View Full Version : Analog Line Level

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  1. Please suggest to me the best affordable LDR preamp kits
  2. Custom Rotary DJ mixer.
  3. Programmer-help for fleabay-remote-kit
  4. Wiring advice for internal pre amp inputs
  5. Discrete Opamp Open Design
  6. microprocessor And control
  7. Latest project.
  8. Remote control won't shut up
  9. Looking to DIY a DI box -10dBv to +4dBu
  10. pre amp suggestions, DIY or Non DIY, Im easy
  11. Musical Fidelity Pre Amp II
  12. Help with DIY passive balanced line level attenuator pads.
  13. RF-blocking???
  14. Jfet Line preamp, to cascode or not.
  15. Mic pre strange high-freq boost (what is broken here?)
  16. New pre amp coming. Change over to 115V help...
  17. XO of Mission 770mk2
  18. Equaliser design for a total n00b
  19. Trying to remote control volume on vintage HK
  20. Passive Pre Chassis and Budget Allocation
  21. Linkwitz Transforms
  22. INA217 is noisy
  23. need sound attenuator
  24. NAIM NAC 42.5 Vintage for my updated NYTECH CPA 602 - 2012
  25. Volume Control Problem
  26. Balanced Signal over 500 Metres!
  27. Single voltage powered Tone Control
  28. PGA2320 and Atmega8 Bascom Source Code Problem
  29. Tone Control Filter
  30. phase linear filters - any good?
  31. Summing (2x) opposite-phase signals with Transformers
  32. A circuit to monitor the analog audio line level
  33. diy Pre-amp question
  34. Critique please: Analogue -> Digital (TOS-LINK)
  35. Circuit Diagram wanted
  36. Xkitz 2-way Active Crossover Kit
  37. Need orientation with tweaking a TASCAM MF-P01
  38. Connecting Multiple op amp inputs from a single op amp output
  39. digital output
  40. Balanced Buffer Needed with a Balanced Volume Control?
  41. $150-200$ Preamp Build?
  42. Balanced tube preamplifier: suggestions?
  43. Adding summed output for sub
  44. Please help me understand this circuit...newbie here
  45. lpf and hpf setting.
  46. After search...need schematic to stereo preamp with only 4 bjt transistors
  47. Help with Zero Field input circuit
  48. The XCEN -- Balanced to Single Ended Converter
  49. Building active cross-overs into multiple power amps?
  50. "Firefly" Unity Gain Buffer
  51. Parasound P/LD 1500 hissing sound in left channel
  52. another studiomaster story
  53. Transformer with 3 secondaries
  54. Need sub woofer controller
  55. Subwoofer controller
  56. APT audio products
  57. how to hook up my preamp for recording??
  58. Class A preamp: please critique my circuit and give me helpful suggestions.
  59. Mixing slope types?
  60. Measuring Line Level Output?
  61. Buss Channel with Noise after wrong soldered bypass Cap.
  62. Volume pot for line level stereo
  63. Studiomaster 16-4
  64. Opinions: Class A Zen Preamplifier eBay Kit
  65. OpAmp based Summing circuit -- Is greater than Unity Gain here a technical problem?
  66. HELP differntial audio
  67. Part needed: Counterpoint SA-1000 tape/source toggle
  68. dc coupled aikido output?
  69. Ipod Stereo to mono summing
  70. DIY preamp component choice
  71. Velleman K8084 Earthing / Grounding
  72. Active Tone Control and preamp. Need help urgent!
  73. Repairing my balanced inputs
  74. Help with preamp build
  75. Tape out of passive preamp into passive preamp/remove resistors?
  76. SE-ONE Spatial Enhancer
  77. Potmeter to balanced amp= Hum; Help!
  78. LEDs as references in current sources
  79. Looking for inkel pp 821 pre amp service manual
  80. Original Mezmerize thread?
  81. Active xover help.
  82. The Effects Of High Resistance Interconnects
  83. dual balanced ne5534 schematic
  84. JA Pre and MyRef - FE Integration
  85. RFI filter and DC blocking cap
  86. Dyanmic mic to electret type input
  87. Help with audio test equipment design
  88. Simple precision constant current LDR controller
  89. How to control 10 pots in active cross?
  90. HF to LF shelving filter
  91. Lawo W990VS/9 - Connection Question
  92. GlassWare Audio
  93. Source select and passive volume for microcontroller-based preamp?
  94. Microcontroller stepped LDR
  95. Newbie question - PCB mounting
  96. PGA2310 based preamp+ remote
  97. Summing Amp Transformers
  98. Krell KSL AC Conversion 110 -> 240
  99. Insert-send to balanced converter
  100. That 1512 fixed gain follow by a second stage
  101. "Tape Out" on DIY Passive Pre
  102. Help to make a pcb for portable stereo preamp ?
  103. Modifying Maplin preamp kit
  104. Help choosing opamp for this circuit
  105. Help! Microphone impedance matching?
  106. adding opamp filter stage
  107. parametric filter to shelving
  108. opamps - fakes?
  109. combine active xo and parametric eq
  110. Discussion of CCS control for LED/LDR volume adjustment
  111. Small Signal Transistor and Diode Models from NXP
  112. Output Transformer Waveform- Is it good or not?
  113. TL082 Preamp Instability
  114. HELP! line-level crossover design for solar-powered biamped soundsystem
  115. How to integrate Baffle Step Compensation into existing discrete linestage?
  116. Fundamental Oscilliscope Usage
  117. Balanced buffers - analogue volume control
  118. A second order active filter with single supply - Zin ?
  119. Tamradio 600:600 Transformers
  120. Input bias current and impedance of an op amp?
  121. Otari MX7000
  122. Vca's
  123. Optimum value for R(s) in a JFET follower?
  124. Active preamp gain
  125. complementary jfet input trimmer
  126. Looking for a PGA2320 PCB
  127. Looking for discrete high performance linestage design with 12v rails
  128. Which power transformer for low hum?
  129. 2SA1015 SRPP follower bridge mode
  130. H/K 595 subwoofer connect to Aiwa reciever.
  131. Aragon 47k Schematics?
  132. Best OP-amp for EQ circuit?
  133. Broskie
  134. Active Stereo Preamp , OPAMP VS TRANSISTORS , which on would you prefer ?
  135. XLR jacks
  136. Which Aikido?
  137. Electret Mic Power Circuit for PC Input
  138. Soundcraft B100 (TL072...again)
  139. XLR, RCA and CMRR - a few questions
  140. Help Designing Preamp Schematic
  141. Here's a weird enquiry
  142. C1583 & A798
  143. Volume Control with symmetrical out and in
  144. Building a Tee attenuator
  145. Noise in balanced outputs - Parasound
  146. Need some advice on a level booster...
  147. INA134-DRV134 balanced preamp
  148. how to add protection circuits (swith circuit)
  149. resistor(s) in ground paths to reduce hum, etc.
  150. My (quick and dirty) take at a PLLXO for OB, help is welcome
  151. Lundahl LL1530 - audio application?
  152. SP-6 Light with ECC801S
  153. Active crossover help
  154. Line Level Preamp, Using JFETs, in a can.
  155. Replacement push buttons for hafler?
  156. My fuzz pedal project is behaving badly
  157. My fuzz pedal project is behaving badly
  158. Op-amp Upgrade
  159. Output transformers for Line-level signal.
  160. PGA2310 control module
  161. Shields in internally balanced equipment
  162. First effort: MM/MC phono preamp with DC servo
  163. How to figure gyrator treble boost gain
  164. AirTight ATC-2 Preamp Pictures
  165. Need help with the NE5543N opamp
  166. help building a crossover/lowpass filter
  167. Poles and throws?
  168. DC buildup in Linkwitz Transform
  169. BOZ (bride of Zen) advices asked - things to do/avoid
  171. Adjustable Linkwitz-Riley filter: Help needed with SPICE
  172. Variable active high pass filter .
  173. What advantage to use OP to summing signal ?
  174. Transformer malfunction??'
  175. Fader Penny Giles and Active Level control
  176. Is this filtering really needed ?
  178. Balanced vs Unbalanced -Basics
  179. Humorous mistake in Douglas Self Active Crossovers book
  180. preamp and tone control circuit with pcb
  181. Noisy 'clickless' analogue switches
  182. Preamp needed, or am I missing something?
  183. Volume Control Clicks
  184. Audio Research SP-10 Clone HELP please
  185. Selector switch
  186. repairing/recycling RCA cable
  187. Klimo Merlin rebuilding
  188. Analog Signal to fire Contact Closure
  189. Cello Palette Style EQ Design (was High End Tone Control)...
  190. LDR attenuators - Better balance with DC bias
  191. Acoustic Guitar Pre/Comp/EQ/Blender/DI
  192. Where is the point of diminishing returns with caps in passive crossovers?
  193. Preamp output protection
  194. Lexicon Master Re-boot?
  195. Grounding in balanced passive pre?
  196. Preamp knob where to buy...
  197. Transcendent Sound GG help
  198. Signal level
  199. Advice on a simple preamp
  200. Balanced and Unbalanced signals in a Control Room Monitor
  201. Audio Delay Circuit
  202. Shielded Umbilical Question
  203. TEAC 80-8 head spec
  204. DC on Lightspeed-attenuator possible
  205. DC on Lightspeed-attenuator possible
  206. Light Dependant Resistor Current Control
  207. Broskie Unbalancer - manual query?
  208. Op-amp Guilt feel.
  209. simple active crossover
  210. Attenuation Versus Gain
  211. fake signal to bypassed inserts
  212. How to Mult (aka split) a line signal into 8 identical buffered outputs... properly!
  213. Mic preamp
  214. Silicon Chip Pre-amp not switching inputs
  215. Making a very simple volume control
  216. consumer --- > commercial
  217. Need advice isolating subwoofer channel from main L/R channels.
  218. What type of diode should i use in this circuit?
  219. Plz advise on balanced pot wiring
  220. Protecting my amp during circuit tests
  221. Pre amp output shorted?
  222. 4 channel mixer circuit?
  223. Wiring a Pot
  224. How to make a phase inverter?
  225. line level volume control
  226. Equalizer
  227. RL passive high pass line level filter
  228. Denon D-75 & diy plinth
  229. Many questions on mhennessy's Hi-Fi preamp (mainly about power-fail detect circuit)
  230. LF03 discrete opamp
  231. passive line level filter question
  232. DIC Integrated amplifier - seventies
  233. Sound Quality on Unity gain opamp
  234. PGA2310 Line Preamplifier + Free Software
  235. Remotely Controlled Motorized Volume Pot.
  236. Preamp Kit - New DIY'er
  237. Pre-Amp Mods - Suggestions
  238. why not use quarter inch stereo jacks for connecting hifi
  239. BSG Technologies QOL "Signal Completion Stage"
  240. What is the best use of 12AT7?
  241. Popping noise on input selector switch
  242. 3 TRS in, 3 TRS out, 1 knob volume.
  243. Fostex Volume Control "PC1EX" - Schematic wanted
  244. Schematic Focusrite Octopre??
  245. multichannel volume control
  246. JC-80 eBay PCBs & Power Train
  247. Parametric EQ values?
  248. Recommend a first diy phono pre-amp?
  249. Phono problems one side working
  250. TL071 question

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