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      05-02-2011, 06:09 PM   #8
kaigoss69
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Drives: '08 335i
Join Date: Jul 2008
Location: JAX

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They are 4 ohm but it does not matter. The OEM amp is too weak to drive aftermarket woofers. So if you're upgrading the underseats woofers, you must also install an external amp to drive them.
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