Sealed Bandpass Box Volume; Frequency Response @ 2.83 V; Excursion/Group Delay @ 500 W - JBL 1200GTi Technical Data

SEALED BANDPASS
BOX VOLUME
GTi1200
(side view)
3
V = 1.35 ft (38.23 liters)
REAR
(all sides lined with 1-inch fiberglass or fiberfill)
SEALED BANDPASS

FREQUENCY RESPONSE @ 2.83 V

dB
In-Car
100
12 dB LP @ 80 Hz
95
90
Out-Of-Car
85
80
75
70
65
60
20 Frequency 50 100 Hz
SEALED BANDPASS

EXCURSION/GROUP DELAY @ 500 W

Xd mM
20.0
17.5
15.0
12.5
Group Delay
10.0
7.5
Transducer Excursion
5.0
2.5
0.0
20 Frequency 50 100 Hz
7•52 . . . . . JBL Technical Data
1200GTi 12" Woofer – Technical Data
Port
length =
12.61"
f o = 65 Hz
diam. = 4"
3
V = 0.50 ft
FRONT
(14.16 liters)
200 500 1k
T mSec
200 500 1k
NOTES
C
2 k
100
75
50
25
0
-25
-50
-75
-100
C
2 k