KAR Series
Subwoofers
KS 10D2
KS 10D4
KS 12D2
KS 12D4
Installation Manual
Specifications
Woofer Specifications
KS10D2 KS10D4 KS12D2 KS12D4
Impedance
2X2 ohm
4X4ohm
2X2 ohm
4X4 ohm
DC Resistance
Re
1 ohm
4 ohm
1.8 ohm
7.2 ohm
1 ohm
4 ohm
1.8 ohm
7.2 ohm
Free Air Resonance
Fs
32.1 29.5 27.1 28.2
Q Electrical Resistance
Qes
.771 .658 .45 .48 .902 .908 .565 .58
Q non Electrical Resistance
Qms
4.87 4.68 5.07 4.91 5.06 5.28 4.99 5.18
Total Q
Qts
.666 .577 .413 .437 .766 .775 .508 .522
Compliance
Vas
41.6 37.9 51.5 52.7 84.8 94.6 86.5 85.6
Linear Excursion
Xmax
13 mm
13 mm
13 mm
13 mm
Cone Area
Sd
360cm2 360cm2 523cm2 523cm2
Sensitivity 1 w @ 1 meter
SPL
86db 86db 87db 87db
Power Handling RMS
200 W
200 W
250 W
250 W
Max Power Handling
400 W
400 W
500 W
500 W
Enclosure Recommendations
Sealed Enclosure
Optimum Sealed
1.0 cuft
1.0 cuft
1.0 cuft
1.0 cuft
Small Sealed
0.5cuft
0.5 cuft
.65 cuft
.65 cuft
Ported Enclosure
Volume
1.0 cuft
1.0cuft
1.5 cuft
1.5 cuft
Port Frequency
50 Hz
50 Hz
50 Hz
40 Hz
Port Area and Length
3”X5.4”
3” X5.4”
3” X5.7”
3”X5.7”
Calculating Enclosure Volume
It is difficult to give exact box dimensions that are
universal for all cars and trucks. It is for this reason
that you must be able to calculate the space in which
you have available in order to achieve the proper air
volume required.
