Interconnect Connectors

What a silly discussion title, lol.

When I bought my RT10 speaker pair brand new in the early '90s, I thought that they were the bomb and sounded better than so many other brands in the store. Now that I have a pair of SDA-1A speakers, they're at a whole new level of amazing. However, I don't have an interconnect cable and even if I did, I wouldn't be able to use it.

My problem is that the previous owner removed the connectors and replaced them with standard speaker jacks. Does this mean that I can connect the speakers together now with standard speaker wire? Red-to-red and black-to-black?

If I do this, do I need to worry about my dual-mono HK930 receiver? I'm not sure if it's common ground or not.

Any help or advice would be appreciated. Many thanks in advance.

Comments

  • pitdogg2pitdogg2 Posts: 9,828
    Yes that is correct in the hook up. Most receivers by nature are common ground. Amps a different story.
  • gabasagabasa Posts: 17
    Ok, thanks. If the previous owner wired something up backwards, could anything potentially be damaged?
  • verbverb Posts: 2,563
    Hello @gabasa You mean like this? Another hack in the FS Classified thread.
    q09hi3tatvgu.png
    2CH: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
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  • pitdogg2pitdogg2 Posts: 9,828
    gabasa wrote: »
    Ok, thanks. If the previous owner wired something up backwards, could anything potentially be damaged?

    Yes...
  • gabasagabasa Posts: 17
    edited March 2
    Yes, similar to the photo.
    For what it's worth, I didn't avoid them because of their less-than-pristine condition, just got with the hopes that they work and sound right. I'm going to measure the resistance on my speaker negative terminals right now and try it out......wish me luck.
  • verbverb Posts: 2,563
    gabasa wrote: »
    Yes, similar to the photo.
    For what it's worth, I didn't avoid them because of their less-than-pristine condition, just got with the hopes that they work and sound right. I'm going to measure the resistance on my speaker negative terminals right now and try it out......wish me luck.

    Good luck! Don't worry lot of help here on CP! You can easily restore the IC interface back to stock, lot's of Polkies here have spare parts.

    I believe your's probably had the blade/blade style IC. However some of the early 1A's used a 3-pin type. I would post some pic's of the XO's and let the CP community help identify which ones you need.

    II just checked ebay and they have the blade/blade cables. Heck I just gave one away recently, as I upgraded to the SpeakOn connectors.

    I think I donated my blade/blade sockets to @westmassguy as he performed my electronics upgrade.

    I'm sure you can get that type of socket for little or no cost. :smile:
    2CH: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
    Office: PC, Marantz AMP-1, Acoustic Technologies Classic Speakers, Polk PSWi225 wireless sub, MIT AVt2 cables, IFI Purifier2, AQ Cinnamon USB cable
  • pitdogg2pitdogg2 Posts: 9,828
    Those will be blade/blade. Only the very first SDA1 had the RTA type.
    Problem is lets say that the wire colors are black and white
    On one speaker the black will go to red speaker connect on the other the black goes to black speaker connect.

    And the white would go to the other speaker connection.

    If someone fouls that it could be seen as a direct short.
    Bad things happen.... You might let the magic smoke out
  • gabasagabasa Posts: 17
    Ok, I just measured the grounds on my speaker terminals and got 0.1 Ohms from one negative to the next, so I figure it's common ground.

    I hooked it up backwards on one of the speakers and the sound got narrower! I guess that the SDA drivers were playing in-phase with the opposite speaker as opposed to out-of-phase. So I reversed the interconnect connection on one speaker and everything widened immensely.

    I guess it's working! I also noticed that they brightened up quite a bit with the interconnect cable for some reason.
  • gudnoyezgudnoyez Posts: 6,159
    edited March 2
    Thanks for the photo I was struggling picturing your first post, the original owner did a conversion wonder why? Blade /Blade cables are easy to find.
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  • pitdogg2pitdogg2 Posts: 9,828
    gudnoyez wrote: »
    Thanks for the photo I was struggling picturing your first post, the original owner did a conversion wonder why? Blade /Blade cables are easy to find.

    True but sometimes the interconnect sockets get very loose and wonky.
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