JBL 1500GTi Instruction manual

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 2k
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 2k
Transducer Excursion
Group Delay
SPECIFICATIONS
DIAMETER: 15" (0.59 MM)
SENSITIVITY (2.83 V @ 1 M): 94 dB
POWER HANDLING: 600 WRMS
FREQUENCY RESPONSE: 20 ~ 300 HZ
NOMINAL IMPEDANCE:4OHMS
VOICE-COIL DIAMETER: 4.0" (102.00 MM)
DIMENSIONS:
THIELE-SMALL PARAMETERS
VOICE COIL DCRESISTANCE:R
EVC (OHMS) . . . . . . 2.50
VOICE COIL INDUCTANCE @ 1 KHZ:L
EVC (MH). . . . . . . . 0.98
DRIVER RADIATING AREA:S
D(IN2) . . . . . . . 135.34
SD(CM2). . . . . . . 877.00
MOTOR FORCE FACTOR:BL(TM) . . . . . . . . 13.49
COMPLIANCE VOLUME:V
AS (FT3). . . . . . . . . 8.01
VAS (LITERS). . . . . 188.95
SUSPENSION COMPLIANCE:C
MS (µM/N) . . . . 173.00
MOVING MASS, AIR LOAD:M
MS (GRAMS) . . . . 119.52
MOVING MASS, DIAPHRAGM:M
MD (GRAMS). . . . 104.59
FREE-AIR RESONANCE:F
S(HZ) . . . . . . . . 35.00
MECHANICAL Q: QMS . . . . . . . . . . . . 5.80
ELECTRICAL Q: QES . . . . . . . . . . . . 0.36
TOTAL Q: QTS . . . . . . . . . . . . 0.34
MAGNETIC-GAP HEIGHT:H
AG (IN) . . . . . . . . . 0.32
HAG (MM) . . . . . . . . 8.13
VOICE-COIL HEIGHT:H
VC (IN) . . . . . . . . . 0.75
HVC (MM) . . . . . . . 19.05
MAXIMUM EXCURSION:X
MAX (IN) . . . . . . . . 0.22
XMAX (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

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"
VBOX = 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 2k
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 2k
Transducer Excursion
Group Delay
VBOX = 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 2k
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 2k
Transducer Excursion
Group Delay

SEALED BANDPASS
BOX VOLUME
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
EXCURSION/GROUP DELAY @ 500 W
NOTES
VREAR = 1.85 ft3 (52.39 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
VFRONT = 1.00 ft3
(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 2k
Out-Of-Car
In-Car
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 2k
Transducer Excursion
Group Delay
1500GTi 15" Woofer – Technical Data
JBL Technical Data . . . . . 7•55