Glass fiber cone
Specially treated foam surround
Aluminum die cast basket
4.0″ 4 layer dual voice coil
Magnet weight:3*100 oz
RMS POWER Ratings
not yet available
Specs
fs: 37.5 hz
RE: 4 ohms+4 OHMs
QMS: 4.3661
QES 0.4498
VAS 1.56 cu.ft
SD: 0.0299 m2
spl 93db at 1w/1m