![](/html/b4/b4fc/b4fc73c13b3f54961d132c38f4eb4241a2b7ae7d9fa66e4fbd4d5f1b948c3190/bg1.png)
mounting depth
5.25" (133.35 mm)
cutout diameter
14.00" (355.60 mm)
outer diameter
15.25" (387.35 mm)
Ohms
100.0
1.0
3.0
10.0
30.0
20 Frequency 50 100 Hz 200 500 1k 2k
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 @ 75 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
SPECIFICATIONS
DIAMETER: 15" (0.59 MM)
S
ENSITIVITY (2.83 V @ 1 M): 94 dB
P
OWER HANDLING: 600 W
RMS
FREQUENCY RESPONSE: 20 ~ 300 HZ
NOMINAL IMPEDANCE:4 OHMS
VOICE-COIL DIAMETER: 4.0" (102.00 MM)
D
IMENSIONS:
THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE:R
EVC
(OHMS) . . . . . . 2.50
V
OICE COIL INDUCTANCE @ 1 KHZ:L
EVC
(MH). . . . . . . . 0.98
D
RIVER RADIATING AREA:S
D
(IN2) . . . . . . . 135.34
S
D
(CM2). . . . . . . 877.00
M
OTOR FORCE FACTOR:BL (TM) . . . . . . . . 13.49
C
OMPLIANCE VOLUME:V
AS
(FT3). . . . . . . . . 8.01
V
AS
(LITERS). . . . . 188.95
S
USPENSION COMPLIANCE:C
MS
(µM/N) . . . . 173.00
M
OVING MASS, AIR LOAD:M
MS
(GRAMS) . . . . 119.52
M
OVING MASS, DIAPHRAGM:M
MD
(GRAMS). . . . 104.59
F
REE-AIR RESONANCE:F
S
(HZ) . . . . . . . . 35.00
M
ECHANICAL Q: Q
MS
. . . . . . . . . . . . 5.80
E
LECTRICAL Q: Q
ES
. . . . . . . . . . . . 0.36
T
OTAL Q: Q
TS
. . . . . . . . . . . . 0.34
M
AGNETIC-GAP HEIGHT:H
AG
(IN) . . . . . . . . . 0.32
H
AG
(MM) . . . . . . . . 8.13
V
OICE-COIL HEIGHT:H
VC
(IN) . . . . . . . . . 0.75
H
VC
(MM) . . . . . . . 19.05
M
AXIMUM EXCURSION:X
MAX
(IN) . . . . . . . . 0.22
X
MAX
(MM). . . . . . . . 5.46
IMPEDANCE CURVE
INFINITE BAFFLE
FREQUENCY RESPONSE @ 2.83 V
INFINITE BAFFLE
EXCURSION/GROUP DELAY @ 150 W
1500GTi 15" Woofer – Technical Data
JBL Technical Data . . . . . 7•53
![](/html/b4/b4fc/b4fc73c13b3f54961d132c38f4eb4241a2b7ae7d9fa66e4fbd4d5f1b948c3190/bg2.png)
SEALED
BOX VOLUME
SEALED
FREQUENCY RESPONSE @ 2.83 V
SEALED
EXCURSION/GROUP DELAY @ 500 W
VENTED
BOX VOLUME
VENTED
FREQUENCY RESPONSE @ 2.83 V
VENTED
EXCURSION/GROUP DELAY @ 600 W
1500GTi 15" Woofer – Technical Data
7•54 . . . . . JBL Technical Data
GTi1500
(side view)
(2) Ports
fo = 39 Hz
diameter = 4.0"
length = 9.46"
V
BOX
= 2.86 ft3 (81.00 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
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 @ 70 Hz
C
Xd mM
40
35
30
25
20
15
10
5
0
T mSec
20
15
10
5
0
-5
-10
-15
-20
20 Frequency 50 100 Hz 200 500 1k 2 k
Transducer Excursion
Group Delay
V
BOX
= 1.85 ft3 (52.39 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
GTi1500
(side view)
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 @ 70 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