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components

  1. A

    Known Issues in 70s/80s components

    Hi, Working on a SX-3500. Are there any known common issues with components? For example: Are transistors proven to become leaky/noisy? Do diodes/zeners drift? In an RT tape deck the transistors become noisy requiring testing or replacement. Thanks.
  2. M

    STK459/STK460 discrete components replacement

    Hello, My friend bringed me he's Panasonic amplituner with tape deck because it went off suddenly. I managed to replace all capacitors but one of channels is not working and i thought i will buy STK459 replacement, change it and that's gonna be it. Obviously this STK459 i bought is defective...
  3. potch

    Yamaha CR-640 Component Identification

    Hello, picked this unit up today and pulled the cover off to have a look. There are 2 square tubes protruding up from the board. One is loose and the 2nd one is not. They both seem to have corrosion around them. The loose one is circled in red in the attached picture. What is the function of...
  4. spctrlhrmny

    replacement parts and substitutions

    Just looking for some general "rules of thumb" ... quite a newbie here. How important is finding replacement components (such as capacitors) that are audio quality? Do you have recommended vendors for finding these? Do you have any preferred places to shop for components in general? (RIP...
  5. M

    Luxman MQ68c - Trim Potentiomenters

    I'm testing some old equipment that has been in the family for decades, and noticed that several of the trim potentiometers inside the Luxman MQ68c amplifier have broken apart. They were Helitrim model 91 pots - some 5k and some 10k. I've done a bit of research and it looks like these are no...
  6. drbranch

    Classifying Vintage Audio Equipment

    While reading through the latest Stereophile magazine (April 2019), I noted the Recommended Components 2019 sections and their ratings: A (sometimes A+) for best attainable sound for a component of its kind with "the least musical compromise," B for the next best thing, C for somewhat lower...
  7. NicholasD

    RANE ME-30 Graphic EQ's not passing AUDIO??? Why???

    So, I have these 2 nice RANE ME 30 Graphic Equalizers that we no longer used in a Theatre and neither of them are passing any Audio! Both pass audio only in Bypass mode. All LED's and buttons on the right side seem to work. One of them has an overload light permanently on. Otherwise their...
  8. Zingem

    How to take the first step towards the next level of sound reproduction?

    Hello to all you fellow Audio Buddies. Just popping up a question purely out of curiosity. I'm not suffering from a bout of Audiofila Nervosa or anything (well not more than usual anyway)... No i'm perfectly happy as things are. And neither did i won the lottery. But just for the sake of...
  9. L

    Mixing and matching components for three systems. Suggestions?

    Hi all, I'm putting together three systems out of the list of gear below. Any suggestions on what would match best and what to leave out? I'm currently running the Sansui, the Technics SL-1600 and the JBL L100s as my main system in my living room and I'm happy with that setup. Other two systems...
  10. P

    Technics Everything

    So I picked up a circa 1990 Technics-everything set- receiver, tuner, eq, cassette deck, cd changer, and turntable which all fit perfect in a nice high density fiberboard cabinet with fold-up top. Technics as well. Everything is in excellent to mint condition. The best part of the package is an...
  11. vintagecrank

    Joseph Chow Mods on Components

    I got a quote for modifications on my Sony ES Power Amp, Pre-Amp and Tuner, I was hoping to get some thoughts from some Sony Vintage collectors thought on whether these mods are really worth the extra expense. http://www.positive-feedback.com/Issue50/audio_horizons.htm Thanks, Vintagecrank
  12. 1973 Martin Speakers Micro Max components

    1973 Martin Speakers Micro Max components

    My personal pair with the Yellow Woofer Cloth Surrounds from 1973 show a code of 137 not only on the woofer but on the tweeter as well and I think Paul C an AK member will back me up that that is CTS/MOTOROLA...
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