This is a Volvo S40 sedan with a custom stereo installed by JML Audio in Chesterfield, MO. This vehicle features Zapco electronics and a single TREO Engineering subwoofer.

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The beginnings of a custom fiberglass enclosure (back)	The beginnings of a custom fiberglass enclosure (front)
After hours of work the enclosure is ready for test-fitting	The enclosure is now completed, carpeted, and loaded with a TREO SSi12 subwoofer
The completed cabinet installed (close-up)	The completed trunk install