[. . . ] [. . . ] 4. 19 95 Out-Of-Car 90 85 80 75 70 65 20 Frequency 50 100 Hz 200 500 1k C 2k INFINITE BAFFLE EXCURSION/GROUP DELAY @ 50 W 20. 0 Xd mM T mSec 10. 0 17. 5 7. 5 15. 0 5. 0 12. 5 Group Delay 10. 0 2. 5 0. 0 7. 5 -2. 5 5. 0 -5. 0 2. 5 Transducer Excursion 0. 0 20 Frequency 50 100 Hz 200 500 1k -7. 5 -10. 0 2k C JBL Technical Data . 7·41 P1500 15" Woofer ­ Technical Data SEALED BOX VOLUME VENTED BOX VOLUME length = 5. 55" Port fo = 30 Hz P1500 (side view) P1500 (side view) VBOX = 2. 25 ft (63. 72 liters) (all sides lined with 1-inch fiberglass or fiberfill) 3 VBOX = 3. 50 ft (99. 12 liters) (all sides lined with 1-inch fiberglass or fiberfill) 3 diameter = 4. 0" SEALED FREQUENCY RESPONSE @ 2. 83 V 100 dB In-Car 12 dB LP @ 65 Hz 105 95 Out-Of-Car 100 VENTED FREQUENCY RESPONSE @ 2. 83 V dB In-Car 12 dB LP @ 80 Hz 90 95 Out-Of-Car 85 90 80 85 75 80 70 75 65 70 60 20 Frequency 50 100 Hz 200 500 1k C 65 20 Frequency 50 100 Hz 200 500 1k C 2k 2k SEALED EXCURSION/GROUP DELAY @ 200 W 8. 0 Xd mM T mSec 10. 0 20. 0 7. 0 7. 5 17. 5 VENTED EXCURSION/GROUP DELAY @ 250 W Xd mM T mSec 20 15 6. 0 5. 0 15. 0 10 5. 0 Group Delay 4. 0 2. 5 12. 5 Group Delay 5 0. 0 10. 0 0 3. 0 -2. 5 7. 5 -5 2. 0 -5. 0 5. 0 -10 1. 0 Transducer Excursion C -7. 5 2. 5 Transducer Excursion C -15 0. 0 Frequency 50 100 Hz 200 500 1k 2k -10. 0 0 20 Frequency 50 100 Hz 200 500 1k -20 2k 7·42 . JBL Technical Data P1500 15" Woofer ­ Technical Data SEALED BANDPASS BOX VOLUME (2) Ports fo = 60 Hz length = 7. 69" NOTES P1500 (side view) diam. = 4" VREAR = 2. 25 ft3 (63. 72 liters) (all sides lined with 1-inch fiberglass or fiberfill) VFRONT = 1. 40 ft3 (39. 65 liters) (all sides lined with 1-inch fiberglass or fiberfill) SEALED BANDPASS FREQUENCY RESPONSE @ 2. 83 V 105 dB In-Car 12 dB LP @ 90 Hz 100 95 Out-Of-Car 90 85 80 75 70 65 20 Frequency 50 100 Hz 200 500 1k C 2k SEALED BANDPASS EXCURSION/GROUP DELAY @ 175 W 8. 0 Xd mM T mSec 20 7. 0 15 6. 0 Group Delay 10 5. 0 5 4. 0 0 3. 0 Transducer Excursion 2. 0 -5 -10 1. 0 -15 0. 0 20 Frequency 50 100 Hz 200 500 1k C -20 2k JBL Technical Data . [. . . ] [. . . ]