Gt1200 12" Woofer – Technical Data

Transcript

GT1200 12" Woofer – Technical Data SPECIFICATIONS DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS: IMPEDANCE CURVE 12" (304.8 MM) 95 dB 280 WRMS 25 ~ 3,000 HZ 4 OHMS 2.0" (50.7 MM) 100.0 Ohms 30.0 10.0 3.0 mounting depth 5.75" (146.05 mm) 1.0 20 Frequency 105 VOICE COIL DC RESISTANCE: R EVC (OHMS) . . . . . . 3.17 VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (M H). . . . . . . . 2.16 S D (IN 2) . . . . . . . . 82.10 DRIVER RADIATING AREA: S D (CM2). . . . . . . 532.00 B L (TM) . . . . . . . . 12.82 MOTOR FORCE FACTOR: VAS (FT3). . . . . . . . . 6.60 COMPLIANCE VOLUME: VAS (LITERS). . . . . 155.73 C MS (µM/N) . . . . 387.48 SUSPENSION COMPLIANCE: MMS (GRAMS) . . . . 105.69 MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: MMD (GRAMS). . . . . 98.64 FS (HZ) . . . . . . . . 24.80 FREE-AIR RESONANCE: Q MS . . . . . . . . . . . 11.76 MECHANICAL Q: Q ES . . . . . . . . . . . . 0.32 ELECTRICAL Q: Q TS . . . . . . . . . . . . 0.31 TOTAL Q: HAG (IN) . . . . . . . . . 0.31 MAGNETIC-GAP HEIGHT: HAG (MM) . . . . . . . . 7.92 HVC (IN) . . . . . . . . . 0.88 VOICE-COIL HEIGHT: HVC (MM) . . . . . . . 22.23 X MAX (IN) . . . . . . . . .0.28 MAXIMUM EXCURSION: X MAX (MM). . . . . . . . 7.15 500 1k 2k In-Car 12 dB LP @ 80 Hz 95 Out-Of-Car 90 85 80 75 70 65 C 20 Frequency 50 100 Hz 200 500 1k 2k INFINITE BAFFLE EXCURSION/GROUP DELAY @ 75 W 20.0 T mSec Xd mM 10.0 17.5 7.5 15.0 5.0 12.5 2.5 Group Delay 10.0 0.0 7.5 -2.5 5.0 -5.0 2.5 -7.5 Transducer Excursion 0.0 -10.0 2k C 20 7•20 . . . . . JBL Technical Data 200 dB 100 THIELE-SMALL PARAMETERS 100 Hz INFINITE BAFFLE FREQUENCY RESPONSE @ 2.83 V cutout diameter 11.13" (283.00 mm) outer diameter 12.18" (309.44 mm) 50 Frequency 50 100 Hz 200 500 1k GT1200 12" Woofer – Technical Data VENTED BOX VOLUME SEALED BOX VOLUME length = 14.00" GT1200 GT1200 (side view) (side view) 3 VBOX = 1.80 ft (50.98 liters) (all sides lined with 1-inch fiberglass or fiberfill) 3 VBOX = 1.20 ft (33.98 liters) (all sides lined with 1-inch fiberglass or fiberfill) SEALED FREQUENCY RESPONSE @ 2.83 V 100 Port fo = 30 Hz diameter = 4.0" VENTED FREQUENCY RESPONSE @ 2.83 V dB 105 dB In-Car 12 dB LP @ 90 Hz In-Car 12 dB LP @ 90 Hz 95 100 Out-Of-Car 90 95 85 90 80 85 75 80 70 75 65 70 60 65 C 20 Frequency 50 100 Hz 200 500 1k 2k C 20 SEALED EXCURSION/GROUP DELAY @ 250 W Frequency 50 100 Hz 200 500 1k 2k VENTED EXCURSION/GROUP DELAY @ 275 W T mSec Xd mM Out-Of-Car T mSec Xd mM 20 10.0 20.0 7.5 17.5 15 15.0 5.0 15.0 10 12.5 2.5 12.5 0.0 10.0 -2.5 7.5 20.0 17.5 Group Delay 10.0 5 Group Delay 0 Transducer Excursion 7.5 -5 Transducer Excursion 5.0 -5.0 5.0 -10 2.5 -7.5 2.5 -15 -10.0 2k 0 0.0 C 20 Frequency 50 100 Hz 200 500 1k C 20 Frequency 50 100 Hz 200 500 1k 2k JBL Technical Data . . . . . 7•21 -20 GT1200 12" Woofer – Technical Data SEALED BANDPASS BOX VOLUME NOTES Port fo = 70 Hz length = 8.11" GT1200 (side view) diam. = 4" VREAR = 1.20 ft3 (33.98 liters) (all sides lined with 1-inch fiberglass or fiberfill) VFRONT = 0.50 ft3 (14.16 liters) SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V 100 In-Car 12 dB LP @ 95 Hz dB 95 Out-Of-Car 90 85 80 75 70 65 60 C 20 Frequency 50 100 Hz 200 500 1k 2k SEALED BANDPASS EXCURSION/GROUP DELAY @ 200 W 20.0 T mSec Xd mM 40 17.5 30 15.0 20 12.5 10 Group Delay 10.0 0 7.5 -10 -20 5.0 Transducer Excursion -30 2.5 0.0 C 20 Frequency 50 100 Hz 200 7•22 . . . . . JBL Technical Data 500 1k 2k -40