B&C's 8FG51 8" woofer features a 2" copper voice coil on a fiberglass former, die cast frame, ceramic ferrite magnet, and a 250 watts RMS power handling rating. A copper ring in the 8FG51's magnetic circuit reduces distortion and extends high frequency response up to 4 kHz. The 8FG51 is an ideal compact pro woofer choice when used singly or in multiples.