non pressed paper cone

specially treated foam surround

black steel basket 

2.5″ 4 layer voice coil

dual 4 ohm impedance

magnet weight:50 oz

mounting depth: 178mm

spl 92db at 1w/1m

Specifications:

fs: 27.1 hz

RE: 4 ohms+4 OHMs

QMS: 3.4908

QES 0.4752

VAS 5.95 cu.ft

SD: 0.0804 m2