View Full Version : Instruments and Amps

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  1. seriously thinking about building this schematic. Can you find any issues with it?
  2. mid range "passive boost" circuit ?
  3. Power cap for fuzz box
  4. Heat build up in stainless steel vs. aluminum chassis
  5. Carlsbro GR2000
  6. Fender Tweed Deluxe Tube Choices
  7. Amp issue
  8. Fender Deluxe 5C3 Schematic question?
  9. Power transformer question
  10. Is there a practical way to make power filter capacitance variable?
  11. Bass guitar to Passive PA Sub?
  12. Ampeg SVT Preamp
  13. Anyone know of a clever idea for making your own eyelet setter?
  14. Can I add a Piezo tweeter to Peavey KB100?
  15. DS1807 for guitar pot, loud buzzing
  17. 1984 Peavey KB100 Amp -Only HUM
  18. Vox Pathfinder 10
  19. Potentiometer ID
  20. Amplifier Hum
  21. PSUD2 question
  22. vintage univox guitar amp/no sound whatsoever?
  23. cascade preamp stages CD4049
  24. studiomaster 1000X
  25. wurlitzer 200a electric piano hum
  26. New Member Question
  27. Need help identifying a phase inverter
  28. Long Tail Pair with Negative Feedback Problem
  29. 600 ohm to 150 T-Pad needed
  30. Organ amp conversion
  31. What could possibly be damaged by powering an amp with a bias cap lifted?
  32. Need help identifying C45 for a Fender Twin Reverb RI
  33. buzz in guitar amp. varies with volume. Anyone in Minnesota want to help?
  35. Multiple driver enclosure calculations
  36. Single Ended 6L6GC Load
  37. Selmer TnB 50w SV problem with Bass Channel
  38. DIY RA-200 suggestions?
  39. Marshall 3315 Solid state attempted repair questions
  40. Scratchy rattling resonance
  41. RI deluxe reverb PS ripple
  42. Guitar Amplifier Hum Varies with Volume Knob
  43. Boss CE-1 (original Chorus Ensamble) Repair/Mod
  44. help with MIDI for pic16f1789 ???
  45. A simple piezo snare drum
  47. Fender potentiometers nomenclature
  48. equipment penyata .
  49. add another output transformer
  50. 120W KT88 PPP bass amp progress + pics!
  53. Ampeg VT-22 dead OT?
  54. Please critique my first compressor design (for bass guitar)
  55. Marshall Valvestate 2000 not playing through speaker
  56. 12AU7 Cascode in tube amp?
  57. Sweet distortion
  58. Silvertone 1451 -Mystery adjustable cap
  59. 8 Ohm 2X12 Guitar Speaker cabinet - 2X4 Ohms in series or 2X16 Ohms in parallel?
  60. Guitar opamp Pre-amp input resistors
  61. Another avt150
  62. Princeton 112 Plus - Intermittent "Popping"
  63. Need Pinout Help, Silvertone Organ Amp
  64. Amp project for a newbie?
  65. Piezo Film Buffer and Amp Combo for Guitar Electronics
  66. Detuned Demystified
  67. layout: room between OT and EL34
  68. DC offset problem with TALMUS amplifier
  69. Vintage Amfiton-002 Hi-Fi amplifier for acoustic guitar
  70. help! Variable Frequency/Varible Q Boost/Cut tone circuit for tube bass amp.
  71. Ground loop hum and audio isolation trasformers
  73. PI introducing funny problems.
  74. Hum from guitar amp
  76. I designed an amp- would anyone like to build it for me?
  77. High Gain Tube Preamp Hiss
  78. Introductions/18 Watt Clone
  79. Hot Cathode Follower Resistor
  80. Made Guitar preamp, suggestions on schematic
  81. Need help ID'ing my Champ PT
  82. Fishman SA220 Schematic needed...
  83. Fender Frontman 212
  84. EL84 Tone Stack
  85. Hammond PR-40 Conversion to guitar amp
  86. Gibson GA-8T tremolo fault
  87. Acoustic guitar 2-channel preamplifier schematic
  88. rauland 3075 info needed
  89. Bias Switch w/ Heater Elevation
  90. The Alesis SR16 warning
  91. Guitar Speaker Cab/ PA Mixer Amp
  92. Ukulele pickup system of piezo SBT & ECM mic
  93. Fishman Rare Earth Blend replica
  94. 6L6GC Tube Orientation
  95. do I need a cathode follower?
  96. Hammond 307A Audio Transformer
  97. Passive Guitar Output Splitter WITHOUT Transformer
  98. Reverb gain on Fender Princeton 112+
  99. More power out of bass combo
  100. what happens to voltage when I add a good choke
  101. Variable feedback vs. input attenuation
  102. choosing new output tubes for mongrel amp
  103. Harsh 12AT7 PI. Brand or model?
  104. Help wanted. A very strange error.
  105. Guitar Tube Preamp
  106. Fixing a Peavey Transtube Amp
  107. Issues with model T (ish) Clone
  108. Boss BD-2 No Suund
  109. Gretsch6151 preamp fun project - Goes silent when tremolo tube is put in
  110. champ hop-up vs. new Angela super-single-ended build
  111. Peavey Triumph 60
  112. Hey Everybody (DIY Acoustic Amplifier)
  113. EF86 with EL84 pushpull
  114. Valve amp rebuild help
  115. OPT impedances
  116. crest fa2401 lose connection trace
  118. BJT/tube hybrid power amp with adjustable distortion
  119. Sag resistor
  121. Double amplification
  122. Blue label jensen stock in champs?
  123. questions on Svetlana/Tube Town EF86 mic stage
  124. Tremolo Circuit Design Beating
  125. old penncrest stereo amp to basic tube amp
  126. gibson L6s guitar tone control inductor
  127. carlsbro cobra 90 twin gone wrong
  128. Marshall Plexi Clone
  129. How to add volume to TDA8541 circuit?
  130. looking for Guitar amp
  131. Guitar piezo preamp
  132. effects powersupply
  133. Introduction and survey for gear junkies!
  134. Technical help with screen grid voltages
  135. tube amp no sound only buzz
  136. Critique my preamp design
  137. How is an acoustic amp different from a regular amp?
  138. el34 output transformer, 3 or 5 wire ~?
  139. Designing a Tube Line Driver / Pre-amp
  140. KT88 Tube Guitar Power Amp
  141. Guitar preamp with EQ and blend
  142. Building drum machine modules
  143. AB International 400 Power Amplifier Repair
  144. **** me, I bought the wrong box.
  145. Fender Frontman 212R - Extremely Loud Popping Noises..
  146. AC30 problem
  147. Damn, what chord is that?
  148. 20Segi tube amp
  149. Pedalboard Mounted Power Amp
  150. Homemade Leslie cabinet
  151. Tube ID needed
  152. Simple shematics for line level distorsion
  153. Fender pro reverb AA1069 nasty noise on normal channel
  154. Bias voltage problem
  155. Need help starting keyboard mod project
  156. Bright Cap, Yes or No or Maybe
  157. Gibson L6S guitar wiring
  158. Hex sustainer thingy
  159. Marshall B65 Schematic
  160. Golden Age Pre 73
  161. Piezo sensor - mounting woes
  162. Looking for high-fi condenser capsule
  163. I bought a box of old valves, some new in box and I want to build some projects
  164. 6550s
  165. Marshall VS 8080 IC1 Blowing.
  166. strange preamp
  167. Marshall 1960 Celestion G12t-75 ohm?
  168. 72 Twin reverb
  169. 6v6 Pushpull question
  170. Single-ended 6v6 diy; over-conducting
  171. Advice for first DIY project (MIDI sample playing instrument)
  172. Bass pre-amp DI output
  173. O/P Transformer DC Resistance Check
  174. HI-FI amplifier for bass guitar
  175. preamp for guitar
  176. Amp enclosure help
  177. Digning intro old organ
  178. SONIC MA-1 Tino Zottola
  179. Compressor design
  180. Possible intermittent Micalex tube socket?
  181. Mic as filter
  182. Fender rhodes peterson vibrato preamp
  183. Biasing for single supply to op amp
  184. Hammond Converion amps
  185. SAP 15
  186. The Right Tube For The Job
  187. Fishman Loudbox
  188. My bass amp is too loud!
  189. DIY AMI DD. Need some advice.
  190. Amplification breaks up after some time
  191. Polytone 215-700 Custom Bass Amp SCHEMATIC NEEDED please
  192. calculating signal current for power dissipation
  193. Getting a little help building an audio amplifier
  194. Screen Taps on Sunn Model T
  195. Mesa Boogie MkII
  196. Amp for electric violin / cello.
  197. Valve amp - placement of dual chokes
  198. voltage to sound
  199. stupidly simple LED dimming from DC heater supply?
  200. running a preamp tube in class B!
  201. Echo Amb Bias Confusion
  202. Capacitor ID
  203. Modified Alembic F2-B
  204. Tonemaster 214 Clone harsh increasing buzzing sound- no signal
  205. Hammond Type G Amp
  206. Improving a Marshall MG30DFX
  207. 6J51P mic amp - comments
  208. Attenuation pedal
  209. What all is included in the DC load current a transformer sees?
  210. DIY 25v power supply
  211. Ampeg SVT CL fault
  212. DIY Trace Elliot V8 w/ 8 KT120
  213. RCA Loudspeaker 106 and what is it?
  214. adding series resistance to transformer primary
  215. Guitar Preamplifier with ECC85.
  216. Wiring guitars: which features are important
  217. single-coil / humbucker hybrid wiring
  218. SE 6550 Guitar amp
  219. Humbucker question
  220. Bias vary tremelo help needed
  221. suzuki omnichord om-27 issue
  222. Fender reverb circuit diagnostics/repair
  223. Multiple Amp Stacks for live event
  224. Elgen Bass amp fault diagnosis
  225. Ibanez TB100h information?
  226. Fortin NATAS tubes?
  227. Tube Arcing?
  228. signal processing question
  229. Garnet stencil (Granada) with no AC isolation transformer
  230. LM3886 By General Guitar Gadget
  231. 100w Guitar Amp based on 2SC3280 (2SC5200)
  232. Hybrid "Marshall" Amp
  233. Mojo fix
  234. tube interstage impedance bridging for frequency response shaping
  235. Check This out!
  236. 120W PPP ULL Bass amp, first desgin, please shoot
  237. 6v6 fixed bias
  238. Bass amp; everybodies favorite 4x K88 driver tube
  239. Overdriving one channel with another
  240. VERY LOUD cracks/pops but no sound !?
  241. larger AC motors and shielding issues? Animated cabinet
  242. Mesa Boogie Road King - strange fault - help?
  243. KT120 Bass Amp
  244. rectifier tube recommendation for champ clone
  245. Modding a cheap practice amp (aka polishing turds)
  246. Distortion mod issue (help pls)
  247. Favorite Coupling caps in Preamp?
  248. Suzuki Omnichord
  249. Boss Super Shifter Help
  250. BASS AMP: KT88 PP (or PPP) 6SN7 CF vs CC driver

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