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recap help

  1. C

    Vintage Speaker Baseline Measurements Before Re-cap/Modification/Repair?

    Short Version: I want to know what basic measurements I should take (before and after making changes) to get a decent picture of how a given speaker is performing beyond what my less educated ears tell me. Long Version: I have 4 sets of vintage speakers from the 1970s that really should get a...
    • CanadIanGeek
    • Thread
    • measurements modifications recap help speaker vintage 70's
    • Replies: 9
    • Forum: Speakers
  2. mcaddie7

    Harman Kardon A500 No Sound

    Hi all! Have a A500 that worked fine before recap, albeit one channel was much quieter than the other. I swapped all film caps (not my first receivers, have done this many times but am always learning) and the thing still worked. I replaced the two big electrolytic and still fine. Now onto...
    • mcaddie7
    • Thread
    • harmon kardon harmon kardon a500 recap help tubes
    • Replies: 143
    • Forum: Tube Audio
  3. B

    AU222 Single Channel Stereo, Smoking plus new Bass Potentiometer

    Hi all, I picked up an AU222 last week and have experienced a few issues. I'm okay with a soldering iron and have performed successful single capacitor replacements before now but I need some help with troubleshooting and guidance. 1. Single channel stereo output During testing only one of the...
  4. saman

    Vintage Pioneer Recap Assist

    Hi, I recently picked up a pair of vintage Pioneer S-X707V speakers. Looks like they were made in Japan in the 80s ‌(specs and a photo are attached). So I guess a recap is overdue? A photo of the crossover has been attached. First, can you tell, by looking at it, if the previous owner...
    • saman
    • Thread
    • pioneer recap help speakers vintage
    • Replies: 2
    • Forum: DIY
  5. M

    Lost oomph after recap Marantz 1060

    Hey, I've just had a Marantz 1060 recapped, obviously I expect a slight sound change when that's done, but I don't think I was ready for just how much bass I seem to have lost. An old hiss is now gone, and the mid and highs seem a lot clearer, but I've also lost the tight punch and low end...
    • Madmurphy13
    • Thread
    • bass low distortion marantz + 1060 recap recap help repair
    • Replies: 14
    • Forum: Solid State
  6. N

    Marantz SR 7000 recapping - 2 large caps questen

    Hey guys, Hopefully someone with electronics experience can weigh in. I am a student with an audio hobby, I managed to get some secondhand audio stuff (Mission MX4's, Magnat sub and Marantz SR 7000). I don't have any education relevant for board level repair so I'm basically free winging it...
    • NetNix
    • Thread
    • marantz recap and restoration recap help
    • Replies: 8
    • Forum: DIY
  7. Bradley J

    Cerwin Vega VS-150 Crossover Recap

    Just pulled the crossovers out of my Cerwin Vega VS-150 to recap and I noticed that all the caps are rated in MFD rather than the µF I’m used to. What would be the correct cap replacement value for the one pictured that reads 20 MFD 100V? I am also curious if I only need to replace the 3...
    • Bradley J
    • Thread
    • cerwin vega recap help schematics needed vs-150
    • Replies: 16
    • Forum: Speakers
  8. Frank Wild

    A little help from my friends? Kenwood KA-3500

    With loads of help from Hopjohn https://audiokarma.org/forums/index.php?threads/the-ka-3500-restoration.840144/ and Super Noob https://audiokarma.org/forums/index.php?threads/project-kenwood-ka-3500-nate-dogg.983234/ I’m restoring my dear old Kenwood KA-3500, not my first soldering project...
  9. berkemo

    Recap Motorola HS-677

    Hi All. New to this site/forum and first off thanks to everyone for posting great info throughout this site! This is a tremendous resource and thanks for your time. I just got an old Motorola Console (it ran quite well on a very brief test run) and I'm going to be that rookie guy who tries to...
    • berkemo
    • Thread
    • motorola console recap recap help
    • Replies: 11
    • Forum: Tube Audio
  10. docstu

    Onkyo Amp help

    Okay all. I have another oldie but goodie from my closet. I have an Onkyo 7055 amplifier that I took out of service maybe 25 years ago because one channel had become intermittent when it got good and warm. I'm by my own admission a Neanderthal with a soldering iron and a VOM. I'm guessing after...
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