The  drivers used in the Speaker are: a 1" silk dome tweeter; a 4.5" aluminum-loaded polypropylene midwoofer with rubber surround; a white paper/wood pulp 8" woofer for the Speaker; a 3.5" pure aluminum, hard anodized, ceramic surface cone mid/woofer with rubber surround for the speaker and composite, flat diaphragm, rigid long fiber cones with foam and polypropylene elements and rubber surround for the 6" and 8" drivers of the subwoofers.  the Speaker benefits from custom drivers, crossovers and terminals

Specs:
Type-- 2-Way
Frequency Reponse 70 Hz - 22,000 Hz
Sensitivity  90 db
Impedance  6 ohms
Magnetically Shielded
Woofer Size-4.5"
Tweeter-- 1"
Dimentions  HWD- 15.75 x 4.25 x 6.69 inches
weight-- 10lbs