VENTED BOX VOLUME(INCLUDES DRIVER/PORT DISPLACEMENTS)VENTED ENCLOSUREFREQUENCY RESPONSE @ 2.83 VVENTED ENCLOSURE CONEEXCURSION @ 300 WBANDPASS BOX VOLUME(INCLUDES DRIVER/PORT DISPLACEMENTS)BANDPASS ENCLOSUREFREQUENCY RESPONSE @ 2.83 VBANDPASS ENCLOSURE CONEEXCURSION @ 300 WHarman Consumer Group • 250 Crossways Park Drive • Woodbury, NY 11797 • VOICE: 516-674-4463 • www.infinitysystems.comJBL GTO 1204D(side view)PortfB = 34.0 Hzdiameter = 4"102mmlength = 10"254mmV BOX = 1.75 ft 3 (49.55 liters) V REAR = 1.00 ft 3 (28.32 liters) VFRONT =1.25 ft 3(35.40 liters)JBL GTO 1204D(side view)diam. = 4"102mm2 PortsfB= 62 Hzlength =8"204mm20 Hz 30 40 50 60 70 80 90 100 200 30055606570758085909510010520 Hz 30 40 50 60 70 80 90 100 200 300556065707580859095100105dBSPL dBSPL20 Hz 30 40 50 60 70 80 90 100 200 3005u10u20u50u100u200u500u1m2m5m10m20m30m M20 Hz 30 40 50 60 70 80 90 100 200 3005u10u20u50u100u200u500u1m2m5m10m20m30m MOut-Of-CarOut-Of-CarIn-Car12 dB LP @ 80 Hz In-Car12 dB LP @ 80 HzGTO 1204D 12" Woofer – Technical Data