diyAudio > Source & Line > Analog Line Level

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1. Valve pre amp/phono stage
2. simple pre with offset problem
3. Crown IC150A board layout
4. Burr-Brown DRV134 AUDIO BALANCED LINE Receiver schematic PCB/Kit anybody?
5. analogue VU-meter
6. Quad 34 preamp tilt pot resistance ?
7. What phono preamp circuit?
8. Balance control R Values
9. Help designing device to drain voltage?
10. What Volume pot and selector?
11. Pre Fader Listen Logic Switching
12. linkwitz-riley 3way and 2way pcb kit??
13. Which pre pcb build will suit me?
14. Subsonic filter options
15. Preamp Project
16. Arcam AVP700 - turns off at random
17. why there is a spike sound output from the speaker when turn off?
18. Sowter-based TVC
19. My unbalanced line mixer design needs something...
20. Tube or SS Preamp?
21. Marantz Consolette Schematic
22. Is it possible to modify this mic preamp?
23. LDR Switch?
24. Tube preamp hum and noise.
25. How to modify the preamp audio circuit ??
26. Wiring Balanced Volume Pots?
27. INA217 DRV134 Opamp bypass caps
28. Capacitor Across Power Switch to Control Switch On Noise?
29. Multi input (with phono) preamp kits?
30. DIY Dancing Needle Box
31. Phantom power INA217
32. AV amps for use as crossovers and amps
33. Basic Common Emitter Amp Help
34. Minimalist Soft Start for 2sk170 Preamp
35. INA217 Blocking capacitors
36. Ina217-drv134
37. The "Sound" of Electronics vs Transducers
38. Ina217 drv134
39. Mark Levinson No 28 capacitors
40. Dummy load with output to power amp
41. SRPP+ from Glass Ware needs some help please
42. Guitar preamp envelope follower
43. What's the Best input volage for TA2020?
44. NOS user would appreciate review of PLLXO plans
45. value of capacitors in signal path
46. 15v dual power supply problem. need help
47. Let's talk volume control alternatives?
48. Lightspeed name change, any suggestions
49. RJM Audio Gainbloc Preamplifier Mk. I
50. Passive attenuation.
51. Audio selector switch
52. Adcom GFP-710 volume pot motor input voltage
53. JDI Preamp Information Anyone?
54. Mic preamp
55. Electrocompaniet Preampliwire 1A Schematic
56. P88 sound leakage
57. How to DIY Attenuated Interconnects?
58. Parasound P/LD-1500 schematics
59. Passive preamp signal ground
60. KENWOOD L-07 CII preamp
61. PS for simple fet preamp
62. My RF controled PGA2320 MiniVol and ch selector
63. Meridian 501 Preamp Schematic
64. LDR photoresistor attenuator preamp, in general
65. JFET Mic Preamp Advice
66. ACTIVE CROSSOVER: OPAM decision!
67. LDR attenuator questions
68. recommendations for commercial preamp
69. Cheap Valve Preamp power supply?
70. 2N2222A phono preamp
71. Difference Direct-, Normal- polarity
72. ESP Project 94A, What am I doing wrong? (Simple Mixer)
73. read out position of normal potentiometer
74. Electrocompaniet Preampliwire 1
75. Evaluate first preamp
76. Kit Preamp for Sophia Electric Baby
77. Pedja Rogic JFET or Nelson Pass B1?
78. oAudio BASH 500w high-pass/boost filter schematics/sim here
79. Yaquin MS12-B: sending signal to two amps?
80. Carver Sonic Holography Schematic?
81. LM1036 vs TDA1524 vs Other
82. Cello Master Supply Parts Question
83. Need a Baxandall 2way tonecontroll
84. looking help to choice a preamp to build.
85. Need volume control on active filter
86. Seems like nobody is modding the Outlaw 990... true? why?
87. Balanced line driver (DRV134) and noise
88. Tube pre-amp for a vehicle?
89. Can Someone help (Studiomaster mod)
90. Hum with B&K MC-101 and Spectral MCR cartridge
91. "...the best preamplifier ever made" says Mr. David Price, Hi-Fi- World
92. The 2 Channel Audio Preamplifier - schematic
93. Counterpoint SA-1000 buzzing problem
94. Lightspeed Attenuator Sam Tellig Stereophile review
95. AKAI PR-04A schematic
96. Crossover PCBs?
97. Which language for control software for pre
98. B & O Penta Crossover Differences - experts required
99. JFET mu follower phono or mic pre
100. What is the best transformer type for TVC?
101. impedance bridging problems
102. Conrad Johnson PV-1 schematics
103. 80 Watt class-b amp 'L6' Ver 5.0
104. Adcom GFP-565 IC Part Numbers???
105. "The Evil Sandman" Preamp
106. NEUMANN 3-band equalizer
107. Court Acoustics GE60 EQ wiring question
108. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
109. Bypassing a 100uF output electroytic - which value?
110. Preamp Noise
111. Class AA Opamp Schematic
112. 3-way active XO ... can amp input coupling caps be tailored for the frequency band?
113. sound effects(echo,bass,repeat,trible)
114. Aux send Circuit
115. CD-4 (Quadro) LP-decoder/RIAA
116. [PROJECT] 4 way crossover with signal detect
117. Nad S100 pre-amp woes
118. 50watt class-b amp mx50v6
119. JLH Liniac Revisited
120. Balanced mixer output?
121. Digital XO vs Op-amp XO, which would be best to use in active speakers?
122. DC powered active Xover w/ balanced outputs?
123. Smartkit Preamp+psu
124. DCX2496 into Quest 3004
125. First ever DIYish Preamp/Remote Volume etc...
126. NE5534AH pin out requested
127. Crossover help
128. Changing the std. opamp of active x-over
129. Ca 640p
130. Marchand Crossover Build Help
131. Splitting Line Level Signal
132. Multiple inputs for single output
133. A-weighting
134. Reckhorn F-1 and others; suggestions.
135. Analog audio mixer Inkel pro mx-1200
136. Sugden T48 tuner help
137. 6ch. volume control + attenuator for DCX2496 on the cheap
138. Star ground goes extreme
139. High quality preamp
140. Behringer DCX - need to do something to it
141. Input Question
142. Need Help From The Brainiacs :)
143. Counterpoint SA5 Preamp Problem
144. TUBEpre and Lightspeed LDR attenuator
145. A treble boost line amp
146. newbe need help with project
147. Anyone built the phono pre from LM4562/LME49720 datasheet?
148. pre amplifier build project
149. Guitar - iPod - Heaqdphone amp
150. samson s-3 way xover ?Anyone used?
151. Need to make 3 line outs from 1
152. Arduino based Input Selector for preamp
153. Another Wrench In the Works... Inductive RIAA
154. DIY Mobile Line Output Converter
155. Trouble with roland ac-60!
156. active vs passive time delay
157. Dead Left Channel on my Kenwood CI Pre-amp
158. Phono stage with NJM2068DD or TL071/072
159. Trimmer pots for onboard guitar preamp tone controls?
160. Passive Bandpass Filter
161. Balanced "passive" crossover
162. MAX5486- digi pot help!
163. gain stages in dynacord mixer
164. DRV134 pcb
165. quick and dirty Mono Sum circuit
166. Anybody interested in checking my PLLXO?
167. Yet another Volume controlers and source selections
168. Volume control
169. low gain 12ax7 schematic
170. Marantz HDAM Preamp DIY Kit on Ebay
171. "Crazy" power for preamp
172. ImPASSe -- transformer transplant
173. Phono to Aux Conversion
174. Easiest and fastest way to measure a crossover's transfer function?
175. Help needed making an RCA Y cable
176. Anyone heard a Leak 70 ss amp ?
177. John Curl's Blowtorch preamplifier part II
178. Meaning of an output's "load impedance"?
179. Remove mid range boost EQ circuit?
180. Oscilloscope BK precision 1477
181. Help whit Ebay/diy zone regulator
182. Stereoscope Leader
183. HELP channel select on guitar amp
184. Looking for service manual of mixer Aeq BC-2500
185. DAC datasheet
186. TL072 or NE5532 (or TL074) Which is best?
187. Ready made graphs that can import data
188. Rotel + BHC Aerovox 10000uF 63V... worthwhile change?
189. ultra-low distortion audio oscillator
190. Home made audio multiplexer (switch) using 4051 or 4052? (74HC...)???
191. Cable lifts
192. Question on passive preamplifier - transformer section.
193. My very first PCB layout - INA217-based mic preamp was the victim
194. Anyone using microphone cable in making their phono cable?
195. About replacing the NJM-4559 by LM4562 in this circuit
196. How to have a 48v+ on McCurdy preamp
197. Repairing Class A/AB amp with Blown Fuse
198. Accuphase C-27
199. Dbx 146221 Ic
200. Interconnects question.
201. switch noise
202. Which Op-Amp? (Afraid to ask really...)
203. Few questions about Linkwitz' mic amp circuit
204. Rotel RC-850 Pre Amp + Rotel RB-870BX
205. active filter 'without' opamps
206. newbie non solder mods?
207. Need suggestion for tube MC pre-pre
208. Schematic needed for Pioneer PL880
209. obbligato's with vitamin q as bypass
210. My firtst tube amp
211. Where to find RF remote stepped attenuator?
212. Crashing Sound
213. Exposure 2010 phono board OPamp?
214. rc4558p replacements?
215. help with passive line level crossover PLLXO for 33K impedance amps
216. Jensen JT-11P-1 Line Input Transformer
217. DIY phono to replace roksan phono stage
218. Poor Serbian Man Optical Volume Control
219. line level high pass filter
220. Mechanic hum
221. Filters - adjustable gain
222. Power transformer design paper
223. How to build a simple balanced mono line mixer
224. Phono Stage...
225. Importance of quality resistors ?????
226. Low-V simple phono stage + tube buffer
227. output standard?
228. Suggestions on a VCA and amp
229. Mains toroid as MC step up?
230. Juicy Music Tercel
231. IC wiring (ignoring the materials used and hopefully too long a thread)
232. 2 sources into 1 Stereo
233. tube box I service manual
234. DIY tube phono preamp ?
235. where do I begin to build an eq?
236. how to? simple wow/flutter measurement
237. Electrolityc Capacitors Footprints
238. Choke, filter for white noise
239. What type cable to use for double shielded driven guard?
240. HQ Balanced Phono Preamplifier for MC Cartridges using OPA2604
241. Linear voltage regulator: how to make good use of "sense" and "ground sense"?
242. High frequency high voltage oscillator - help!
243. Re-wiring to balanced (tonearm)
244. Stepped Attenuator giving unexpected behavior
245. Convert RCA box to XLR (phono)
246. Simple phono stage (MC)
247. simulating parallel netfilter
248. AGC in FM tuners ?
249. Balanced XLR source RIAA
250. new phono stage or old preamp with phono?