JBL 4641
JBL 4641

JBL 4641 Single 460 mm (18 in) Subwoofer System. The JBL Model 4641 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 4641 is ideal for low-frequency augmentation of either analog or digital soundtracks in motion picture theaters and for general sound reinforcement applications.

  • 600 Watts Continuous Pink Noise, 1200 Watts Continuous Program Power Handling
  • Usable response to 25 Hz (-10 dB, no EQ), flat to 25 Hz (-3 dB) with External EQ
  • 2241H VGCTM Vented Gap Cooled Driver (High Sensitivity, Low Power Compression, High Maximum-SPL Capability, Low 2nd and 3rd Harmonic, Distortion, Symmetrical Field Geometry SFGTM, Magnet Structure, Long Excursion Capability)
  • Approved by Lucasfilm, Ltd. for THX® installations

Rated Impedance

8 ohms

Minimum Impedance

6.3 ohms

Continuous Pink Noise

600 Watts

Continuous Program

1200 Watts

Peak Power

2400 Watts

Axial Sensitivity

50 Hz to 500 Hz; 98 dB, 1W @ 1m
40 Hz to 100 Hz; 97 dB, 1W @ 1m

Power Compression At -10 dB power (60 W)

0,8 db

Power Compression At -3 dB power (300 W)

2,6 db

Power Compression At rated power (600 W

4,3 db

Half-Space Reference Efficiency

Single module 2,9%
Two modules 5,8
Four modules 8,7%
Eight modules 11,6%

Max. Continuous Acoustical Power Output

Single module 17W
Two modules 70W
Four modules 209W
Eight modules 557W

Recommended Crossover Frequencies

High-pass: 20 Hz, 24 dB/octave or greater
Low-pass: 80 Hz to 150 Hz, 12 dB/octave or greater

Lower Frequency Limits (no EQ)

-10 dB: 25 Hz
-3 dB: 35 Hz

Lower Frequency Limits (with EQ)

-10 dB: 22 Hz
-3 dB: 25 Hz


2nd harmonic: <2%
3rd harmonic: <2%

System Polarity

EIA Standard. Positive voltage to RED terminal
produces forward cone motion

Input Connectors

Color-coded push terminals

Net Weigh

60 kg (131 lbs.)

Enclosure Tuning Frequency

25 Hz

Net Internal Volume

225 liters (8 cu. ft)

Dimensions (HxWxD)

1010 mm x 674 mm x 450 mm
39,75 in x 26,5 in x 17,75 in

Let us follow up
with you
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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