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(More customer reviews)I drive a Honda Civic and wanted to upgrade the factory audio system without blowing my budget. After replacing the factory 6" door and rear deck panel speakers with Kenwood co-axial speakers, the sound I heard still wasn't as good as I wanted. The Honda factory option "Bass Kit" wasn't working well and was actually making things worse. I knew I needed a powered sub-woofer for the trunk. With a Civic, you also have to consider the amount of available space.
I decided to make my own sub-woofer package with components from Amazon. I started with this Polk Audio AA3084-A MM840 8-inch subwoofer. This one has a single voice coil design, and I paired it with a Sony mono XM1S amplifier at 290W RMS. Like most sub-woofers, this Polk Audio unit requires a sealed enclosure for performance (and warranty) requirements. I chose a small box, of about 0.46 ft3 volume, covered in charcoal gray carpet. The whole sub package takes up a portion of the trunk, but still leaves room for the things I normally store there.
The bass emitted by this setup is deep and accurate. Since I'm still using the factory head unit, I had the installer use the rear speaker high-level inputs to drive the amp. Now I can finally hear the bass player and the drum kit when I play my favorite rock music. The hip-hop/rap music my son favors sounds great as well, and the amount of bass can be adjusted simply by using the audio tone controls on the head unit. It all helps to drown out the road noise the Civic lets inside. The only distortion I have noticed occurs on particularly loud songs (e.g. Daughtry) when the volume control is set above 95% max. This is probably due to the amp, or the fact that I'm using speaker level inputs, not the Polk Audio woofer. But, at those volumes, my ears are ringing anyway, so I usually don't go there.
I'm loving it!
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