GT120 12" Woofer Technical Data

SPECIFICATIONS

DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 6.25" (158.75 mm)
12" (304.8 MM) 93 dB 250 WRMS (1,000 WPEAK) 23 ~ 450 HZ 4 OHMS 2.0" (50.8 MM)
SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)

(side view)

VBOX = 1.00 ft3 (28.32 liters)
(stuffed with loosely-packed fiberfill)
cutout diameter 11.125" (283.00 mm) outer diameter 12.25" (311.15 mm)
SEALED FREQUENCY RESPONSE @ 2.83 V
100 dB In-Car 12 dB LP @ 80 Hz 90 Out-Of-Car 80

THIELE-SMALL PARAMETERS

VOICE COIL DC RESISTANCE: R EVC (OHMS). 3.56 VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (M H). 2.54 S D (IN 2). 82.31 DRIVER RADIATING AREA: S D (CM2). 531.00 B L (TM). 14.78 MOTOR FORCE FACTOR: VAS (FT3). 3.22 COMPLIANCE VOLUME: VAS (LITERS). 91.12 C MS (M/N). 227.58 SUSPENSION COMPLIANCE: MMS (GRAMS). 181.74 MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: MMD (GRAMS). 174.70 FS (HZ). 24.75 FREE-AIR RESONANCE: Q MS. 6.46 MECHANICAL Q: Q ES. 0.46 ELECTRICAL Q: Q TS. 0.43 TOTAL Q: HAG (IN). 1.30 MAGNETIC-GAP HEIGHT: HAG (MM). 33.00 HVC (IN). 0.31 VOICE-COIL HEIGHT: HVC (MM). 8.00 X MAX (IN). 0.49 MAXIMUM EXCURSION: X MAX (MM). 12.50

Frequency Hz 1k

SEALED TRANSDUCER EXCURSION @ 300 W

20.0 Xd mM 17.5

0.Frequency Hz 1k
JBL Consumer Products 250 Crossways Park Drive Woodbury, NY 11797 VOICE: 516-496-3400 FAX: 516-496-4868 www.jbl.com
VENTED BOX VOLUME (INCLUDES DRIVER/PORT DISPLACEMENTS) SEALED BANDPASS BOX VOLUME (INCLUDES DRIVER/PORT DISPLACEMENTS)
length = 13.31" length = 10.57"

fo = 30.0 Hz

fo = 45.0 Hz
(side view) diam. = 6"

VBOX =

2.25 ft3 (63.72 liters)

(no fiberfill)

diameter = 4"
VREAR = 1.50 ft3 (42.48 liters)
VFRONT = 2.00 ft3 (56.64 liters)
VENTED FREQUENCY RESPONSE @ 2.83 V
110 dB In-Car 12 dB LP @ 80 Hz 100 Out-Of-Car 100 110
SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V
dB In-Car 12 dB LP @ 80 Hz

Out-Of-Car

VENTED TRANSDUCER EXCURSION @ 300 W

40 Xd mM 20.17.5

SEALED BANDPASS TRANSDUCER EXCURSION @ 300 W