JBL GT1241D
Instrukcja Serwisowa

GT1241D 12" Woofer � Technical Data
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 6.00" (152.00 mm)

12" (304.8 MM) 93 dB 300 WRMS 18 ~ 500 HZ 4 OHMS (PER COIL) 2.0" (50.7 MM)

SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)

GT1241D
(side view)

VBOX = 1.25 ft3 (35.40 liters)
(all sides lined with 1-inch fiberglass or fiberfill)

cutout diameter 11.125" (283.00 mm) outer diameter 12.00" (304.80 mm)

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

THIELE-SMALL PARAMETERS*
VOICE COIL DC RESISTANCE: R
EVC

90 85

Out-Of-Car

(OHMS) . . . . . . 1.92

VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 1.33 DRIVER RADIATING AREA: S D (IN 2) . . . . . . . . 82.46 S D (CM2) . . . . . . 532.00 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) . . . . . . . . . 9.09 VAS (FT3) . . . . . . . . 5.17 VAS (LITERS) . . . . 146.33 C MS (µM/N) . . . . 354.09 MMS (GRAMS). . . . 143.74 MMD (GRAMS) . . . 136.69 FS (HZ) . . . . . . . . 22.00 Q MS . . . . . . . . . . . 8.35 Q ES . . . . . . . . . . . . 0.46 Q TS . . . . . . . . . . . . 0.44 H (IN) . . . . . . . . . 0.31
AG

80 75

70 65

60

C

20

Frequency

50

100 Hz

200

500

1k

2k

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

15.0

5.0

12.5

Group Delay

2.5

HAG (MM) . . . . . . . . 7.92 HVC (IN) . . . . . . . . . 1.25 HVC (MM) . . . . . . . 31.75 X MAX (IN) . . . . . . . .0.47 X MAX (MM) . . . . . . 11.91 *VOICE COILS CONNECTED IN PARALLEL

10.0 7.5 5.0 Transducer Excursion 2.5

0.0 -2.5 -5.0 -7.5

0.0

20

Frequency

50

100 Hz

200

500

1k

-10.0 2k
C

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