JBL GTO1220
Manual de Servicio

GTO1220 12" Woofer � Technical Data
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 6.81" (174.00 mm)

12" (304.8 MM) 91 dB 300 WRMS (1,200 WPEAK) 20 ~ 450 HZ 2 OHMS 3.0" (76.2 MM)

SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)

GTO1220
(side view)

VBOX = 1.00 ft3 (28.32 liters)
(stuffed with loosely-packed fiberfill)

cutout diameter 10.88" (277.00 mm) outer diameter 12.31" (313.00 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 Out-Of-Car 85

(OHMS) . . . . . . 2.04

VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 0.70 DRIVER RADIATING AREA: 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: S D (IN 2) . . . . . . . . 74.71 S D (CM2) . . . . . . 482.00 BL (TM) . . . . . . . . 12.33 VAS (FT3) . . . . . . . . 1.73 VAS (LITERS) . . . . . 49.03 C MS (µM/N) . . . . 148.61 MMS (GRAMS). . . . 220.77 MMD (GRAMS) . . . 214.68 FS (HZ) . . . . . . . . 27.79 Q MS . . . . . . . . . . . 6.18 Q ES . . . . . . . . . . . . 0.52 Q TS . . . . . . . . . . . . 0.48 HAG (IN) . . . . . . . . . 0.47 HAG (MM) . . . . . . . 12.00 H (IN) . . . . . . . . . 1.28
VC

80 75 70

65
C

60 20 Frequency 50 100 Hz 200 500 1k

2k

SEALED TRANSDUCER EXCURSION @ 400 W
20.0 Xd mM 17.5 15.0

12.5

10.0

7.5

HVC (MM) . . . . . . . 32.50 X MAX (IN) . . . . . . . . 0.40 X MAX (MM) . . . . . . 10.25

5.0 2.5 0.0 20 Frequency 50 100 Hz 200 500 1k
C

2k

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