4645C Single 460 mm (18 in.) Subwoofer System


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


  Version Language Size Uploaded
4645c Spec Sheet
updated: 4月29日
    155.8 KB 4月29日
4000 Series Declaration of Conformity
updated: 4月29日
    33.4 KB 4月29日
Cinema Sound - 4000 Series Declaration of Conformity
updated: 10月18日
    144.3 KB 10月18日
Tech Notes
Tech Note: Polarity Conventions
updated: 10月18日
    55.0 KB 10月18日
Information Documents
Cinema CD
updated: 10月18日
    21.9 MB 10月18日

If any of the links above result in strange characters in your browser, please right-click the file to save it to your computer.


额定阻抗 8 ohms
Minimum Impedance 7.2 ohms
Power Handling Capability -
Continuous Pink Noise 800 watts
Continuous Program 1600 watts
Peak Power 3200 watts
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 (each) 63 kg (138 lbs.)
尺寸(高 x 宽 x 厚) 1010 mm x 674 mm x 450 mm 39¾ in x 26½ in x 17¾ in
Frequency Response (-10dB) 20-500 Hz
Frequency Response (±3 dB) 22-100 Hz
Power Handling (2Hr AES Rating) 800 W
Sensitivity (1W, 1m) 97 dB
Maximum SPL (1m) 128 dB
标称阻抗 8 Ohms