View Full Version : Analog Line Level

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  1. digital output
  2. Balanced Buffer Needed with a Balanced Volume Control?
  3. $150-200$ Preamp Build?
  4. Balanced tube preamplifier: suggestions?
  5. Adding summed output for sub
  6. Please help me understand this circuit...newbie here
  7. lpf and hpf setting.
  8. After search...need schematic to stereo preamp with only 4 bjt transistors
  9. Help with Zero Field input circuit
  10. The XCEN -- Balanced to Single Ended Converter
  11. Building active cross-overs into multiple power amps?
  12. "Firefly" Unity Gain Buffer
  13. Parasound P/LD 1500 hissing sound in left channel
  14. another studiomaster story
  15. Transformer with 3 secondaries
  16. Need sub woofer controller
  17. Subwoofer controller
  18. APT audio products
  19. how to hook up my preamp for recording??
  20. Class A preamp: please critique my circuit and give me helpful suggestions.
  21. Mixing slope types?
  22. Measuring Line Level Output?
  23. Buss Channel with Noise after wrong soldered bypass Cap.
  24. Volume pot for line level stereo
  25. Studiomaster 16-4
  26. Opinions: Class A Zen Preamplifier eBay Kit
  27. OpAmp based Summing circuit -- Is greater than Unity Gain here a technical problem?
  28. HELP differntial audio
  29. Part needed: Counterpoint SA-1000 tape/source toggle
  30. dc coupled aikido output?
  31. Ipod Stereo to mono summing
  32. DIY preamp component choice
  33. Velleman K8084 Earthing / Grounding
  34. Active Tone Control and preamp. Need help urgent!
  35. Repairing my balanced inputs
  36. Help with preamp build
  37. Tape out of passive preamp into passive preamp/remove resistors?
  38. SE-ONE Spatial Enhancer
  39. Potmeter to balanced amp= Hum; Help!
  40. LEDs as references in current sources
  41. Looking for inkel pp 821 pre amp service manual
  42. Original Mezmerize thread?
  43. Active xover help.
  44. The Effects Of High Resistance Interconnects
  45. dual balanced ne5534 schematic
  46. JA Pre and MyRef - FE Integration
  47. RFI filter and DC blocking cap
  48. Dyanmic mic to electret type input
  49. Help with audio test equipment design
  50. Simple precision constant current LDR controller
  51. How to control 10 pots in active cross?
  52. HF to LF shelving filter
  53. Lawo W990VS/9 - Connection Question
  54. GlassWare Audio
  55. Source select and passive volume for microcontroller-based preamp?
  56. Microcontroller stepped LDR
  57. Newbie question - PCB mounting
  58. PGA2310 based preamp+ remote
  59. Summing Amp Transformers
  60. Krell KSL AC Conversion 110 -> 240
  61. Insert-send to balanced converter
  62. That 1512 fixed gain follow by a second stage
  63. "Tape Out" on DIY Passive Pre
  64. Help to make a pcb for portable stereo preamp ?
  65. Modifying Maplin preamp kit
  66. Help choosing opamp for this circuit
  67. Help! Microphone impedance matching?
  68. adding opamp filter stage
  69. parametric filter to shelving
  70. opamps - fakes?
  71. combine active xo and parametric eq
  72. Discussion of CCS control for LED/LDR volume adjustment
  73. Small Signal Transistor and Diode Models from NXP
  74. Output Transformer Waveform- Is it good or not?
  75. TL082 Preamp Instability
  76. HELP! line-level crossover design for solar-powered biamped soundsystem
  77. How to integrate Baffle Step Compensation into existing discrete linestage?
  78. Fundamental Oscilliscope Usage
  79. Balanced buffers - analogue volume control
  80. A second order active filter with single supply - Zin ?
  81. Tamradio 600:600 Transformers
  82. Input bias current and impedance of an op amp?
  83. Otari MX7000
  84. Vca's
  85. Optimum value for R(s) in a JFET follower?
  86. Active preamp gain
  87. complementary jfet input trimmer
  88. Looking for a PGA2320 PCB
  89. Looking for discrete high performance linestage design with 12v rails
  90. Which power transformer for low hum?
  91. 2SA1015 SRPP follower bridge mode
  92. H/K 595 subwoofer connect to Aiwa reciever.
  93. Aragon 47k Schematics?
  94. Best OP-amp for EQ circuit?
  95. Broskie
  96. Active Stereo Preamp , OPAMP VS TRANSISTORS , which on would you prefer ?
  97. XLR jacks
  98. Which Aikido?
  99. Electret Mic Power Circuit for PC Input
  100. Soundcraft B100 (TL072...again)
  101. XLR, RCA and CMRR - a few questions
  102. Help Designing Preamp Schematic
  103. Here's a weird enquiry
  104. C1583 & A798
  105. Volume Control with symmetrical out and in
  106. Building a Tee attenuator
  107. Noise in balanced outputs - Parasound
  108. Need some advice on a level booster...
  109. INA134-DRV134 balanced preamp
  110. how to add protection circuits (swith circuit)
  111. resistor(s) in ground paths to reduce hum, etc.
  112. My (quick and dirty) take at a PLLXO for OB, help is welcome
  113. Lundahl LL1530 - audio application?
  114. SP-6 Light with ECC801S
  115. Active crossover help
  116. Line Level Preamp, Using JFETs, in a can.
  117. Replacement push buttons for hafler?
  118. My fuzz pedal project is behaving badly
  119. My fuzz pedal project is behaving badly
  120. Op-amp Upgrade
  121. Output transformers for Line-level signal.
  122. PGA2310 control module
  123. Shields in internally balanced equipment
  124. First effort: MM/MC phono preamp with DC servo
  125. How to figure gyrator treble boost gain
  126. AirTight ATC-2 Preamp Pictures
  127. Need help with the NE5543N opamp
  128. help building a crossover/lowpass filter
  129. Poles and throws?
  130. DC buildup in Linkwitz Transform
  131. BOZ (bride of Zen) advices asked - things to do/avoid
  133. Adjustable Linkwitz-Riley filter: Help needed with SPICE
  134. Variable active high pass filter .
  135. What advantage to use OP to summing signal ?
  136. Transformer malfunction??'
  137. Fader Penny Giles and Active Level control
  138. Is this filtering really needed ?
  140. Balanced vs Unbalanced -Basics
  141. Humorous mistake in Douglas Self Active Crossovers book
  142. preamp and tone control circuit with pcb
  143. Noisy 'clickless' analogue switches
  144. Preamp needed, or am I missing something?
  145. Volume Control Clicks
  146. Audio Research SP-10 Clone HELP please
  147. Selector switch
  148. repairing/recycling RCA cable
  149. Klimo Merlin rebuilding
  150. Analog Signal to fire Contact Closure
  151. Cello Palette Style EQ Design (was High End Tone Control)...
  152. LDR attenuators - Better balance with DC bias
  153. Acoustic Guitar Pre/Comp/EQ/Blender/DI
  154. Where is the point of diminishing returns with caps in passive crossovers?
  155. Preamp output protection
  156. Lexicon Master Re-boot?
  157. Grounding in balanced passive pre?
  158. Preamp knob where to buy...
  159. Transcendent Sound GG help
  160. Signal level
  161. Advice on a simple preamp
  162. Balanced and Unbalanced signals in a Control Room Monitor
  163. Audio Delay Circuit
  164. Shielded Umbilical Question
  165. TEAC 80-8 head spec
  166. DC on Lightspeed-attenuator possible
  167. DC on Lightspeed-attenuator possible
  168. Light Dependant Resistor Current Control
  169. Broskie Unbalancer - manual query?
  170. Op-amp Guilt feel.
  171. simple active crossover
  172. Attenuation Versus Gain
  173. fake signal to bypassed inserts
  174. How to Mult (aka split) a line signal into 8 identical buffered outputs... properly!
  175. Mic preamp
  176. Silicon Chip Pre-amp not switching inputs
  177. Making a very simple volume control
  178. consumer --- > commercial
  179. Need advice isolating subwoofer channel from main L/R channels.
  180. What type of diode should i use in this circuit?
  181. Plz advise on balanced pot wiring
  182. Protecting my amp during circuit tests
  183. Pre amp output shorted?
  184. 4 channel mixer circuit?
  185. Wiring a Pot
  186. How to make a phase inverter?
  187. line level volume control
  188. Equalizer
  189. RL passive high pass line level filter
  190. Denon D-75 & diy plinth
  191. Many questions on mhennessy's Hi-Fi preamp (mainly about power-fail detect circuit)
  192. LF03 discrete opamp
  193. passive line level filter question
  194. DIC Integrated amplifier - seventies
  195. Sound Quality on Unity gain opamp
  196. PGA2310 Line Preamplifier + Free Software
  197. Remotely Controlled Motorized Volume Pot.
  198. Preamp Kit - New DIY'er
  199. Pre-Amp Mods - Suggestions
  200. why not use quarter inch stereo jacks for connecting hifi
  201. BSG Technologies QOL "Signal Completion Stage"
  202. What is the best use of 12AT7?
  203. Popping noise on input selector switch
  204. 3 TRS in, 3 TRS out, 1 knob volume.
  205. Fostex Volume Control "PC1EX" - Schematic wanted
  206. Schematic Focusrite Octopre??
  207. multichannel volume control
  208. JC-80 eBay PCBs & Power Train
  209. Parametric EQ values?
  210. Recommend a first diy phono pre-amp?
  211. Phono problems one side working
  212. TL071 question
  213. Forte F44 preamp, DC Voltage leak
  214. To build a high pass RL line level filter
  215. If You Don't Have a SIT, Fake It...
  216. 3 core audio cable
  217. Another Remote Alps
  218. matching sine wave wave file / expert opinion
  219. Can a delay circuit be beneficial between bass and mids?
  220. Exponential programmable resistor
  221. Balanced interconnect with 2 x 75 ohm coax cables?
  222. Volume Control Kit/Controller to work with WMCE-remotes
  223. cs3318 and arduino
  224. Anyone knows if Khozmo guy is still around
  225. What kind of connector is this and how can it be fixed?
  226. "8 ohm 3 way x-over" mod for 4ohm woofer ?
  227. 6SN7 Tube pre
  228. 2 channel to 7.1
  229. Pass Aleph L1.2
  230. Chinese mini VU Meters
  231. Three opamp 24db/oct crossover?
  232. Parametric EQ for subwoofer?
  233. Kit or Behringer ?
  234. Redesigning a cheap obsolete 8-track pre-amp.
  235. Help with circuit for preamp with eq and balanced output powered by phantom power
  236. Inexspensive volume control chips
  237. Linkwitz ASP Custom Build
  238. Shielded cable or faraday cage or both?
  239. Upgraded opamp in preamp and now there is a hum/buzz
  240. GFP-555
  241. mic tube preamp as line stage
  242. AV / HT Preamp
  243. audio matrix
  244. mic pre application buffer op-amp question
  245. Does this preamp look any good?
  246. Replacement for LM833 in active crossover
  247. Not another project yet
  248. RJM Audio B-Board Project
  249. Cause of weak Preamp channel
  250. Schematic Boston PV700

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