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This is a discussion on Dual coil sub connection Q within the Interior Mods forums, part of the Tech & Modifying & General Repairs category; Hey, I've got an Alpine SWR-1023 sub to put in my car, and I want to run it at 2 ...

  1. 06-01-2011 09:06 PM #1
    GEARJAMR
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    Dual coil sub connection Q

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    Hey,

    I've got an Alpine SWR-1023 sub to put in my car, and I want to run it at 2 ohms (the amp is Alpine MRP-M500). It is a 2 ohm + 2 ohm sub.....do I HAVE to connect on both sets of terminals, or can I connect to one without jumpering to the other? The manual indicates only 4 ohm or 1 ohm (not supported) configurations.

    Pardon my ignorance, it's my first dual coil sub. Thanks.
    2011 Spark Silver WRX 5-door. No mods....yet.
    2000 Navy Blue Camaro Z28. Some bolt-ons, stereo.
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  2. 06-02-2011 09:25 AM #2
    Donkey
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    You defeat the purpose of using a dual voice coil sub if your only going to use 1 coil. I would just run the voice coils in the 4 ohm configuration.
    Last edited by Donkey; 06-02-2011 at 09:30 AM.
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  3. 06-02-2011 09:50 AM #3
    GEARJAMR
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    Yeah, that was my thought. My amp puts out 500W RMS in to 2 ohms and only 300W RMS in to 4 ohms, so there is a benefit to going 2 ohm. I'm working on exchanging the 1023D for a 1043D which I can run 2 ohm in parallel.
    2011 Spark Silver WRX 5-door. No mods....yet.
    2000 Navy Blue Camaro Z28. Some bolt-ons, stereo.
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  4. 06-02-2011 09:56 AM #4
    patrick4588
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    your amp isnt 1ohm stable?
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  5. 06-02-2011 10:29 AM #5
    GEARJAMR
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    Manual shows no specs for 1 ohm operation. Only 4 and 2.
    2011 Spark Silver WRX 5-door. No mods....yet.
    2000 Navy Blue Camaro Z28. Some bolt-ons, stereo.
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