Vented/Sealed Bandpass Box - JBL P1220 Technical Data

VENTED BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
P1220
(side view)
3
V = 2.25 ft (63.72 liters)
BOX
(stuffed with loosely-packed fiberfill)
VENTED
FREQUENCY RESPONSE @ 2.83 V
dB
110 In-Car
12 dB LP @ 80 Hz
105
100
Out-Of-Car
95
90
85
80
75
70
20 Frequency 50 100 Hz
VENTED
TRANSDUCER EXCURSION @ 500 W
Xd mM
40
35
30
25
20
15
10
5
0
20 Frequency 50 100 Hz
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
P1220 12" Woofer – Technical Data
Port
length = 12.58"
f o = 28.0 Hz
diameter = 4"
200 500 1k
200 500 1k
SEALED BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
P1220
(side view)
3
V = 1.50 ft (42.48 liters)
REAR
(stuffed with loosely-packed fiberfill)
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
dB
110
In-Car
12 dB LP @ 80 Hz
105
100
Out-Of-Car
95
90
85
80
75
70
C
2 k 20 Frequency 50
SEALED BANDPASS
TRANSDUCER EXCURSION @ 400 W
Xd mM
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
C
2 k 20 Frequency 50
Port
f o = 44.9 Hz
diam. = 6"
V = 2.00 ft
FRONT
(56.64 liters)
(stuffed with loosely-packed
fiberfill)
100 Hz 200 500
100 Hz 200 500
length =
10.50"
3
C
1k 2 k
C
1k 2 k