The JBL Model 4642A is a high quality subwoofer system, featuring an advanced technology 460 mm (18 in), low frequency transducers mounted in a direct radiator, bass-reflex enclosure for smooth response to the lowest audible frequencies. The 4642A is ideal for low-frequency augmentation of either analog or digital soundtracks in motion picture theaters and for general sound reinforcement applications.

FEATURES

• 1200 Watts Continuous Pink Noise, 2400 Watts Continuous Program Power Handling
• Usable response to 22 Hz (-10 dB, no EQ), flat to 22 Hz (-3 dB) with External EQ
• 2241H VGCTM Vented Gap Cooled Drivers – High Sensitivity – Low Power Compression – High Maximum-SPL Capability – Low 2nd and 3rd Harmonic – Distortion – Symmetrical Field Geometry SFGTM – Magnet Structure – Long Excursion Capability
• proved by Lucasfilm, Ltd. for THX® installations

SPECIFICATIONS

• Rated Impedance 4 ohms
• Minimum Impedance 3.2 ohms
• Power Handling Capability -
• Continuous Pink Noise 1200 Watts
• Continuous Program 2400 Watts
• Peak Power 4800 Watts
• Output Capability -
• Axial Sensitivity 50 Hz to 500 Hz; 101 dB, 1W @ 1m 
• 40 Hz to 100 Hz; 100 dB, 1W @ 1m
• Net Weight: 98 kg (216 lbs.)
• Dimensions H x W x D 762 mm x 1219 mm x 610 mm 
• 30 in x 48 in x 24 in