PDA

View Full Version : Amps/Cabs Tech Corner: Amplifier, Cab & Speakers Tech Discussions


Pages : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 [50] 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65

  1. Can you ID this speaker
  2. Worth re-coning?
  3. Cabinet Wiring: 8-ohms? 16-ohms? Why does it matter?
  4. Rattley 5Y3's
  5. Great Fender Amp Tech in St Louis Area?
  6. Just Picked Up a Bassman 135
  7. My Amp Hums...
  8. Novice considering building a 5G15 reverb
  9. Not sure where to install my 5751 preamp tube in my concert II
  10. 9th Generation Chinese 12ax7
  11. Blackface vs silverface transformers
  12. Separate Rectifier Filament Transformer Question
  13. 2 x Matched Pair & Matched Quad.
  14. Effects Loop used as a AUX in?
  15. Pair of 5881wxt with one shorter-problem?
  16. Looking for info on Vintage Ampeg Radson Magnavox
  17. Will shielding a reverb tank remove the hum?
  18. Need to bring down my headroom/wattage... Tube recommendations?
  19. Why are some power tubes blackened???
  20. Can I check a power tube striength with a digital volt meter?
  21. Voicing Advice
  22. 1965 Supro Thunderbird resistor question
  23. Any problems running two separate chassis in a single 2x12 cabinet?
  24. PRRI Volume taper issue
  25. Fender Blues Deluxe tubes
  26. Fender PT Code
  27. '67 Drip-edge Super Reverb help
  28. Where to buy blank chassis for JCM build
  29. Are Kentucky made GE's really Ken Rad's?
  30. How do you remove the snubber caps?
  31. negative feedback resistor on plexi. 47k to 100k Will I notice a difference?
  32. Loose 6v6
  33. '69 drip-edge Bassman mod help!
  34. Field coil speakers
  35. Bassman 100 head - is the "bass" channel good for anything or should I mod it?
  36. What happened to my Sozo order? (resolved)
  37. JJ Electrolytics - Noisey?
  38. Canadian CSA Marshalls: Are all the fuses necessary?
  39. Princeton Reverb II Problem?
  40. Bassman AA864 restoration questions and pics
  41. these filter caps OK for my amp?
  42. BFDR Volume Loss
  43. Need help with Princeton Reverb
  44. Schematic for a Stereo splitter to run 2 amps
  45. Help With Tube Identification
  46. At what point do you need to worry about cathode stripping using a variac
  47. New power supply for my 6G3 Brown Deluxe
  48. SFDR bad output transformer ??
  49. Tube questions
  50. How do power conditioners work?
  51. new project - silverface twin rehab
  52. Help with changing pots in Bad Cat Cub
  53. Marshall woes
  54. 5751 tube in V1 or V2 for a dual channel amp.
  55. Blues PR246 volume control
  56. JCM 800 - how to access bottom of PCB?
  57. So My Bassman 135 Arrived And....
  58. speaker polarity
  59. What do the different preamp tubes in an Ampeg VT40 do?
  60. what cable to use for connecting Marshall head with cab?
  61. Discharging the caps on a peavey classic 30
  62. Jumper cable
  63. Output tranny with 16 ohm tap for 5e3
  64. Tweed Pro 5B5 Layout
  65. Who can mod my Danelectro Special?
  66. Question about using a Zener + Copper Cap to lower B+/plate voltage
  67. '62 Blonde Bandmaster transformer
  68. NOS EL84 ID help
  69. microphonic in v1, not in v2??
  70. Custom Faceplates and Screening
  71. Traynor YRM-1 Reverb Master - help!
  72. Hammond organ transformer specs?
  73. converting extension speaker out to 8 ohm tap
  74. Mullard 12AX7 shortplate overrated?
  75. Helpful Household (wire) Hints
  76. can a Weber 15 watt speaker handle peaks from a 15 watt amp?
  77. Super Modded VTM 60
  78. ATA case for Ceriatone overtone special?
  79. Help wiring a cab
  80. Fender Champ Rebuild Help
  81. DC to AC Inverter
  82. Early 60's Vibro Champ
  83. Webcor headache
  84. D-clone Filter caps...to replace or not?
  85. Amp break in?
  86. recommend me an amp kit to build
  87. How do I connect the reverb tank on a Deluxe reverb reissue???
  88. Want your opinion - should I change my tubes
  89. New speaker for BF 66 Deluxe Reverb
  90. Attenuator for my Mustang III?
  91. Plate Voltage Question
  92. Stereo Bandmaster Build - now w/ clips and pics from first gig
  93. Another Helpful Household Hint
  94. Is this too much tube for a UL Twin?
  95. what/where to get pot for vintage fender amp
  96. power tube failure
  97. So whats the concensous on a PPIMV in 74 JMP?
  98. EC Twinolux PI & tremolo question
  99. taming reverb (on a Pro Reverb)
  100. Vibrolux PT failure?
  101. 60s Fenders - Midwest Coil and Transformer
  102. Orange AD30 Issues
  103. Wrong solder/flux = printed circuit disaster
  104. RedPlate 3-channel Question
  105. My amp is killing pickups. Need help
  106. 76 JMP pre-amp tube placement/location
  107. i'm in real panic need help!! made a really bad mistake!!
  108. Interesting results with ABY, what do you think causes it?
  109. Tube Bass Pre-amp Build - now with sound clip
  110. Concentric shaft stacked 1MA pots
  111. Negative feedback question...
  112. Bias Question
  113. Anyone had this problem?
  114. Fair price for socket cleaning/re-tensioning?
  115. Right angle plug that is over sized
  116. UPS destroyed my amp!!! Any advice on fixing this?
  117. Pops and splitting noises (even with everything turned down)
  118. Beginner amp kit
  119. Silverface Twin problems
  120. Arguments for and against changing filtering on a SFDR to BF specs?
  121. 1974 SFDR reverb squeal.
  122. Morgan Dual 20 Tube Switch
  123. thoughts on a 6l6 tube swap on bogner alchemist
  124. Tweed Champ Spring Reverb
  125. Vintage Deluxe Reverb - Tone Control malfunction
  126. Need schematic for Sunn Stage Lead
  127. tube date codes - "lettered"
  128. Motorboating
  129. 5v4 Tubes
  130. fender vibrato fix?
  131. pull pot search
  132. Squealing.
  133. Fender electrolytics question
  134. can i use patch cable for a guitar?
  135. How to get rid of "crispy" tone in a Champ.
  136. Painting old amp transformers...ok or not???
  137. Deoxit question
  138. Help me ID these tubes
  139. Frustrated with my Deluxe Reverb
  140. Tube Identification Help Requested--Is this really a Sylvania?
  141. Ghia noise
  142. A question for the tube gurus
  143. Fixing LED on Princeton RI
  144. Tone Stack Math?
  145. Tips for soldering tips
  146. Help with Quick Troubleshoot on Dead Reverb Tank
  147. Old amps and ToneBones tube adaptors question
  148. Tube Layout - Soldano Lucky 13?
  149. Best replacement tone caps for vintage amp
  150. SOVTEK MIG50 upgrades/mods??
  151. Oddest Thing: NFB Issue
  152. Help with a Silvertone 1482 5E3 mod..
  153. High Main DC Voltage in Fender 6G12A
  154. Bias a 1987x
  155. PPI Master Volume or Power Scaling?
  156. serial anomaly: 1970 Fender Twin Reverb - Anyone have input on this?
  157. What does "tested strong" mean for a tube?
  158. Vintage JBLD130's, What's Your General Impression?
  159. Dirty Mains Line
  160. Settings for my Nolatone Junebug...
  161. ALL Carver, Phase Linear and Sunfire Manuals
  162. Output jack wiring question
  163. Suggestions for speakers for a Supro
  164. Reducing PT voltage by 50v help
  165. What modern tubes for 505 B+
  166. Gretsch 6161 Amp
  167. reducing low-lows in amp..cathode bypass or coupling cap?
  168. Any tips on repairing this?
  169. Inconsistent Tone
  170. So, I have a Silvertone 1485 on the bench...
  171. PT With Low Secondary
  172. Improving Bass Response on FDR
  173. Epiphone Valve Jr. Head Issues
  174. Red knod twin loud lowpitched hum
  175. Low bias voltage on Fender Hot Rod Deluxe
  176. Biasing in relation to a High/Low plate voltage switch?
  177. ..old stereo an easy conversion to guitar amp?
  178. Marshall speaker impedance?
  179. 135 Watt Silverface Twin bias question.
  180. Deluxe Reverb Input Level Question
  181. Thanks to All of You Amp Guys
  182. Vox AC15 no sound
  183. does the fender deluxe reverb have a baxandall eq ??
  184. Silver Face Princeton Reverb Input Jacks
  185. Zinky Problems
  186. Is it a good idea to use wire wounds in the power supply?
  187. Maz 18 No Sound
  188. Clarostat RV3 pot ID...lin or audio?
  189. Schematic Question (Favorite/Expression now with PICS!!)
  190. Help! Vibrolux blew a fuse!
  191. Moldy smelling Deluxe Reverb
  192. 6.5 ohms in 8 ohm speakers
  193. Help! THD hotplate to Super Reverb
  194. standing old twin on side blows screen resistor, wtf?
  195. Info for Blackface Vibrolux type amp
  196. Where NOT to mount a speaker jack
  197. Mesa Subway Rocket - Hot PT normal?
  198. Help with NOS Mullards ID please
  199. Replacing that "canister capacitor" on old vintage amps
  200. Hot rod deluxe reliability?
  201. Speaker Replacement for Fender Custom Vibrolux Reverb
  202. Compensating low voltage with higher bias
  203. Some results with transformers ( PICS PICS PICS )
  204. Tone Tubby Alnico red break in?
  205. Help with 6L6 Identification
  206. Interested in intro workshop on tube amps?...PNW
  207. Another Question about 6L6 in SFPR. What rectifier?
  208. Faceplate for vintage Gibson GA40
  209. Fender Super Champ XD schematic
  210. Suggestions for Crate Palomino Preamp Retube
  211. Recommend me a used Oscilloscope
  212. Tube Newb - Which Bias & Plate Probe Do You Use?
  213. 5F1 adding a choke
  214. silverface deluxe, slight whining noise ?
  215. Filament wiring on some funny tubes
  216. Octal preamp tubes?
  217. Problem with Mesa DC-3
  218. preamp tube ID please?
  219. Speaker Replacement In Cab
  220. 250ish watts from a weber 6o100...possible??
  221. 77' Jmp 50 watt Marshall HELP!
  222. Ohms
  223. 5f6-a Preamp Voltage Question
  224. How do you attach power cables?
  225. Fender Pro Jr. 20 watt OT?
  226. Is there an audible noise difference between using...
  227. Help with making an amp
  228. 8 ohm transformer into 4 ohm speakers?
  229. Fried my multimeter checking bias
  230. Preamp Tube ID
  231. Pro Junior with RCA 12AX7 tube issues
  232. Looking to go tube, could use some advice
  233. Tube Dampers not working
  234. metroamp jtm45 kit built by metroamp and metroamp jtm45 the difference is?
  235. Any Tube Experts in the House?.
  236. Using a cap as a crossover?
  237. FOUND THE FLUBBER UPPER!!~ Anyone Else Have a Similar Story?
  238. Bias...plate current question
  239. Pro Reverb Model number help
  240. Vintage Radio Help Needed Please
  241. OT Help
  242. taking readings from PT not plugged into amp
  243. Power transformer running a bit hot on a Champ 5e1 build
  244. 'Question about wire insulation.
  245. repair guys: your go-to 6V6 for general repair?
  246. Should I replace these Mallory caps?
  247. Speaker Wiring Question
  248. How Its Made For Us Tube Geeks
  249. Best brand of pots for Marshall build?
  250. Can My Speaker Magnet Press Directly Against the Amp Chassis?