SUBWOOFERS

JBL 4641

Introduction
Features
Specifications

Introduction

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.

Features

Specifications

Introduction
Features
Specifications

Features

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

Introduction

Specifications

Introduction
Features
Specifications

SPECIFICATIONS

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
Distortion	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