Post by
versa2nr »
https://forums.nicoclub.com/versa2nr-u65681.html
Sun May 20, 2007 4:27 am
Yes you can hook up your own amp and sub to the exisiting Headunit.
You will need your amplifier wiring kit and something else called a line output converter. Those can usually be found on ebay for about10-12 dollars shpped. The line output converter uses signal from your rear channel (speakers) to give you the RCA connection to drive the subwoofer.
If you are looking to round your sound out inside the vehicle, the stock headunit would be more than enough signal to drive a subwoofer. But he is right, a aftermarket headunit will produce a punchier signal because of the amplification of the headunit itself.