Read JBL 1200.4 GTi Service Tips online
SEALED BANDPASS
BOX VOLUME
BOX VOLUME
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
EXCURSION/GROUP DELAY @ 500 W
EXCURSION/GROUP DELAY @ 500 W
NOTES
1200GTi 12" Woofer – Technical Data
7•52 . . . . . JBL Technical Data
V
REAR
=
1.35 ft
3
(38.23 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
V
FRONT
=
0.50 ft
3
(14.16 liters)
GTi1200
(side view)
diam. = 4"
Port
fo= 65 Hz
length =
12.61"
C
dB
100
95
90
85
80
75
70
65
60
20 Frequency 50 100 Hz 200 500 1k 2 k
Out-Of-Car
In-Car
12 dB LP @ 80 Hz
12 dB LP @ 80 Hz
C
Xd mM
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
T mSec
100
75
50
25
0
-25
-50
-75
-100
20 Frequency 50 100 Hz 200 500 1k 2 k
Transducer Excursion
Group Delay
