Read JBL 1500.4 GTi (serv.man2) 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
V
REAR
=
1.85 ft
3
(52.39 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
V
FRONT
=
1.00 ft
3
(28.32 liters)
GTi1500
(side view)
diam. = 4"
(2) Ports
fo= 75 Hz
length =
8.53"
C
dB
105
100
95
90
85
80
75
70
65
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
40
30
20
10
0
-10
-20
-30
-40
20 Frequency 50 100 Hz 200 500 1k 2 k
Transducer Excursion
Group Delay
1500GTi 15" Woofer – Technical Data
JBL Technical Data . . . . . 7•55
