Question about Tweeter on SDA2

BonnyMBonnyM Posts: 6
edited November 21 in Vintage Speakers
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Hello,
My first question in this forum (just joined).
I recently bought a pair of SDA2s.
One tweeter (SL1000) does not work. Guy selling did not disclose obviously:(
I have 2 extra SL1000s. Tried them too. None worked.
Tried swapping fuses on back too. What could be wrong? Will Appreciate help.

Answers

  • BonnyMBonnyM Posts: 6
    edited November 21
    Picture attached.
  • GardenstaterGardenstater Posts: 1,473
    edited November 21
    I'd dig out the DVOM and start tracing the circuitry, continuities and resistances, using the schematic as a reference and do the resistance checks in the SDA Manual.

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    George / NJ

    Polk 7B main speakers, most mods comp. (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
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  • pitdogg2pitdogg2 Posts: 17,518
    Unless the interconnect cable is used 1 tweeter and 1 driver(dimensional) will not work.
  • BonnyMBonnyM Posts: 6
    @pitdogg2 Thank you. The cable is connected. Both tweeters on RH channel are working.
  • BonnyMBonnyM Posts: 6
    @Gardenstater Thanks a lot. I have never done such checks and repair....I could try I guess. Might be too much for me to handle ;) ๐Ÿ˜
  • GardenstaterGardenstater Posts: 1,473
    edited November 21
    It's not hard. Maybe you can get a friend with a little electronics experience to help out but if not we could walk you through it. First step get any old cheap meter and practice checking continuity and resistance with it on things like a light bulb or a paper clip.

    Even without a meter you could try swapping that RDO-194 (?), or lets just say the tweeter on the right with the SL-1000 in the problem speaker and see if the problem persists at the same location or if it follows the driver.
    Post edited by Gardenstater on
    George / NJ

    Polk 7B main speakers, most mods comp. (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • F1nutF1nut Posts: 45,207
    Be thankful, SL1000 tweeters are horrible.
    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

  • tonyp063tonyp063 Posts: 844
    I may not be remembering correctly, but isn't disconnecting that tweeter on that version SDA a recommendation in some threads here?
  • BonnyMBonnyM Posts: 6
    @Gardenstater Thank you Thank you. I will try next week :)
  • xschopxschop Posts: 1,838
    I may not be remembering correctly, but isn't disconnecting that tweeter on that version SDA a recommendation in some threads here?

    I believe I've read that multiple times here also.
  • BonnyMBonnyM Posts: 6
    I think, based on feedback, Iโ€™ll leave this tweeter non-operational. I removed the fuses for 2 SDA tweeters. Much better (was muddled before).
    Appreciate responses.
    I will now try swapping the one non-operational speaker with working one to see if issue follows.....Will reach back with any questions ๐Ÿ™‚
    ๐Ÿ™๐Ÿ™
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