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Installed a subwoofer with a my old JL Amp from 25 years ago. Modified the wedge box to a square box fits perfectly in trunk. It sounds better than the Burmester I heard from a loaner. Make sure to tap into front speakers unless you want your exhaust sound pumped to the subwoofer.
The bottom cover was rattling when I turn the volume up, I have a WeatherTech liner on top of it so that fixed it. I don't hear any rattles so far from driver seat even at almost full volume. su woofer is only 2 to 3 inches from the cover.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
