Question about Alphasonik PSW815 Car Subwoofer

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I have 2 positives and 2 negatives on back of my alphasonik sub, do i connect amp to one side or both sides?

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Ronny Brite

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Hello gaz69,

Your PSW815 has 2 ohm dual voice coils allowing you to better match the impedance to your amp. Each voice coil is 2 ohms. If you wire them in parallel (both +'s together and both -'s together and then to the amp terminals), the sub presents a 1 ohm load which is too low for most amps. Wiring the voice coils in series (one + to the other - and the remaining + and - to the amp terminals) results in a 4 ohm load.

This link shows the wiring diagram for both options. If you know for sure that your amp is 1 ohm stable, use Wiring Option #1. If the amp is not 1 ohm stable, use Wiring Option #2.

Hope this helps.

Posted on Aug 09, 2009

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Hey gaz, you have purchased dual voice coil sub woofers. Each coil has it's own impedance, Usually 4 ohm, or 2 ohm (1 ohm in the case of some high end woofers, and 3, or 6 ohm in the case of some JL, and JBL woofers). How you wire up your coils depends on the amplifier you are using.
THe Alphasonik 800 series sub's are Dual 2 ohm woofers. so you can run one singe sub @ 4 ohm's or 1 ohm. If you have a pair you will be running @ 2 ohm's or 1/2 ohm. (not many amplifiers can handle 1/2 ohm)

Here is an in depth guide that will help you with the wiring configuration.
http://pinq.wordpress.com/2007/05/11/wiring-your-subs-dual-voice-coils/
2 things you MUST know before wiring.
The impedance of each coil.
The lowest stable impedance of the amplifier.
DO NOT WIRE YOUR SUBS LOWER THAN THE STABLE IMPEDANCE OF THE AMPLIFIER. GOING HIGHER IS OK, BUT NEVER LOWER.

Posted on Aug 09, 2009

  • Anonymous Aug 09, 2009

    NEVER just use one coil of a dual voice coil sub woofer! This WILL damage the driver!

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