Control Center
  33. How loud?
  34. comparison idea concerning the villex passive booster jack
  35. Finally! the high gain I needed...
  36. John Curl's Blowtorch preamplifier part III
  37. SAE P101 cap replacement-help wanted
  38. Tracing Hum in Passive Line Level Filter
  39. Troubleshooting a preamp - sources of buzz/humm/hiss
  40. High Dc offset voltage on the input line
  41. Potentiometer selection for my diy project
  42. Pre-amp to power amp problem
  43. Op-amp for Single-Rail Supply
  44. what is the best route for a 2.5 system?
  45. Counterpoint SA-3 rebuild
  46. ground "loop" type issue with Android phones into class D amps
  47. Single ended to balanced conversion
  48. Leveling line signals to power amp
  49. OPA2134 Tilt Equalizer
  50. Removing a Crossover from a poweramp
  51. ls404 based active crossover try
  52. Equalizer
  53. Bose 901 Series IV ActiVe EQ schematic
  54. help with diy phono preamp
  55. PGA2310 preamplifier
  56. Opamp Line Attenuator and Buffer Question
  57. Tube Preamp with HT Bypass...
  58. 4 chanel Stereo Input Selector
  59. Bose 901 series I active equalizer DIY
  60. 110db SNR discrete buffered preamplifier with Vclip indicator
  61. 512-MPSA92 Replacement in MOX
  62. Help with "IPOD" in car audio application
  63. Transistor Preamplifier -part values for higher voltage rail.
  64. P37 pre from Elliot --lowering gain
  65. How to buffer the analog out put of a DAC chip
  66. 7.1 Switcher
  67. How to check circuit for oscillation?
  68. How to "Sum" L+R signals for a mono sub output?
  69. need btl schematic using op-amp
  70. 600:10k line stage transformers any use?
  71. JC-2 Clone Build
  72. Carver C1 preamp loud static "pop"
  73. Understanding and optimizing Ashly xover help?
  74. Current Feedback Opamps in simulation and practice.
  75. fluorescent peak meter
  76. DIY Preamp recommendations
  77. Active Crossover Design: How the drivers influence filter type/topology/slope?
  78. Sumo Athena II balanced?
  79. help me, please find a service manual for dbx386 for repair
  80. PGA2310 impedance questions
  81. Remote control kaput?
  82. Pre amplifier or not?
  83. line level strength - big boost required
  84. input selector, to use resistors at the inputs or not
  85. AH Pre line stage
  86. internal cable recommendation
  87. want to make a splitter box for use with mixer inserts
  88. Modding Ecler AC-6 talkover release
  89. ADC Sound Shaper 3 EQ
  90. Schematic wanted for parametric Equalizers from Behringer and IBANEZ
  91. What else? A PGA-preamplifier...
  92. Modding My ADC SS100-SL Equalizer
  93. Preamp Gain for NE5532
  94. Gain regulation on Counterpoint SA3000
  95. Any analog xovers as good as Ashly XR series?
  96. THAT 5171 Controlled By Arduino?
  97. Ground Loop in UREI 1176 compressor
  98. Handling inactive inputs in source selector
  99. How to split output from phono stage
  100. low pass and subsonic filter
  101. BEQ circuit
  102. Adding in RCA Outputs
  103. Wanted: 80Hz Linkwitz-Riley 24hz/octive low-pass filter
  104. Jumper wires & RFI in preamp
  105. Help with component selection for filter
  106. INKEL MX991
  107. Active Crossover Adjustment
  108. CS3318 based preamp - layout
  109. EAD Theatermaster Classic won't operate
  110. filter Q Question
  111. Buffering two signals together
  112. How to bias 2SK170BL in Boozehound Labs phono pre?
  113. Can I make a really simplistic line-level signal go mono one way, stereo in parallel?
  114. Aikido - approximate input impedance
  115. Ultimate analogue tone control or an audiophool overkill? :)
  116. A remote control preamp in the works
  117. Custom Equalizer Design needed
  118. Multichannel preamp
  119. Hafler Iris Preamp balance issue - fixed
  120. Acurus L10 Preamp Mods & Schematic
  121. Home made DSP / FPGA digital audio mixer
  122. Soundcraft LX7 Replacement parts
  123. Bonsai's practical buffer
  124. Help needed with an audio signal splitter solution
  125. Crosstalk?
  126. i want to throw something
  127. Optimizing resistor placement Vishay TX2575
  128. Input impedance of PRE vs sensitivity to disturbance
  129. PIC Controlled PGA 2320 8 Channel Preamp
  130. How to change a degree of volume pot rotation by remote control?
  131. tamura input transformer shield
  132. Need a help: Mark Levinson No26.
  133. LME49720 Pre amp PCB/Kit
  134. Faulty mixer inputs
  135. Basic home cinema wiring advice
  136. Diamond Cascode, a Diamond-like buffer/current booster
  137. Unusual high-pitched whistle caused by my Audio Pre-AMP
  138. Looking to build stereo mixer but can't find many schematics!
  139. Aureus preAmplifier
  140. strange! LM-4562 question
  141. Tube Preamp hummmmmm
  142. LCDuino-1 Processor, using non-latching relays help
  143. CS3318 PCB Layout
  144. Levels in an active three-way system
  145. Source selector using Analog switches or multiplexers - opinions?
  146. Yet another PGA23xx board...
  147. Concentric shaft Alps "Blue" pot
  148. Cleaning dusty printed circuit boards
  149. ad797 plus buf634
  150. Bypass - ceramic or film?
  151. tweeter crossover
  152. This pre-amp good?
  153. Remote Control Pot
  154. VU Meter ballistics
  155. The "AmpDuino" project
  156. Capacitors at 50v vs 25v on replacement in preamp power supply?
  157. Knocking sound coming from PCB
  158. Versatile quad-amp card
  159. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  160. Just built a Hagerman Cornet 2 phono pre
  161. ad797 questions
  162. [Newbie]Audio bandpass filter design
  163. Wideband DCA preamp with shunt PS
  164. 3-way input selector + Attenuator + Balanced outputs?
  165. subwoofer circuit
  166. Motorised Volume Pot - Controller isolation
  167. Audio compressor to lower TV commercials-help needed
  168. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  169. 2ch passive stereo summing circuit?
  170. designing a 1-Hz lowpass with no DC error
  171. What is a preamp actually doing?
  172. Choosing attenuator for MF X-10D Clone
  173. some questions about DC servo mic pre's
  174. Need hekp with how to select a preamp
  175. Weird problem with a preamp with 3 band EQ module
  176. TEAC VU Meter Hookup
  177. input transformer frequency response?
  178. Help wanted checking vero layout for active 4 channel mixer
  179. Simple non-digital input selector
  180. dc on only one primary of the line trafo
  181. Volume potmeter Technics Su 8600
  182. Servo on non-inverting opamp ?
  183. Any suggestions to improve these output and input filters?
  184. simple solution for VU-Meter
  185. Combined Speaker-Amplifier Project
  186. Teac AN-60 Alignment
  187. 2.5v achieves lower distortion on LDR NSL32SR2
  188. Help Gain clone supply PCB design
  189. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  190. 3-way signal splitter
  191. implimenting linkwitz's notch/dip filter for room eq
  192. Anyone seen this EQ before?
  193. ReCapping marantz av-9000 16v 13000uf
  194. Audio Processing
  195. Anyone know what these caps are for?
  196. Is coax needed to wire a microphone?
  197. How do I choose a preamplifier that would be compatible with this microphone?
  198. W06M Bridge Rectifier, equivalent substitute
  199. Preamplifier kit information
  200. Handling +4dBu/-10dBv and un/balanced
  201. Line receiver and driver pcb?
  202. 2 conductor shielded cable
  204. 20hz high pass on Ashly XR2000 - removable?
  205. Transformer Based Balanced Output & Impedance
  206. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  207. John Bowers Active Control Unit preamp: Info sought
  208. Looking for pointers on first DIY preamp please.
  209. Simple analog vu-meter driver ?
  210. Please pardon the noob question. need guidance
  211. Build a high pass filter for amplifier
  212. Critique on success of this subwoofer cutoff project?
  213. Need gain AMOUNT for mobile phone/pc sources
  214. re-replacing 2sk213/j76 transistors help
  215. Preventing crossover between mixers
  216. RCA LMI- 32215 A - for recording studio.
  217. Rane pot help please...
  218. Simple low voltage tube preamp stage
  219. HELP me design a discrete current sinking positive V regulator
  220. True Biamping and Active crossovers info request
  221. Question about hypex balanced vs unbalanced
  222. Soundcraftsmen
  223. very small noob question project 88
  224. Help with cable conundrum!
  225. P7 Pre amp Trouble
  226. Party-line / Full-duplex intercom - mixing audio signals
  227. ZSP1 preamp gain
  228. Acurus L10 Powersupply
  229. Building an Analog to Digital Converter Unit...
  230. DIY pre amp board
  231. Opamp power bypass
  232. Tone Control - Volatage range for TL072/LF252-N
  233. Stereo volume attenuation
  234. Quad channel volume control
  235. Work? L, R RCA inputs -> 1 XLR out?
  236. Impedance matching pre -> power.
  237. LME49740 vs TL074, design considerations and stability
  238. Solid state R2R attenuator using analog switches or multiplying DAC
  239. MF nuvista source selector problem again
  240. What do we think about solid-state potentiometers?
  241. TubeCAD's ACF2 as a active crossover
  242. Phaseca--My new diy pre amp
  243. looking for bass treble pcb pattern
  244. Mobile recording using linein
  245. [Need] simple preamp and LPF based on 5532 for digital sources
  246. wall-based trasformer volume control as passive pre?
  247. noob stab in the dark - riaa preamp
  248. Oscillating Op-Amp
  249. Preamp for shotgun mic
  250. Mark Levinson No 38, Need Help

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