It's no big secret. The E-MU XM7's sonic performance is this. The five-inch custom designed diaphragm woofer works with oversized magnet structure and shielding for tight bass response. Seek clarity and accuracy in the specially doped one-inch high efficiency silk dome tweeter.
Dimensions (H x W x D): Each Speaker: 232.0 x 174.0 x 298.0 mm (9.14" x 6.85" x 11.7")
Weight: Each: Approx 4.35kg (9.59lbs)
Drivers: Woofer: 5” (132 mm) special combination diaphragm with oversized magnetic structure and shielding, Tweeter: 1” (25 mm) silk dome tweeter