SDA/SRS crossover wiring

Just finished pulling out the crossovers out of my SDA/SRS speakers getting ready to send off for a rebuild and noticed that both speakers, the side of the crossover that has 6 pull off spade connectors which consist of a yellow,red,white,black, blue and a white wire with green tape attached, had the blue wire attached to the low frequency + side of the speaker binding post, and the black wire was going to the SDA connection. After I got the SDA/SRS (1985) crossover wiring diagram out, I see they have the blue wire going to the SDA connection and the black wire going to the + side of the low freq. binding post. I was hoping someone could help out with this and tell me which is the correct way. I bought these speakers used so who knows who has been into the crossovers. I can tell you they worked from the first time I hooked them up 7 months ago and sounded fine, although I questioned the SDA effect if it was working properly or not. these speakers have a blade blade interconnect and 13 screws on the front crossover plate and were manufactured in 1985. Thanks in advance for any help I receive.

Comments

  • PolkieMan
    PolkieMan Posts: 2,446
    If your in doubt about the wiring I would go with the factory diagram. Someone may have tried to cancel the SDA circuit because they just wanted standard stereo speakers
    POLK SDA 2.3 TLS BOUGHT NEW IN 1990, Gimpod/Sonic Caps/Mills RDO-198
    POLK CSI-A6 POLK MONITOR 70'S ONKYO TX NR-808 SONY CDP-333ES
    PIONEER PL-510A SONY BDP S5100
    POLK SDA 1C BOUGHT USED 2011,Gimpod/Sonic Caps/Mills RDO-194
    ONKYO HT RC-360 SONY BDP S590 TECHNICS SL BD-1
  • I thought that to, but could not understand why they just did not unhook the interconnect cable if that was the case.
  • F1nut
    F1nut Posts: 50,552
    The right speaker should have the blue wire connected to the top blade, green to bottom blade. The left has the blue to the bottom and green to the top. Both speakers should have the black wire going to the bottom + binding post and the white wire to the bottom - post.
    Political Correctness'.........defined

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  • Thanks for your help. I will correct that and be good to go.
  • stogie
    stogie Posts: 230
    Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
    Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
    Power Amp: Sunfire Architect's Choice Series II
    Preamp: Adcom GFP-750
    SACD/CD: Oppo BDP-95
    Tuner: Sansui TU-717
    TT: Technics SL-MA1
    Phono Pre: Emotiva XPS-1
    Music Server: Mac Mini w/JRiver - iPad w/JRemote
    DAC: Eastern Electric MiniMax Plus
    Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5
  • PolkieMan
    PolkieMan Posts: 2,446
    The reason would be to make full use of the dimensional drivers to play, sound, the same as the normal drivers, simply unhooking the cable would not do, or should not, do that.
    I thought that to, but could not understand why they just did not unhook the interconnect cable if that was the case.

    POLK SDA 2.3 TLS BOUGHT NEW IN 1990, Gimpod/Sonic Caps/Mills RDO-198
    POLK CSI-A6 POLK MONITOR 70'S ONKYO TX NR-808 SONY CDP-333ES
    PIONEER PL-510A SONY BDP S5100
    POLK SDA 1C BOUGHT USED 2011,Gimpod/Sonic Caps/Mills RDO-194
    ONKYO HT RC-360 SONY BDP S590 TECHNICS SL BD-1