Quote:
Originally Posted by mech888
For the cars with the Hifi stereos can you upgrade the subs while using the head unit to power them or is it best to get a new amp?
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All depends on the woofer; for example the SWS-8 require external amplification to sound good, the SSMB8 will sound slightly better than stock with just the OEM amp power output.
But the general rule is to add a separate 2-channel amp to aftermarket woofers if you really want to notice a significant difference.