SDA not working in left speaker anymore

Hi Everyone,

Have a question for the collective wisdom of the group - I noticed today that the SDA driver and tweeter in my left speaker is no longer working. It's been working so I checked the cable connections and everything is secure and correct. Haven't moved the speakers and they haven't fallen or anything. Has anyone encountered this and if "yes" what did you do to fix it? I have a pair of the original SDA'2s:

They look like these:

Thank you all for your help, I really appreciate it!


  • Tony MTony M Posts: 6,519
    Can you pull the interconnecting cable out and check it for continuity?
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • westmassguywestmassguy Posts: 6,171
    edited August 11
    Tony M wrote: »
    Can you pull the interconnecting cable out and check it for continuity?

    On the 1st, 2nd, and 3rd generation SDAs, the plus + signal from the opposite speaker is sent over the Interconnect Cable, so both conductors carry signal. If the cable checks out, you'll have to pull the PR and have a look inside for anything amiss.
    Home Theater/2 Channel:
    Front: SDA-2ATL
    Center: Custom Built
    Surrounds & Rears: Custom Built
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
    Cables: Speaker: Furez 10/2 with GLS Locking Banana Plugs
    Interconnect: Furez 10/2 with SpeakONs
    ICs: Custom Furez by Douglas Connections
    Bose 901 Series II Continentals Restored, Re-Built Equalizer with Elna Silmic IIs, Sonicaps, and Silver Mica Caps
    Carver CT-3 Pre, Carver C-500
    Exclusive Distributor of Gimpod's Custom SDA Circuit Boards

    "And keep her under 70, would you, huh? Betty likes a slow ride"
  • Thank you Tony, I really appreciate it! The great news is that I found the problem - I was running my receiver's signal through an old DBX route selector and ADC EQ. Both of them need their buttons cleaned. When I removed them everything was working again and I have my big soundstage back.
  • ClipdatClipdat Posts: 4,965
    Agreed. Less is more. I'm all for getting unnecessary things out of the signal path.
  • Tony MTony M Posts: 6,519
    Or a can of De-Oxit should be ordered.
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • Did that to, cleaned up the EQ but the DBX box still needs some work as now there's no signal.
  • Found out that my interconnecting cable has a short in it at the connector. When I pull it up the SDA kicks in and when I allow it to lay on the floor it goes out in my left channel. Shouldn't be to hard to reconnect the connector. Has anyone removed and re-soldered their interconnect cable?
  • pitdogg2pitdogg2 Posts: 11,475
    Connector on the speaker or cable itself? The blade/blade connector on the speaker can get wonkie. I had to get inside mine and squeeze the metal together for a tighter grip on the cable. If it's the cable then good luck. I'd build a new one and go with a neutrik connector on the cabinet as well.
    ( sorry man my mind is mush at the moment spelling could be off)
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!