by Jeff Harris

Your kid borrows the car, blasts too many techno tracks, and blows out the subwoofer. It used to be that you´d have two choices: Buy a new one (woofer, not kid) or put up with a hoarse bass line. But when a subwoofer pops, it´s usually only the voice coil-the part that drives the cone-that´s burned out; the rest of the assembly is just fine. Boston Acoustics´s SPG555 subwoofer is the first with a replaceable voice coil that you can install yourself. Simply undo six screws around the coil´s cap, swap the fried coil for a new one, and get back to booming. The sub is driven by powerful, hockey-puck-size neodymium magnets, making it half the size and weight of similar units using ferrite magnets, so you won´t have to choose between trunk space and heavy-hitting bass.

**Boston Acoustics SPG555

Weight: 26 lbs.

Size: 11.9 x 14.3 x
8.3 in.

Frequency: 20 to 350 Hz

Power: 1,000 watts

Price: $700;
$70 for a new voice coil

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