4642A Dual 460 mm (18 in.)Subwoofer System

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4642A Dual 460 mm (18 in.) Subwoofer System

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.


  • 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


  Version Language Size Uploaded
file type icon 4642a Spec Sheet
updated: ต.ค. 2020
    158 กิโลไบต์ ต.ค. 2020
file type icon 4000 Series Declaration of Conformity
updated: ต.ค. 2020
    33.4 กิโลไบต์ ต.ค. 2020
file type icon Cinema Sound - 4000 Series Declaration of Conformity
updated: ต.ค. 2019
    144 กิโลไบต์ ต.ค. 2019
Tech Notes
file type icon Tech Note: Polarity Conventions
updated: ต.ค. 2019
    55 กิโลไบต์ ต.ค. 2019
Information documents
file type icon Cinema CD
updated: ต.ค. 2019
    21.9 เมกะไบต์ ต.ค. 2019

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Parts & Service


Frequency Range (±3 dB) 22 Hz - 100 Hz
Frequency Range (-10dB) 20 Hz - 500 Hz
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
Axial Sensitivity 50 Hz to 500 Hz; 101 dB, 1W @ 1m 40 Hz to 100 Hz; 100 dB, 1W @ 1m
Net Weight (each) 216 lbs (98 kg)
Dimensions (H x W x D) 762 mm x 1219 mm x 610 mm 30 in x 48 in x 24 in
Power Handling (2Hr AES Rating) 1200 W
Sensitivity 100 dB
Maximum SPL (1m) 131 dB
Nominal Impedance 2 x 8Ω



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4642A Dual 460 mm (18 in.)Subwoofer System