View Full Version : Analog Line Level

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  1. Bose 901 Series IV ActiVe EQ schematic
  2. help with diy phono preamp
  3. PGA2310 preamplifier
  4. Opamp Line Attenuator and Buffer Question
  5. Tube Preamp with HT Bypass...
  6. 4 chanel Stereo Input Selector
  7. Bose 901 series I active equalizer DIY
  8. 110db SNR discrete buffered preamplifier with Vclip indicator
  9. 512-MPSA92 Replacement in MOX
  10. Help with "IPOD" in car audio application
  11. Transistor Preamplifier -part values for higher voltage rail.
  12. P37 pre from Elliot --lowering gain
  13. How to buffer the analog out put of a DAC chip
  14. 7.1 Switcher
  15. How to check circuit for oscillation?
  16. How to "Sum" L+R signals for a mono sub output?
  17. need btl schematic using op-amp
  18. 600:10k line stage transformers any use?
  19. JC-2 Clone Build
  20. Carver C1 preamp loud static "pop"
  21. Understanding and optimizing Ashly xover help?
  22. Current Feedback Opamps in simulation and practice.
  23. fluorescent peak meter
  24. DIY Preamp recommendations
  25. Active Crossover Design: How the drivers influence filter type/topology/slope?
  26. Sumo Athena II balanced?
  27. help me, please find a service manual for dbx386 for repair
  28. PGA2310 impedance questions
  29. Remote control kaput?
  30. Pre amplifier or not?
  31. line level strength - big boost required
  32. input selector, to use resistors at the inputs or not
  33. AH Pre line stage
  34. internal cable recommendation
  35. want to make a splitter box for use with mixer inserts
  36. Modding Ecler AC-6 talkover release
  37. ADC Sound Shaper 3 EQ
  38. Schematic wanted for parametric Equalizers from Behringer and IBANEZ
  39. What else? A PGA-preamplifier...
  40. Modding My ADC SS100-SL Equalizer
  41. Preamp Gain for NE5532
  42. Gain regulation on Counterpoint SA3000
  43. Any analog xovers as good as Ashly XR series?
  44. THAT 5171 Controlled By Arduino?
  45. Ground Loop in UREI 1176 compressor
  46. Handling inactive inputs in source selector
  47. How to split output from phono stage
  48. low pass and subsonic filter
  49. BEQ circuit
  50. Adding in RCA Outputs
  51. Wanted: 80Hz Linkwitz-Riley 24hz/octive low-pass filter
  52. Jumper wires & RFI in preamp
  53. Help with component selection for filter
  54. INKEL MX991
  55. Active Crossover Adjustment
  56. CS3318 based preamp - layout
  57. EAD Theatermaster Classic won't operate
  58. filter Q Question
  59. Buffering two signals together
  60. How to bias 2SK170BL in Boozehound Labs phono pre?
  61. Can I make a really simplistic line-level signal go mono one way, stereo in parallel?
  62. Aikido - approximate input impedance
  63. Ultimate analogue tone control or an audiophool overkill? :)
  64. A remote control preamp in the works
  65. Custom Equalizer Design needed
  66. Multichannel preamp
  67. Hafler Iris Preamp balance issue - fixed
  68. Acurus L10 Preamp Mods & Schematic
  69. Home made DSP / FPGA digital audio mixer
  70. Soundcraft LX7 Replacement parts
  71. Bonsai's practical buffer
  72. Help needed with an audio signal splitter solution
  73. Crosstalk?
  74. i want to throw something
  75. Optimizing resistor placement Vishay TX2575
  76. Input impedance of PRE vs sensitivity to disturbance
  77. PIC Controlled PGA 2320 8 Channel Preamp
  78. How to change a degree of volume pot rotation by remote control?
  79. tamura input transformer shield
  80. Need a help: Mark Levinson No26.
  81. LME49720 Pre amp PCB/Kit
  82. Faulty mixer inputs
  83. Basic home cinema wiring advice
  84. Diamond Cascode, a Diamond-like buffer/current booster
  85. Unusual high-pitched whistle caused by my Audio Pre-AMP
  86. Looking to build stereo mixer but can't find many schematics!
  87. Aureus preAmplifier
  88. strange! LM-4562 question
  89. Tube Preamp hummmmmm
  90. LCDuino-1 Processor, using non-latching relays help
  91. CS3318 PCB Layout
  92. Levels in an active three-way system
  93. Source selector using Analog switches or multiplexers - opinions?
  94. Yet another PGA23xx board...
  95. Concentric shaft Alps "Blue" pot
  96. Cleaning dusty printed circuit boards
  97. ad797 plus buf634
  98. Bypass - ceramic or film?
  99. tweeter crossover
  100. This pre-amp good?
  101. Remote Control Pot
  102. VU Meter ballistics
  103. The "AmpDuino" project
  104. Capacitors at 50v vs 25v on replacement in preamp power supply?
  105. Knocking sound coming from PCB
  106. Versatile quad-amp card
  107. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  108. Just built a Hagerman Cornet 2 phono pre
  109. ad797 questions
  110. [Newbie]Audio bandpass filter design
  111. Wideband DCA preamp with shunt PS
  112. 3-way input selector + Attenuator + Balanced outputs?
  113. subwoofer circuit
  114. Motorised Volume Pot - Controller isolation
  115. Audio compressor to lower TV commercials-help needed
  116. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  117. 2ch passive stereo summing circuit?
  118. designing a 1-Hz lowpass with no DC error
  119. What is a preamp actually doing?
  120. Choosing attenuator for MF X-10D Clone
  121. some questions about DC servo mic pre's
  122. Need hekp with how to select a preamp
  123. Weird problem with a preamp with 3 band EQ module
  124. TEAC VU Meter Hookup
  125. input transformer frequency response?
  126. Help wanted checking vero layout for active 4 channel mixer
  127. Simple non-digital input selector
  128. dc on only one primary of the line trafo
  129. Volume potmeter Technics Su 8600
  130. Servo on non-inverting opamp ?
  131. Any suggestions to improve these output and input filters?
  132. simple solution for VU-Meter
  133. Combined Speaker-Amplifier Project
  134. Teac AN-60 Alignment
  135. 2.5v achieves lower distortion on LDR NSL32SR2
  136. Help Gain clone supply PCB design
  137. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  138. 3-way signal splitter
  139. implimenting linkwitz's notch/dip filter for room eq
  140. Anyone seen this EQ before?
  141. ReCapping marantz av-9000 16v 13000uf
  142. Audio Processing
  143. Anyone know what these caps are for?
  144. Is coax needed to wire a microphone?
  145. How do I choose a preamplifier that would be compatible with this microphone?
  146. W06M Bridge Rectifier, equivalent substitute
  147. Preamplifier kit information
  148. Handling +4dBu/-10dBv and un/balanced
  149. Line receiver and driver pcb?
  150. 2 conductor shielded cable
  152. 20hz high pass on Ashly XR2000 - removable?
  153. Transformer Based Balanced Output & Impedance
  154. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  155. John Bowers Active Control Unit preamp: Info sought
  156. Looking for pointers on first DIY preamp please.
  157. Simple analog vu-meter driver ?
  158. Please pardon the noob question. need guidance
  159. Build a high pass filter for amplifier
  160. Critique on success of this subwoofer cutoff project?
  161. Need gain AMOUNT for mobile phone/pc sources
  162. re-replacing 2sk213/j76 transistors help
  163. Preventing crossover between mixers
  164. RCA LMI- 32215 A - for recording studio.
  165. Rane pot help please...
  166. Simple low voltage tube preamp stage
  167. HELP me design a discrete current sinking positive V regulator
  168. True Biamping and Active crossovers info request
  169. Question about hypex balanced vs unbalanced
  170. Soundcraftsmen
  171. very small noob question project 88
  172. Help with cable conundrum!
  173. P7 Pre amp Trouble
  174. Party-line / Full-duplex intercom - mixing audio signals
  175. ZSP1 preamp gain
  176. Acurus L10 Powersupply
  177. Building an Analog to Digital Converter Unit...
  178. DIY pre amp board
  179. Opamp power bypass
  180. Tone Control - Volatage range for TL072/LF252-N
  181. Stereo volume attenuation
  182. Quad channel volume control
  183. Work? L, R RCA inputs -> 1 XLR out?
  184. Impedance matching pre -> power.
  185. LME49740 vs TL074, design considerations and stability
  186. Solid state R2R attenuator using analog switches or multiplying DAC
  187. MF nuvista source selector problem again
  188. What do we think about solid-state potentiometers?
  189. TubeCAD's ACF2 as a active crossover
  190. Phaseca--My new diy pre amp
  191. looking for bass treble pcb pattern
  192. Mobile recording using linein
  193. [Need] simple preamp and LPF based on 5532 for digital sources
  194. wall-based trasformer volume control as passive pre?
  195. noob stab in the dark - riaa preamp
  196. Oscillating Op-Amp
  197. Preamp for shotgun mic
  198. Mark Levinson No 38, Need Help
  199. Help! Kenwood Basic C-2 left channel out (phono only)
  200. Signal delay schematic
  201. Adding 4 channels to a 2 channel input on HT amp
  202. vumeter (stereo, mono)
  203. Acquired Some Elan Components, What are They?
  204. Pre-mix for boombox
  205. Reed Switch Audio Attenuator
  206. "Balanced" PGA2311?
  207. 2 way crossover on Chinese pcbs
  208. SE to Balanced pre question
  209. Interconnect Ground Cable Ground Loops
  210. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  211. Any AIKIDO-philes who know why Broskie has changed the formula
  212. One More Overcomplicated Mic Preamp
  213. Problems with subwoofer phase control picking up noise
  214. IC's get hammered
  215. Left/Right channel balance control
  216. Potentiometer Selection
  217. All-In-One Preamp Circuit
  218. Line level mixing
  219. Booze Hounds Labs Phono any good?
  220. PLLXO - Am I doing this right?
  221. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  222. Switching Noise Between Preamps
  223. Bluetooth Lightspeed attenuator
  224. Help getting 5.1 preamp from Ebay repaired please!
  225. Should using balanced cables to amplified monitors improve sound ?
  226. Apox Audio preamp reborn with the power of Arduino
  227. Does an Op Amp Voltage Follower Operate in Class A?
  228. My boozehound phono stage build
  229. Pre amp kit
  230. balanced preamplifier based on LME49990
  231. Merging two channels with passive low passes
  232. Old Colony Sound Lab T-2D Line Amp - Any Info?
  233. Impedance Bridging and Isolation Tranformer
  234. TDA7315 chip parameters interpretation
  235. MFP-102 N fet compatibility
  236. What is the effect of a 22K res in series with a 25K volume pot?
  237. Senior Project: Bandpass Equalizer pedal
  238. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  239. ORTF is best for stereo recording
  240. A zero impedance preamp and CMRR
  241. good preamp
  242. calculate crossover with Re or impedance ?
  243. Op-Amp Preamp Circuit for Electret Mic
  244. Simple Router (then bass management)
  245. Second order shelving filter
  246. Help with component selection.
  247. passive to tame 8khz peak
  248. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  249. Adcom GFP-750 -Needs Repair
  250. Variable gain op-amp for volume control (vs normal voltage divider pot)

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