QEX 1220 12" small enclosure subwoofer

 QEX-1220 Subwoofer Technical Data
Dimensions Specifications
Diameter: Sensitivity:
Power Handling:
Power Handling:
Frequency Response:
Nominal Impedance:
Voice Coil Diameter:
Peak Xmax:
Magnet Weight:
Surround Frame
Cone
12” (300mm)
87.6 dB
500 WRMS
1000 WRMS Peak
10 ~ 400 Hz
2.3 Ohms
2.66” (66mm)
20mm
140oz stacked
Rubber
Cast Aluminum
Fiberglass Cloth
Mounting depth 6.22” (158mm) Cutout diameter 11.0” (280mm) Outer diameter 12.28” (312mm) Thiele-Small Parameters
Free Air Resonance:
Voice Coil DC Resistance:
Voice Coil Inductance @ 1 kHz:
Mechanical Q (Qms):
Electrical Q (Qes):
Total Q (Qts):
Compliance Volume (Vas):
Moving mass, Diaphragm:
Motor Force Factor:
31.45 Hz
2.3 ohms
3 mH
4.413
0.353
0.327
42.26L; 1.491ft3
205 Gr
16.34 Tm
Installation Sealed Enclosure Sealed Enclosure responses for selected volumes in cubic feet (cft.): Black=0.4 cft., red=0.3 cft., blue=0.2 cft.. Ported E nclosure P
P
O
O
R
R
T
T
L
D
PORTED
PORTED
Ported Enclosure responses for selected volumes in cubic feet (cft.): Black=1.5cft. Red=1.0cft. G reen=0.75cft. Blue=0.5cft. All ports are 3” dia. Tuned frequency and port length are as follows: Black = 30Hz and 11.6” long. Red = 35Hz and 13” long. Green = 40Hz a nd 13.4” long. Blue = 45Hz and 16.3” long. Ported Box responses for selected cubic feet (cft.) volumes:
Black=3.0cft. Red=2.0cft. Green=1.5cft. Blue=1.0cft. All ports are 2” dia. Tuned frequency and port length are as
follows:
Black = 20Hz and 5.45” long. Red = 25Hz and 5.18” long.
long.
Green = 30Hz and 4.68” long. Blue = 35Hz and 5.31”
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