View Full Version : Analog Line Level

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  1. Can I make a really simplistic line-level signal go mono one way, stereo in parallel?
  2. Aikido - approximate input impedance
  3. Ultimate analogue tone control or an audiophool overkill? :)
  4. A remote control preamp in the works
  5. Custom Equalizer Design needed
  6. Multichannel preamp
  7. Hafler Iris Preamp balance issue - fixed
  8. Acurus L10 Preamp Mods & Schematic
  9. Home made DSP / FPGA digital audio mixer
  10. Soundcraft LX7 Replacement parts
  11. Bonsai's practical buffer
  12. Help needed with an audio signal splitter solution
  13. Crosstalk?
  14. i want to throw something
  15. Optimizing resistor placement Vishay TX2575
  16. Input impedance of PRE vs sensitivity to disturbance
  17. PIC Controlled PGA 2320 8 Channel Preamp
  18. How to change a degree of volume pot rotation by remote control?
  19. tamura input transformer shield
  20. Need a help: Mark Levinson No26.
  21. LME49720 Pre amp PCB/Kit
  22. Faulty mixer inputs
  23. Basic home cinema wiring advice
  24. Diamond Cascode, a Diamond-like buffer/current booster
  25. Unusual high-pitched whistle caused by my Audio Pre-AMP
  26. Looking to build stereo mixer but can't find many schematics!
  27. Aureus preAmplifier
  28. strange! LM-4562 question
  29. Tube Preamp hummmmmm
  30. LCDuino-1 Processor, using non-latching relays help
  31. CS3318 PCB Layout
  32. Levels in an active three-way system
  33. Source selector using Analog switches or multiplexers - opinions?
  34. Yet another PGA23xx board...
  35. Concentric shaft Alps "Blue" pot
  36. Cleaning dusty printed circuit boards
  37. ad797 plus buf634
  38. Bypass - ceramic or film?
  39. tweeter crossover
  40. This pre-amp good?
  41. Remote Control Pot
  42. VU Meter ballistics
  43. The "AmpDuino" project
  44. Capacitors at 50v vs 25v on replacement in preamp power supply?
  45. Knocking sound coming from PCB
  46. Versatile quad-amp card
  47. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  48. Just built a Hagerman Cornet 2 phono pre
  49. ad797 questions
  50. [Newbie]Audio bandpass filter design
  51. Wideband DCA preamp with shunt PS
  52. 3-way input selector + Attenuator + Balanced outputs?
  53. subwoofer circuit
  54. Motorised Volume Pot - Controller isolation
  55. Audio compressor to lower TV commercials-help needed
  56. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  57. 2ch passive stereo summing circuit?
  58. designing a 1-Hz lowpass with no DC error
  59. What is a preamp actually doing?
  60. Choosing attenuator for MF X-10D Clone
  61. some questions about DC servo mic pre's
  62. Need hekp with how to select a preamp
  63. Weird problem with a preamp with 3 band EQ module
  64. TEAC VU Meter Hookup
  65. input transformer frequency response?
  66. Help wanted checking vero layout for active 4 channel mixer
  67. Simple non-digital input selector
  68. dc on only one primary of the line trafo
  69. Volume potmeter Technics Su 8600
  70. Servo on non-inverting opamp ?
  71. Any suggestions to improve these output and input filters?
  72. simple solution for VU-Meter
  73. Combined Speaker-Amplifier Project
  74. Teac AN-60 Alignment
  75. 2.5v achieves lower distortion on LDR NSL32SR2
  76. Help Gain clone supply PCB design
  77. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  78. 3-way signal splitter
  79. implimenting linkwitz's notch/dip filter for room eq
  80. Anyone seen this EQ before?
  81. ReCapping marantz av-9000 16v 13000uf
  82. Audio Processing
  83. Anyone know what these caps are for?
  84. Is coax needed to wire a microphone?
  85. How do I choose a preamplifier that would be compatible with this microphone?
  86. W06M – Bridge Rectifier, equivalent substitute
  87. Preamplifier kit information
  88. Handling +4dBu/-10dBv and un/balanced
  89. Line receiver and driver pcb?
  90. 2 conductor shielded cable
  92. 20hz high pass on Ashly XR2000 - removable?
  93. Transformer Based Balanced Output & Impedance
  94. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  95. John Bowers Active Control Unit preamp: Info sought
  96. Looking for pointers on first DIY preamp please.
  97. Simple analog vu-meter driver ?
  98. Please pardon the noob question. need guidance
  99. Build a high pass filter for amplifier
  100. Critique on success of this subwoofer cutoff project?
  101. Need gain AMOUNT for mobile phone/pc sources
  102. re-replacing 2sk213/j76 transistors help
  103. Preventing crossover between mixers
  104. RCA LMI- 32215 A - for recording studio.
  105. Rane pot help please...
  106. Simple low voltage tube preamp stage
  107. HELP me design a discrete current sinking positive V regulator
  108. True Biamping and Active crossovers info request
  109. Question about hypex balanced vs unbalanced
  110. Soundcraftsmen
  111. very small noob question project 88
  112. Help with cable conundrum!
  113. P7 Pre amp Trouble
  114. Party-line / Full-duplex intercom - mixing audio signals
  115. ZSP1 preamp gain
  116. Acurus L10 Powersupply
  117. Building an Analog to Digital Converter Unit...
  118. DIY pre amp board
  119. Opamp power bypass
  120. Tone Control - Volatage range for TL072/LF252-N
  121. Stereo volume attenuation
  122. Quad channel volume control
  123. Work? L, R RCA inputs -> 1 XLR out?
  124. Impedance matching pre -> power.
  125. LME49740 vs TL074, design considerations and stability
  126. Solid state R2R attenuator using analog switches or multiplying DAC
  127. MF nuvista source selector problem again
  128. What do we think about solid-state potentiometers?
  129. TubeCAD's ACF2 as a active crossover
  130. Phaseca--My new diy pre amp
  131. looking for bass treble pcb pattern
  132. Mobile recording using linein
  133. [Need] simple preamp and LPF based on 5532 for digital sources
  134. wall-based trasformer volume control as passive pre?
  135. noob stab in the dark - riaa preamp
  136. Oscillating Op-Amp
  137. Preamp for shotgun mic
  138. Mark Levinson No 38, Need Help
  139. Help! Kenwood Basic C-2 left channel out (phono only)
  140. Signal delay schematic
  141. Adding 4 channels to a 2 channel input on HT amp
  142. vumeter (stereo, mono)
  143. Acquired Some Elan Components, What are They?
  144. Pre-mix for boombox
  145. Reed Switch Audio Attenuator
  146. "Balanced" PGA2311?
  147. 2 way crossover on Chinese pcbs
  148. SE to Balanced pre question
  149. Interconnect Ground Cable Ground Loops
  150. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  151. Any AIKIDO-philes who know why Broskie has changed the formula
  152. One More Overcomplicated Mic Preamp
  153. Problems with subwoofer phase control picking up noise
  154. IC's get hammered
  155. Left/Right channel balance control
  156. Potentiometer Selection
  157. All-In-One Preamp Circuit
  158. Line level mixing
  159. Booze Hounds Labs Phono any good?
  160. PLLXO - Am I doing this right?
  161. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  162. Switching Noise Between Preamps
  163. Bluetooth Lightspeed attenuator
  164. Help getting 5.1 preamp from Ebay repaired please!
  165. Should using balanced cables to amplified monitors improve sound ?
  166. Apox Audio preamp reborn with the power of Arduino
  167. Does an Op Amp Voltage Follower Operate in Class A?
  168. My boozehound phono stage build
  169. Pre amp kit
  170. balanced preamplifier based on LME49990
  171. Merging two channels with passive low passes
  172. Old Colony Sound Lab T-2D Line Amp - Any Info?
  173. Impedance Bridging and Isolation Tranformer
  174. TDA7315 chip parameters interpretation
  175. MFP-102 N fet compatibility
  176. What is the effect of a 22K res in series with a 25K volume pot?
  177. Senior Project: Bandpass Equalizer pedal
  178. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  179. ORTF is best for stereo recording
  180. A zero impedance preamp and CMRR
  181. good preamp
  182. calculate crossover with Re or impedance ?
  183. Op-Amp Preamp Circuit for Electret Mic
  184. Simple Router (then bass management)
  185. Second order shelving filter
  186. Help with component selection.
  187. passive to tame 8khz peak
  188. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  189. Adcom GFP-750 -Needs Repair
  190. Variable gain op-amp for volume control (vs normal voltage divider pot)
  191. Germanium Transistor and FET opamp
  192. 5 zone preamp based on Arduino controlled optocoupler
  193. How to select the right impedance for volume control
  194. In vehicle Pre-amp for mic (12+ VDC)
  195. Resistor-Diode-Relay Logic Source Selector
  196. 3 into 1 input the other way round
  197. Nagging Ground Issue
  198. Looking for Princeton Applied Research 115 MANUAL
  199. Active Band Pass Filter with +/- Gain
  200. Components source
  201. Guitar ABY or Headphone Amplifier?
  202. rod elliot p88 preamp knob arrangment
  203. C-Mos opamps in audio preamplifiers
  204. Cheap, balanced XLR passive pre?
  205. DIY crossover - Sallen-Key?
  206. Hafler 915 preamp cap question
  207. analog 3.5mm to digital usb possible?
  208. Mixer Pre-amp
  209. DIY tube preamp - help with choosing the right kit
  210. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  211. MC-22 schematic question
  212. unbalanced/balanced to balanced converter
  213. My line buffer preamp
  214. Attenuating Preamp Filter Question
  215. biamping with one DAC
  216. Audiophile active crossover
  217. adding EQ without screwing up sound; few questions...
  218. SSTART Pcb and power supply project
  219. Help with a simple envelop detector filter. (averaging the signal)
  220. audio output switch? Monitor Controller
  221. Very simple volume control with IR remote
  222. JFETs and MOSFETs biasing questions
  223. I need advise on audio mixing boards?
  224. pre amp output
  225. OPA134 Amp Help
  226. OPA134
  227. Capacitors voltage rating
  228. Capacitors voltage rating
  229. attenuation on dac output with U-pad
  230. passive preamp
  231. preamp necessary?
  232. Will phono pre > passive pre > amp work well enough?
  233. 60Hz hum problem, please help
  234. distortion cancellation for diode limiter
  235. electret mic preamp for micro ADC
  236. Understanding "Voltage - Input Offset" Parameter
  237. Schade MOSFET + Feedback Line Amp
  238. Preamp or receiver?
  239. Sony BX-270 Datasheet Wanted
  240. Classe Audio DR6 Bias
  241. Dual gang potentiometer for 'mixer'
  242. Aikido Preamp Bass & Treble Controls
  243. Tried active crossover, mean hum...
  244. How to use TDA7439 for center and subwoofer
  245. Active notch filter
  246. simple pre amp volume control with seperate mono out
  247. Help me wire up my SUT correctly (Tamura TKS-27)
  248. How can I split a mixer bus?
  249. Beau's Bias Circuit Schematic
  250. What should be included in a subwoofer lowpass filter?

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