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<blockquote data-quote="Full Tilt" data-source="post: 8040549" data-attributes="member: 640249">To sum up what&#039;s been said here:You will, first of all, need the proper voice coil configuration. A 1 Ohm DVC subwoofer wired in parallel is about the best example I can think of to wire a sub at half an ohm. The parallel wiring cuts the sub&#039;s impedance in half.However, you&#039;re not going to be able to run any subwoofer at half an ohm unless you&#039;ve got an amplifier capable of putting out stable power at that impedance. Your Hifonics BRZ, for example, isn&#039;t capable of running at .5, because it&#039;s too low of an impedance for the amplifier to keep it&#039;s power stable. Almost every amplifier you see online will have, somewhere, a note that indicates how low of an impedance it&#039;s stable at. Some are half an ohm, some 1 ohm, some two ohm, and some are even higher than that.Then, your car&#039;s electrical system will have to be in pretty good shape to keep up with your amp, given that it&#039;s capable of running at half an ohm. At this impedance, there&#039;s a lot of heat going through your amplifier, and it&#039;ll be pulling pretty hard on your car to generate power for the subwoofer. Stock wiring, on most vehicles, usually don&#039;t hold up too well running at half an ohm on power above 750 - 1,000w. In any case, I&#039;d suggest at least the Big 3, along with any other precautions you may think necessary such as an upgraded battery or HO alternator. It just depends on your car. I&#039;m running 900w @ 1 ohm in my Grand Prix with about 130A alternator and the big 3 upgrade, and it still taxes the car pretty hard sometimes. You can never be too safe when it comes to this part, because if your car&#039;s voltage is dropping too low, you&#039;ll be clipping your subwoofer. Systems are very prone to clipping at such a low impedance, so be careful.</blockquote>

[QUOTE="Full Tilt, post: 8040549, member: 640249"] To sum up what's been said here: You will, first of all, need the proper voice coil configuration. A 1 Ohm DVC subwoofer wired in parallel is about the best example I can think of to wire a sub at half an ohm. The parallel wiring cuts the sub's impedance in half. However, you're not going to be able to run any subwoofer at half an ohm unless you've got an amplifier capable of putting out stable power at that impedance. Your Hifonics BRZ, for example, isn't capable of running at .5, because it's too low of an impedance for the amplifier to keep it's power stable. Almost every amplifier you see online will have, somewhere, a note that indicates how low of an impedance it's stable at. Some are half an ohm, some 1 ohm, some two ohm, and some are even higher than that. Then, your car's electrical system will have to be in pretty good shape to keep up with your amp, given that it's capable of running at half an ohm. At this impedance, there's a lot of heat going through your amplifier, and it'll be pulling pretty hard on your car to generate power for the subwoofer. Stock wiring, on most vehicles, usually don't hold up too well running at half an ohm on power above 750 - 1,000w. In any case, I'd suggest at least the Big 3, along with any other precautions you may think necessary such as an upgraded battery or HO alternator. It just depends on your car. I'm running 900w @ 1 ohm in my Grand Prix with about 130A alternator and the big 3 upgrade, and it still taxes the car pretty hard sometimes. You can never be too safe when it comes to this part, because if your car's voltage is dropping too low, you'll be clipping your subwoofer. Systems are very prone to clipping at such a low impedance, so be careful. [/QUOTE]

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