JBL 4645C
JBL 4645C

JBL 4645C Single 460 mm (18 in.) Subwoofer System. The JBL Model 4645C is a high quality subwoofer system, featuring an advanced technology 460 mm (18 in), low frequency transducer mounted in a direct radiator, bass-reflex enclosure for smooth response to the lowest audible frequencies. The 4645C is ideal for low-frequency augmentation of either analog or digital soundtracks in motion picture theaters and for general sound reinforcement applications.

  • 800 Watts Continuous Pink Noise, 1600 Watts Continuous Program Power Handling
  • Usable response to 22 Hz (-10 dB, no EQ), flat to 22 Hz (-3 dB) with External EQ
  • 2242H SVGTM Super Vented Gap Cooled Driver – High Sensitivity – Minimal Power Compression – Highest Maximum-SPL Capability – Extremely Low 2nd and 3rd – Harmonic Distortion – Symmetrical Field Geometry SFGTM – Magnet Structure – Extended Excursion Capability
  • Approved by Lucasfilm, Ltd. for THX® installations

Rated Impedance

8 ohms

Minimum Impedance

7.2 ohms

Power Handling Capability


Continuous Pink Noise

800 W

Continuous Program

1600 W

Peak Power

3200 W

Output Capability


Axial Sensitivity

50 Hz to 500 Hz; 99 dB, 1W @ 1m
40 Hz to 100 Hz; 97 dB, 1W @ 1m

Power Compression


At -10 dB power (80 W)

0.6 db

At -3 dB power (400 W)

2.0 db

At rated power (800 W)

3.3 db

Net Weight

63 kg (138 lbs.)

Dimensions H x W x D

1010 mm x 674 mm x 450 mm
39,75 in x 26,6 in x 17,75 in

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Our office hours are 9:30am-5:30pm weekdays — please drop by, call us or fill in the contact form so we can reply to you shortly.

Magna-Tech Electronic Co., Inc.
329 Palermo Ave. 1st Floor
Coral Gables, FL 33134-6601 USA
Phone: (305) 573-7339
Fax: (305) 573-8101
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