JBL GT1081
Service Manual

GT1081 10" Woofer � Technical Data
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS: 10" (254.0 MM) 90 dB 275 WRMS 20 ~ 500 HZ 8 OHMS 2.0" (50.7 MM)

SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)

GT1081
(side view)

mounting depth 5.375" (136.00 mm)

VBOX = 0.75 ft3 (21.24 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

cutout diameter 9.25" (235.00 mm) outer diameter 10.00" (254.00 mm)

SEALED FREQUENCY RESPONSE @ 2.83 V
95 dB In-Car 12 dB LP @ 80 Hz 90

THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE: R
EVC

85 Out-Of-Car 80 75 70 65

(OHMS) . . . . . . 7.56

VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 1.73 DRIVER RADIATING AREA: S D (IN 2) . . . . . . . . 55.02 S D (CM2) . . . . . . 355.00 MOTOR FORCE FACTOR: COMPLIANCE VOLUME: SUSPENSION COMPLIANCE: MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: FREE-AIR RESONANCE: MECHANICAL Q: ELECTRICAL Q: TOTAL Q: MAGNETIC-GAP HEIGHT: VOICE-COIL HEIGHT: MAXIMUM EXCURSION: BL (TM) . . . . . . . . 13.98 VAS (FT3) . . . . . . . . 3.17 VAS (LITERS) . . . . . 89.73 C MS (µM/N) . . . . 501.37 MMS (GRAMS). . . . . 60.61 MMD (GRAMS) . . . . 56.76 FS (HZ) . . . . . . . . 28.87 Q MS . . . . . . . . . . . 6.55 Q ES . . . . . . . . . . . . 0.43 Q TS . . . . . . . . . . . . 0.40 HAG (IN) . . . . . . . . . 0.31 HAG (MM) . . . . . . . . 7.92 H (IN) . . . . . . . . . 1.25
VC

60
C

55 20 Frequency 50 100 Hz 200 500 1k

2k

SEALED EXCURSION/GROUP DELAY @ 300 W
20.0 Xd mM 17.5 15.0 T mSec 10.0 7.5 5.0

12.5

Group Delay

2.5

10.0

0.0

7.5

-2.5

HVC (MM) . . . . . . . 31.75 X MAX (IN) . . . . . . . . 0.47 X MAX (MM) . . . . . . 11.91

5.0 2.5 0.0 20 Frequency 50

Transducer Excursion

-5.0 -7.5 -10.0 2k
C

100 Hz

200

500

1k

Harman Consumer Group � 250 Crossways Park Drive � Woodbury, NY 11797 � VOICE: 516-496-3400 � FAX: 516-496-4868 � www.jbl.com