Gt1200d 12" Woofer – Technical Data

Transcript

GT1200d 12" Woofer – Technical Data SPECIFICATIONS DIAMETER: SENSITIVITY (2.83V @ 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 (PER COIL) 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 110 VOICE COIL DC RESISTANCE: REVC (OHMS) . . . . . . 1.60 VOICE COIL INDUCTANCE @ 1 KHZ: LEVC (MH) . . . . . . . 1.12 SD (IN2). . . . . . . . 82.10 DRIVER RADIATING AREA: SD (CM2) . . . . . . 532.00 BL (TM) . . . . . . . . . 7.42 MOTOR FORCE FACTOR: VAS (FT3) . . . . . . . . 7.12 COMPLIANCE VOLUME: VAS (LITERS) . . . . 168.00 CMS (µM/N) . . . . 420.00 SUSPENSION COMPLIANCE: MMS (GRAMS). . . . . 99.41 MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: MMD (GRAMS) . . . . 92.36 FS (HZ) . . . . . . . . 24.63 FREE-AIR RESONANCE: QMS. . . . . . . . . . . 11.29 MECHANICAL Q: QES . . . . . . . . . . . . 0.48 ELECTRICAL Q: QTS . . . . . . . . . . . . 0.43 TOTAL Q: HAG (IN) . . . . . . . . . 0.31 MAGNETIC-GAP HEIGHT: HAG (MM) . . . . . . . . 7.92 HVC (IN) . . . . . . . . . 0.88 VOICE-COIL HEIGHT: HVC (MM) . . . . . . . 22.23 XMAX (IN). . . . . . . . .0.28 MAXIMUM EXCURSION: XMAX (MM) . . . . . . . 7.15 *VOICE COILS CONNECTED IN PARALLEL 200 500 1k 2k dB In-Car 12 dB LP @ 70 Hz 105 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) 50 100 95 Out-Of-Car 90 85 80 75 70 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 2.5 12.5 Group Delay 10.0 0.0 7.5 -2.5 5.0 -5.0 -7.5 2.5 Transducer Excursion 0.0 -10.0 2k C 20 Frequency 50 100 Hz 200 500 1k JBL Technical Data . . . . . 7•23 GT1200d 12" Woofer – Technical Data VENTED BOX VOLUME SEALED BOX VOLUME length = 12.26" GT1200d GT1200d (side view) (side view) VBOX = 1.25 ft3 (35.40 liters) VBOX = 2.00 ft (56.64 liters) (all sides lined with 1-inch fiberglass or fiberfill) 3 (stuffed with loosely-packed fiberfill) SEALED FREQUENCY RESPONSE @ 2.83 V 100 diameter = 4.0" VENTED FREQUENCY RESPONSE @ 2.83 V In-Car 12 dB LP @ 80 Hz dB Port fo = 30 Hz 105 In-Car 12 dB LP @ 90 Hz dB 100 95 Out-Of-Car 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 SEALED EXCURSION/GROUP DELAY @ 175 W Frequency 50 100 Hz 200 500 1k 2k VENTED EXCURSION/GROUP DELAY @ 225 W T mSec Xd mM C 20 2k T mSec Xd mM 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 20 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 7•24 . . . . . JBL Technical Data 500 1k C 20 Frequency 50 100 Hz 200 500 1k 2k -20 GT1200d 12" Woofer – Technical Data SEALED BANDPASS BOX VOLUME NOTES Port fo = 65 Hz length = 9.95" GT1200d (side view) diam. = 4" VREAR = 1.20 ft3 (33.98 liters) (all sides lined with 1-inch fiberglass or fiberfill) VFRONT = 0.60 ft3 (16.99 liters) SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V 105 In-Car 12 dB LP @ 90 Hz dB 100 95 90 Out-Of-Car 85 80 75 70 65 C 20 Frequency 50 100 Hz 200 500 1k 2k SEALED BANDPASS EXCURSION/GROUP DELAY @ 150 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 200 500 1k -40 2k JBL Technical Data . . . . . 7•25