View Full Version : Instruments and Amps

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  1. Marshall AVT20 repair and mods
  2. XLR input coupling cap replacement ?
  4. Which phase inverter for a deluxe
  5. Guitar Amp 12au6-Possible Gain Increase?
  6. balanced output on your (bass) guitar?
  7. Partridge transformers vs Hammond
  8. KMD XV100SD guitar amp
  9. Mystery SE output transformer impedence
  10. seriously thinking about building this schematic. Can you find any issues with it?
  11. mid range "passive boost" circuit ?
  12. Power cap for fuzz box
  13. Heat build up in stainless steel vs. aluminum chassis
  14. Carlsbro GR2000
  15. Fender Tweed Deluxe Tube Choices
  16. Amp issue
  17. Fender Deluxe 5C3 Schematic question?
  18. Power transformer question
  19. Is there a practical way to make power filter capacitance variable?
  20. Schematic for Behringer Eurolive B1500 Pro
  21. Bass guitar to Passive PA Sub?
  22. Ampeg SVT Preamp
  23. Anyone know of a clever idea for making your own eyelet setter?
  24. Can I add a Piezo tweeter to Peavey KB100?
  25. DS1807 for guitar pot, loud buzzing
  26. Behringer epa900 schematic
  28. 1984 Peavey KB100 Amp -Only HUM
  29. Vox Pathfinder 10
  30. Potentiometer ID
  31. Amplifier Hum
  32. PSUD2 question
  33. vintage univox guitar amp/no sound whatsoever?
  34. cascade preamp stages CD4049
  35. studiomaster 1000X
  36. Peavey pv 2000 outputs
  37. Issues with a solid state Marshall Guitar Amp
  38. wurlitzer 200a electric piano hum
  39. New Member Question
  40. Fixing my Behringer A 500 amplifier
  41. solid state organ amp conversion to guitar
  42. Vox AC50 output transformer rewind
  43. Need help identifying a phase inverter
  44. Long Tail Pair with Negative Feedback Problem
  45. 600 ohm to 150 T-Pad needed
  46. Organ amp conversion
  47. What could possibly be damaged by powering an amp with a bias cap lifted?
  48. Need help identifying C45 for a Fender Twin Reverb RI
  49. buzz in guitar amp. varies with volume. Anyone in Minnesota want to help?
  51. Multiple driver enclosure calculations
  52. Single Ended 6L6GC Load
  53. Selmer TnB 50w SV problem with Bass Channel
  54. DIY RA-200 suggestions?
  55. Marshall 3315 Solid state attempted repair questions
  56. Scratchy rattling resonance
  57. RI deluxe reverb PS ripple
  58. Guitar Amplifier Hum Varies with Volume Knob
  59. Boss CE-1 (original Chorus Ensamble) Repair/Mod
  60. Peavey 112 Max Bass - request for schematic
  61. help with MIDI for pic16f1789 ???
  62. A simple piezo snare drum
  64. Fender potentiometers nomenclature
  65. equipment penyata .
  66. add another output transformer
  67. 120W KT88 PPP bass amp progress + pics!
  70. Ampeg VT-22 dead OT?
  71. Please critique my first compressor design (for bass guitar)
  72. Marshall Valvestate 2000 not playing through speaker
  73. 12AU7 Cascode in tube amp?
  74. Sweet distortion
  75. Silvertone 1451 -Mystery adjustable cap
  76. 8 Ohm 2X12 Guitar Speaker cabinet - 2X4 Ohms in series or 2X16 Ohms in parallel?
  77. Guitar opamp Pre-amp input resistors
  78. Another avt150
  79. Princeton 112 Plus - Intermittent "Popping"
  80. Need Pinout Help, Silvertone Organ Amp
  81. Need Pinout Help, Silvertone Organ Amp
  82. Amp project for a newbie?
  83. Piezo Film Buffer and Amp Combo for Guitar Electronics
  84. Detuned Demystified
  85. layout: room between OT and EL34
  86. DC offset problem with TALMUS amplifier
  87. Vintage Amfiton-002 Hi-Fi amplifier for acoustic guitar
  88. help! Variable Frequency/Varible Q Boost/Cut tone circuit for tube bass amp.
  89. Ground loop hum and audio isolation trasformers
  91. PI introducing funny problems.
  92. Hum from guitar amp
  94. I designed an amp- would anyone like to build it for me?
  95. sunn 200s diagnosis?
  96. High Gain Tube Preamp Hiss
  97. Introductions/18 Watt Clone
  98. Hot Cathode Follower Resistor
  99. Made Guitar preamp, suggestions on schematic
  100. Need help ID'ing my Champ PT
  101. lafayette pa 622 -> Guitar amp conversion
  102. Fishman SA220 Schematic needed...
  103. Marshall 2195 1970's lead and bass head
  104. Fender Frontman 212
  105. EL84 Tone Stack
  106. Can I use SMPS to power bass guitar amp instead of HUGE transformer?
  107. Behringer EP2500 Bridge mode not working
  108. Hammond PR-40 Conversion to guitar amp
  109. Gibson GA-8T tremolo fault
  110. Acoustic guitar 2-channel preamplifier schematic
  111. rauland 3075 info needed
  112. Bias Switch w/ Heater Elevation
  113. The Alesis SR16 warning
  114. Guitar Speaker Cab/ PA Mixer Amp
  115. Ukulele pickup system of piezo SBT & ECM mic
  116. Fishman Rare Earth Blend replica
  117. 6L6GC Tube Orientation
  118. do I need a cathode follower?
  119. Hammond 307A Audio Transformer
  120. Passive Guitar Output Splitter WITHOUT Transformer
  121. Reverb gain on Fender Princeton 112+
  122. More power out of bass combo
  123. what happens to voltage when I add a good choke
  124. Variable feedback vs. input attenuation
  125. choosing new output tubes for mongrel amp
  126. Harsh 12AT7 PI. Brand or model?
  127. Marshall 9004 Switches...
  128. pre war gibson eh125 schematic question
  129. Help wanted. A very strange error.
  130. Guitar Tube Preamp
  131. Fixing a Peavey Transtube Amp
  132. Issues with model T (ish) Clone
  133. Boss BD-2 No Suund
  134. Silvertone 1485 - Output Transformer advice
  135. Gretsch6151 preamp fun project - Goes silent when tremolo tube is put in
  136. champ hop-up vs. new Angela super-single-ended build
  137. Peavey Triumph 60
  138. Hey Everybody (DIY Acoustic Amplifier)
  139. EF86 with EL84 pushpull
  140. Valve amp rebuild help
  141. Behringer ep1500 Crackling
  142. OPT impedances
  143. Marshall Valvestate VS-100R
  144. crest fa2401 lose connection trace
  146. BJT/tube hybrid power amp with adjustable distortion
  147. Sag resistor
  149. Double amplification
  150. Blue label jensen stock in champs?
  151. questions on Svetlana/Tube Town EF86 mic stage
  152. Tremolo Circuit Design Beating
  153. old penncrest stereo amp to basic tube amp
  154. gibson L6s guitar tone control inductor
  155. Request for guitar amplifier circuit
  156. carlsbro cobra 90 twin gone wrong
  157. Marshall Plexi Clone
  158. How to add volume to TDA8541 circuit?
  159. looking for Guitar amp
  160. Guitar piezo preamp
  161. effects powersupply
  162. Introduction and survey for gear junkies!
  163. Technical help with screen grid voltages
  164. tube amp no sound only buzz
  165. Critique my preamp design
  166. How is an acoustic amp different from a regular amp?
  167. el34 output transformer, 3 or 5 wire ~?
  168. Designing a Tube Line Driver / Pre-amp
  169. KT88 Tube Guitar Power Amp
  170. Guitar preamp with EQ and blend
  171. Building drum machine modules
  172. AB International 400 Power Amplifier Repair
  173. **** me, I bought the wrong box.
  174. Fender Frontman 212R - Extremely Loud Popping Noises..
  175. AC30 problem
  176. Crate Palomino V8 potentiometer replacement
  177. Damn, what chord is that?
  178. 20Segi tube amp
  179. Pedalboard Mounted Power Amp
  180. Homemade Leslie cabinet
  181. Tube ID needed
  182. Simple shematics for line level distorsion
  183. Fender pro reverb AA1069 nasty noise on normal channel
  184. Bias voltage problem
  185. Need help starting keyboard mod project
  186. Bright Cap, Yes or No or Maybe
  187. Gibson L6S guitar wiring
  188. Hex sustainer thingy
  189. Marshall B65 Schematic
  190. Golden Age Pre 73
  191. Piezo sensor - mounting woes
  192. Looking for high-fi condenser capsule
  193. I bought a box of old valves, some new in box and I want to build some projects
  194. 6550s
  195. Marshall VS 8080 IC1 Blowing.
  196. strange preamp
  197. Marshall 1960 Celestion G12t-75 ohm?
  198. 72 Twin reverb
  199. 6v6 Pushpull question
  200. Single-ended 6v6 diy; over-conducting
  201. Advice for first DIY project (MIDI sample playing instrument)
  202. Bass pre-amp DI output
  203. Fender Tweed Champ Kits/Parts
  204. O/P Transformer DC Resistance Check
  205. HI-FI amplifier for bass guitar
  206. HELP With VOX AC100CPH
  207. preamp for guitar
  208. Amp enclosure help
  209. Stuck on Circuit Guitar Preamp LED mirror
  210. Digning intro old organ
  211. SONIC MA-1 Tino Zottola
  212. Compressor design
  213. Possible intermittent Micalex tube socket?
  214. Mic as filter
  215. Fender rhodes peterson vibrato preamp
  216. Biasing for single supply to op amp
  217. Hammond Converion amps
  218. SAP 15
  219. The Right Tube For The Job
  220. Fishman Loudbox
  221. My bass amp is too loud!
  222. DIY AMI DD. Need some advice.
  223. Amplification breaks up after some time
  224. Polytone 215-700 Custom Bass Amp SCHEMATIC NEEDED please
  225. calculating signal current for power dissipation
  226. Getting a little help building an audio amplifier
  227. Screen Taps on Sunn Model T
  228. Mesa Boogie MkII
  229. Amp for electric violin / cello.
  230. Valve amp - placement of dual chokes
  231. voltage to sound
  232. stupidly simple LED dimming from DC heater supply?
  233. running a preamp tube in class B!
  234. Echo Amb Bias Confusion
  235. Capacitor ID
  236. Modified Alembic F2-B
  237. Tonemaster 214 Clone harsh increasing buzzing sound- no signal
  238. Hammond Type G Amp
  239. Improving a Marshall MG30DFX
  240. 6J51P mic amp - comments
  241. Attenuation pedal
  242. Acousto-electro guitar amp - speakers impedance
  243. What all is included in the DC load current a transformer sees?
  244. DIY 25v power supply
  245. Ampeg SVT CL fault
  246. First test of my AX84 HI-octane
  247. DIY Trace Elliot V8 w/ 8 KT120
  248. RCA Loudspeaker 106 and what is it?
  249. adding series resistance to transformer primary
  250. Guitar Preamplifier with ECC85.

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