Concrete Audio C38D4

C38D4
Diameter: 8 inch
Basket: die-cast aluminum
Cone: non-pressed paper, foam surround, Bolt Down Ring
Leads: woven tinsel on spiders Voice coil: 2.5 inch 4 layer hi-temp
Motor Structure: 100 Oz. Y35 grade FEA  Optimized
Impedance: dual 4 ohm
Power: 500W RMS

Cut out: 7 1/8 inches.
Mounting depth: 5 inches deep.
SPL: 78.98 1W/1m
R(e): 2.093 Ohms
Q(ts): 0.9924
Q(es): 1.156
Q(ms): 7.034
L(e): 0.2602 mh(10k)
M(ms): 112.1 grams
V(as): 0.119 cu ft

Enclosure Spec’s

0.75 CUBIC FEET NET
9 SQUARE INCH PORT
19.5 INCHES DEEP
MUST ADD PORT DISPLACEMENT TO REAR CHAMBER
SPEAKER DISPLACEMENT 0.04 CUBIC FEET
MUST ADD SPEAKER DISPLACEMENT TO REAR CHAMBER