JBL GT 1500 Service Tips ▷ View online
SPECIFICATIONS
D
IAMETER
:
15" (381.0
MM
)
S
ENSITIVITY
(2.83 V @ 1
M
):
97 dB
P
OWER
H
ANDLING
:
300 W
RMS
F
REQUENCY
R
ESPONSE
:
20 ~ 2,000 H
Z
N
OMINAL
I
MPEDANCE
:
4
OHMS
V
OICE
-C
OIL
D
IAMETER
:
2.0" (50.7
MM
)
D
IMENSIONS
:
THIELE-SMALL PARAMETERS
V
OICE
C
OIL
D
C
R
ESISTANCE
:
R
EVC
(
OHMS
) . . . . . . 3.25
V
OICE
C
OIL
I
NDUCTANCE
@ 1
K
H
Z
: L
EVC
(
M
H). . . . . . . . 1.99
D
RIVER
R
ADIATING
A
REA
:
S
D
(
IN
2
) . . . . . . . 131.94
S
D
(
CM
2
). . . . . . . 855.00
M
OTOR
F
ORCE
F
ACTOR
:
B
L
(T
M
) . . . . . . . . 11.16
C
OMPLIANCE
V
OLUME
:
V
AS
(
FT
3
). . . . . . . . 19.67
V
AS
(
LITERS
). . . . . 463.93
S
USPENSION
C
OMPLIANCE
:
C
MS
(µ
M
/N) . . . . 446.91
M
OVING
M
ASS
, A
IR
L
OAD
:
M
MS
(
GRAMS
) . . . . 127.79
M
OVING
M
ASS
, D
IAPHRAGM
:
M
MD
(
GRAMS
). . . . 113.42
F
REE
-A
IR
R
ESONANCE
:
F
S
(H
Z
) . . . . . . . . 21.06
M
ECHANICAL
Q:
Q
MS
. . . . . . . . . . . . 8.90
E
LECTRICAL
Q:
Q
ES
. . . . . . . . . . . . 0.44
T
OTAL
Q:
Q
TS
. . . . . . . . . . . . 0.42
M
AGNETIC
-G
AP
H
EIGHT
:
H
AG
(
IN
) . . . . . . . . . 0.31
H
AG
(
MM
) . . . . . . . . 7.92
V
OICE
-C
OIL
H
EIGHT
:
H
VC
(
IN
) . . . . . . . . . 0.67
H
VC
(
MM
) . . . . . . . 17.04
M
AXIMUM
E
XCURSION
:
X
MAX
(
IN
) . . . . . . . . 0.18
X
MAX
(
MM
). . . . . . . . 4.56
IMPEDANCE CURVE
INFINITE BAFFLE
FREQUENCY RESPONSE @ 2.83 V
FREQUENCY RESPONSE @ 2.83 V
INFINITE BAFFLE
EXCURSION/GROUP DELAY @ 40 W
EXCURSION/GROUP DELAY @ 40 W
GT1500 15" Woofer – Technical Data
7•26 . . . . . JBL Technical Data
Ohms
100.0
1.0
3.0
10.0
30.0
20 Frequency 50 100 Hz 200 500 1k 2k
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 @ 60 Hz
12 dB LP @ 60 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
mounting depth
6.69" (170.00 mm)
cutout diameter
13.94" (355.00 mm)
outer diameter
15.13" (384.18 mm)
V
BOX
=
2.50 ft
3
(70.80 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
GT1500
(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 @ 65 Hz
12 dB LP @ 65 Hz
C
Xd mM
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
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
GT1500
(side view)
(2) Ports
fo = 30 Hz
diameter = 4.0"
length = 10.86"
V
BOX
=
4.00 ft
3
(113.28 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 @ 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
20
15
10
5
0
-5
-10
-15
-20
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 @ 200 W
EXCURSION/GROUP DELAY @ 200 W
VENTED
BOX VOLUME
BOX VOLUME
VENTED
FREQUENCY RESPONSE @ 2.83 V
FREQUENCY RESPONSE @ 2.83 V
VENTED
EXCURSION/GROUP DELAY @ 250 W
EXCURSION/GROUP DELAY @ 250 W
GT1500 15" Woofer – Technical Data
JBL Technical Data . . . . . 7•27
SEALED BANDPASS
BOX VOLUME
BOX VOLUME
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
EXCURSION/GROUP DELAY @ 200 W
EXCURSION/GROUP DELAY @ 200 W
NOTES
GT1500 15" Woofer – Technical Data
7•28 . . . . . JBL Technical Data
V
REAR
=
2.50 ft
3
(70.80 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
V
FRONT
=
1.75 ft
3
(49.56 liters)
GT1500
(side view)
diam. = 4"
(2) Ports
fo= 60 Hz
length =
5.45"
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
Display
