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CAR AUDIO
VENTED BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
Reference 1240w
(side view)
3
V
= 2 ft
(56.63 liters)
BOX
VENTED ENCLOSURE
FREQUENCY RESPONSE @ 2.83 V
dBSPL
105
100
In-Car
95
12 dB LP @ 80 Hz
90
85
Out-Of-Car
80
75
70
65
60
55
20 Hz
30
40
50
60
VENTED ENCLOSURE CONE
EXCURSION @ 300 W
30m M
20m
10m
5m
2m
1m
500u
200u
100u
50u
20u
10u
5u
20 Hz
30
40
50
60
Harman Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-674-4463 • www.infinitysystems.com
Reference 1240w 12" Woofer – Technical Data
Port
length = 12-1/4"
f B = 30.0 Hz
312mm
diameter = 4"
102mm
70
80 90 100
200
200
70
80 90 100
BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
Reference 1240w
(side view)
3
V
= 1.25 ft
(35.40 liters)
REAR
BANDPASS ENCLOSURE
FREQUENCY RESPONSE @ 2.83 V
dBSPL
105
100
95
In-Car
12 dB LP @ 80 Hz
90
85
80
Out-Of-Car
75
70
65
60
55
20 Hz
30
40
300
BANDPASS ENCLOSURE CONE
EXCURSION @ 300 W
30m M
20m
10m
5m
2m
1m
500u
200u
100u
50u
20u
10u
5u
300
20 Hz
30
40
2 Ports
f B = 63 Hz
diam. = 4"
102mm
V
= 1.25 ft
FRONT
(35.40 liters)
50
60
70
80 90 100
50
60
70
80 90 100
length =
8"
204mm
3
200
300
200
300
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