SDA-CRS Troubleshooting

AndyCRS
AndyCRS Posts: 2
edited March 2007 in Troubleshooting
Using test procedures supplied by Ken Swauger in 1996, results aren't good for the Left Channel, see attached file:

Questions:
1. Based on the results, can anyone tell me which components on which x-over need replacing?

2. Can you confirm that Blue and Black are used for all + connections? (Confirmed)

3. DCR Check points are?

4. Internal wiring schematic is a fax from 1996, impossible to read component specs, anything better available?
Post edited by AndyCRS on
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Comments

  • ben62670
    ben62670 Posts: 15,969
    edited March 2007
    pull out your drivers and check the ohms of each driver. They should be roughly 6.8 ohms.
    And welcome to club Polk
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • AndyCRS
    AndyCRS Posts: 2
    edited March 2007
    Thank you.
    For the Left Channel: Both L and R Tweeters are 7.2 Ohms.
    L Driver is 6.7, R driver is 7.1
    History of speakers: Upper x-over dislodged around 1991, rotated down over the lower x-over, turned parts into molten lead. Had the speaker repaired, but a 6502 was installed incorrectly. 1996 Ken S. supplied me with the correct 6503 and test procedures. Never got around to testing until now (Kids). I think that one of the x-overs is still faulty. I'm hoping that either someone (or Polk) can isolate down to the particular component, based on the specific factory tests that the speaker fails. Speakers are OK/good up to about 1/3rd volume, anything more and the safety circuit engages.
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  • schwarcw
    schwarcw Posts: 7,337
    edited March 2007
    Welcome to Club Polk!

    Sorry to hear about your problems:(

    Blue and black are always positive. If you have a multimeter, check the crossover for continuity. Check the resistors values, I don't know if your meter has capacitance, if it does, check those values. Take pictures of the crossovers if you can and post them. I don't know if that will help, but some of us have these speakers and can look and compare.

    Be patient, others will jump in. Good luck!
    Carl

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  • F1nut
    F1nut Posts: 50,557
    edited March 2007
    I'd recommend to do exactly what Carl has suggested and post the results here.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • hearingimpared
    hearingimpared Posts: 21,137
    edited March 2007
    Welcome to the Club Andy!!!

    What they said!. . . I just recently purchased a set of CRSs & CRS+s and am very interested in your findings.
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