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speaker protection

  1. dankik

    Need Help Marantz 2252b Relay Getting Hot

    Hi, I'm a new member in this forum. I have been reading all of your helpful responses for many years, but finally joined. I had a new Marantz 2230 when I was in college and sold it long ago. Recently I bought a used 2252b in working condition from Goodwill and recapped the electrolytic...
    • dankik
    • Thread
    • 2252b relay speaker protection transformer
    • Replies: 25
    • Forum: Marantz Audio
  2. Allison3

    H/K Citation 19 // Speaker Protection - what's best?

    My new-to-me Citation 19 amp has the characteristic turn-on/turn-off 'pop.' It's only mildly annoying, but I'd like to see if there's an easy-peasy way to avoid this (short of dropping $300 on the Eminence D-fend.)
  3. polypetalous

    Is it ever "just" the Relay? Troubleshoot STA-2000 help please...

    Well jeez, pretty bummed... Perhaps a lil help? My equipment had been serving me well during this "stay at home" time, until today. Realistic STA-2000, un-restored. Periodically over the last couple of years the "speaker protection relay" won't click/engage when powered on. Since I have been...
  4. D

    Sansui 5000X and Harman Kardon twin (430,730,930) speaker protection

    Hi guys, I am new here, but hope to find answers to some questions. I really like Sansui 5000X, 2000X and Harman Kardon twin receivers, but the information about these receivers is very different in terms of the speaker protection. My question is do these amps have speaker protection circuit...
    • dian83
    • Thread
    • harman kardon sansui 5000x speaker protection
    • Replies: 6
    • Forum: Solid State
  5. R

    Protection for irreplaceable tweeters

    Hi folks- Long time reader, first time poster here. I am looking for some experienced advice on a subject I know has a lot of history. I have read all I can find but still have a dilemma. I have a pair of ultra rare speakers (Panasonic SB-636) with absolutely irreplaceable, very unusual...
    • resoundpdx
    • Thread
    • speaker protection tweeter protection zener diode
    • Replies: 27
    • Forum: Speakers
  6. tngeorge

    Pioneer sx3900 speaker relays where to get?

    hi, relatively new here. I’ve read that others have experienced the same symptom as I am experiencing. My 3900 will cutout momentarily in the left channel for maybe 5-10 seconds, or it gets a bit staticky. It is within the unit as I have experienced it in phono, tuner, A and/or B, switched...
    • tngeorge
    • Thread
    • pioneer relays speaker protection sx3900
    • Replies: 4
    • Forum: Solid State
  7. gregmcm

    SX-980 Protection Circuit Issue

    Have read a lot of threads and the protection relay kicking in seems to be a common and sometime mysterious problem on a number of Pioneer units. Wondering if anyone has had a similar experience to mine (see below) and if so were they able to identify the source of the issue. Here is my story...
    • gregmcm
    • Thread
    • pioneer sx-980 protection relay speaker protection
    • Replies: 4
    • Forum: Pioneer Audio
  8. A

    Chinese speaker protection circuit kits

    Hi There are a range of low-cost speaker protection circuit boards and kits available from China. I recently bought/assembled the one in the photo attached. My initial impressions are reasonably positive, so I've started this thread to see if anyone has any comments about them and how they...
  9. c.coyle

    Testing speaker protection circuit

    I replaced the differential pair transistors in an amplifier and, when I tested offset (with no speakers connected, thank the stars), I got 38 volts at the speaker terminal on that channel. I went back and figured out that I had an open solder joint on one of the new trannys. That fixed the...
    • c.coyle
    • Thread
    • dc offset differential pair relay speaker protection
    • Replies: 1
    • Forum: Solid State
  10. fdeelros

    Accuphase P-300 Relay issue

    Hello everyone and happy Easter holiday. I wanted to pick your brains about an Accuphase P-300 that I recently acquired. The unit has two relays (one on each side of the amp close to the front). The relay on the left (behind the power switch) clicks like crazy when the amp is cold or when I...
    • fdeelros
    • Thread
    • accuphase recapping relay speaker protection
    • Replies: 5
    • Forum: DIY
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