JBL GT120D Manual de instrucciones
SPECIFICATIONS
DIAMETER: 12" (304.8 MM)
SENSITIVITY (2.83 V @ 1 M): 93 dB
POWER HANDLING: 250 WRMS (1,000 WPEAK)
FREQUENCY RESPONSE: 23 ~ 450 HZ
NOMINAL IMPEDANCE:4OHMS
VOICE-COIL DIAMETER: 2.0" (50.8 MM)
DIMENSIONS:
THIELE-SMALL PARAMETERS
VOICE COIL DCRESISTANCE:R
EVC (OHMS) . . . . . . 3.56
VOICE COIL INDUCTANCE @ 1 KHZ:L
EVC (MH) . . . . . . . 2.54
DRIVER RADIATING AREA:S
D(IN2) . . . . . . . . 82.31
SD(CM2) . . . . . . 531.00
MOTOR FORCE FACTOR:BL(TM) . . . . . . . . 14.78
COMPLIANCE VOLUME:V
AS (FT3) . . . . . . . . 3.22
VAS (LITERS) . . . . . 91.12
SUSPENSION COMPLIANCE:C
MS (µM/N) . . . . 227.58
MOVING MASS, AIR LOAD:M
MS (GRAMS). . . . 181.74
MOVING MASS, DIAPHRAGM:M
MD (GRAMS) . . . 174.70
FREE-AIR RESONANCE:F
S(HZ) . . . . . . . . 24.75
MECHANICAL Q: QMS . . . . . . . . . . . 6.46
ELECTRICAL Q: QES . . . . . . . . . . . . 0.46
TOTAL Q: QTS . . . . . . . . . . . . 0.43
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 @ 300 W
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
GT120d 12" Woofer – Technical Data
mounting depth
6.25" (158.75 mm)
cutout diameter
11.125" (283.00 mm)
outer diameter
12.25" (311.15 mm)
VBOX = 1.00 ft3 (28.32 liters)
(stuffed with loosely-packed fiberfill)
GT120d
(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 @ 300 W
SEALED BANDPASS BOX VOLUME
(INCLUDES DRIVER/PORT DISPLACEMENTS
)
SEALED BANDPASS
FREQUENCY RESPONSE @ 2.83 V
SEALED BANDPASS
TRANSDUCER EXCURSION @ 300 W
JBL Consumer Products • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-496-3400 • FAX: 516-496-4868 • www.jbl.com
GT120d 12" Woofer – Technical Data
GT120d
(side view)
Port
fo= 30.0 Hz
diameter = 4"
length = 13.31"
VBOX = 2.25 ft3 (63.72 liters)
(no 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 = 2.00 ft3
(56.64 liters)
(stuffed with loosely-packed
fiberfill)
diam. = 6"
Port
fo= 45.0 Hz length =
10.57"
VREAR = 1.50 ft3 (42.48 liters)
(stuffed with loosely-packed fiberfill)
GT120d
(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
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