Read JBL 1200.4 GTi Service Tips online
GTi1200
(side view)
Port
fo = 31 Hz
diameter = 4.0"
length = 8.36"
V
BOX
=
2.50 ft
3
(70.80 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
C
dB
110
105
100
95
90
85
80
75
70
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
T mSec
10.0
7.5
5.0
2.5
0.0
-2.5
-5.0
-7.5
-10.0
20 Frequency 50 100 Hz 200 500 1k 2 k
Transducer Excursion
Group Delay
V
BOX
=
1.35 ft
3
(38.23 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
GTi1200
(side view)
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
10.0
7.5
5.0
2.5
0.0
-2.5
-5.0
-7.5
-10.0
20 Frequency 50 100 Hz 200 500 1k 2 k
Transducer Excursion
Group Delay
SEALED
BOX VOLUME
BOX VOLUME
SEALED
FREQUENCY RESPONSE @ 2.83 V
FREQUENCY RESPONSE @ 2.83 V
SEALED
EXCURSION/GROUP DELAY @ 300 W
EXCURSION/GROUP DELAY @ 300 W
VENTED
BOX VOLUME
BOX VOLUME
VENTED
FREQUENCY RESPONSE @ 2.83 V
FREQUENCY RESPONSE @ 2.83 V
VENTED
EXCURSION/GROUP DELAY @ 300 W
EXCURSION/GROUP DELAY @ 300 W
1200GTi 12" Woofer – Technical Data
JBL Technical Data . . . . . 7•51
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