NARROW CABINET SOLUTION WITH NEODYMIUM MAGNET Recommended for small to medium subwoofer enclosures, Fast alloy cone for narrow profile situations. Note: Low efficiency requires a very large power amp to run it. SSS. Dual-mirrored aluminium motor design for a rigid strength high dB cone. Extra large 3” aluminium voice coil converts large amounts of power. Depth only 70mm. Unique patented long through shallow design Vented cast aluminium chassis for optimum strength and low compression Dual rigid aluminium cone structure Non-conducting fiber glass coil former for minimum damping Shorting ring in motor system for reduced distortion 3 copper voice coil for improved power handling Long life insulated silver lead wires Powerful neodymium motor system