JBL GT4-10 Instruction manual

SPECIFICATIONS
DIAMETER:10" (250.0 MM)
SENSITIVITY (2.83V @ 1M): 90 dB
POWER HANDLING: 250 WRMS (1,000 WPEAK)
FREQUENCY RESPONSE: 28 ~ 500 HZ
NOMINAL IMPEDANCE:4OHMS
VOICE-COIL DIAMETER: 2.0" (50.8 MM)
DIMENSIONS:
THIELE-SMALL PARAMETERS
VOICE COIL DCRESISTANCE:R
EVC (OHMS). . . . . . 3.63
VOICE COIL INDUCTANCE @ 1 KHZ:L
EVC (MH) . . . . . . . 2.68
DRIVER RADIATING AREA:S
D(IN2). . . . . . . . 53.63
SD(CM2) . . . . . . 346.00
MOTOR FORCE FACTOR:BL(TM). . . . . . . . 14.30
COMPLIANCE VOLUME:V
AS (FT3) . . . . . . . . 1.27
VAS (LITERS) . . . . . 36.10
SUSPENSION COMPLIANCE:C
MS (µM/N) . . . . 212.35
MOVING MASS, AIR LOAD:M
MS (GRAMS). . . . 136.18
MOVING MASS, DIAPHRAGM:M
MD (GRAMS) . . . 132.48
FREE-AIR RESONANCE:F
S(HZ) . . . . . . . . 29.60
MECHANICAL Q: QMS . . . . . . . . . . . 6.45
ELECTRICAL Q: QES. . . . . . . . . . . . 0.45
TOTAL Q: QTS. . . . . . . . . . . . 0.42
MAGNETIC-GAP HEIGHT:H
AG (IN). . . . . . . . . 1.30
HAG (MM) . . . . . . . 33.00
VOICE-COIL HEIGHT:H
VC (IN). . . . . . . . . 0.31
HVC (MM). . . . . . . . 8.00
MAXIMUM EXCURSION:X
MAX (IN). . . . . . . . 0.49
XMAX (MM) . . . . . . 12.50
SEALED BOX VOLUME
(INCLUDES DRIVER DISPLACEMENT)
SEALED
FREQUENCY RESPONSE @ 2.83 V
SEALED
TRANSDUCER EXCURSION @ 250 W
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • www.jbl.com
GT4-10 250mm Woofer – Technical Data
mounting depth
5.75" (147.00 mm)
cutout diameter
9.125"(232.00 mm)
outer diameter
10.125"(258.00 mm)
VBOX = 0.75 ft3 (21.24 liters)
(stuffed with loosely-packed fiberfill)
GT4-10
(side view)
C
dB
100
90
80
70
60
50
40
30
20 20 Frequency 50 100 Hz 200 500 1k 2k
Out-Of-Car
In-Car
12 dB LP@ 80Hz
C
Xd mM
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0 20 Frequency 50 100 Hz 200 500 1k 2k

VENTED BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS)
VENTED
FREQUENCY RESPONSE @ 2.83 V
VENTED
TRANSDUCER EXCURSION @ 250 W
SEALED BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS )
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
TRANSDUCER EXCURSION @ 225 W
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • www.jbl.com
GT4-10 250mm Woofer – Technical Data
GT4-10
(side view)
Port
fo= 25.0 Hz
diameter = 3"
length = 11.96"
VBOX = 1.75 ft3 (49.56 liters)
(stuffed with loosely-packed fiberfill)
C
dB
110
100
90
80
70
60
50
40
30 20 Frequency 50 100Hz 200 500 1k 2k
Out-Of-Car
In-Car
12 dB LP@ 80Hz
C
Xd mM
40
35
30
25
20
15
10
5
0 20 Frequency 50 100 Hz 200 500 1k 2k
VFRONT = 1.25 ft3
(35.40 liters)
(stuffed with loosely-packed
fiberfill)
diam. = 4"
Port
fo= 47.0 Hz length =
6.81"
VREAR = 1.75 ft3 (49.56 liters)
(stuffed with loosely-packed fiberfill)
GT4-10
(side view)
C
dB
110
100
90
80
70
60
50
40
30 20 Frequency 50 100Hz 200 500 1k 2k
Out-Of-Car
In-Car
12 dB LP@ 80Hz
C
Xd mM
20 Frequency 50 100Hz 200 500 1k 2k
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0