JBL 4642A Dual 460mm (18-Inch) Subwoofer System
Model: 4642A
About: JBL 4642A Dual 460mm (18-Inch) Subwoofer System
The JBL 4642A is a high quality subwoofer system, featuring a technologically advanced 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. The 2241H transducer utilizes the patented Vented Gap Cooling (VGC) process*, which pumps air through the magnetic gap and directly over and around the voice coil, providing immediate heat transfer and a reduction in operating temperature. This increases power handling while reducing power compression. Through the use of computer-aided magnet optimization and analysis techniques, JBL engineers were able to optimize magnet weight, flux density and field saturation, resulting in a 2.6 kg (6.5 lb) reduction in overall driver weight and a significant reduction in harmonic distortion. This magnet structure offers much of the weight advantage of rare earth magnet structures without the prohibitive cost, enabling the system to carry a 600-watt continuous AES pink noise power rating.
Features
- 950 W (60 Vrms) AES 100-hour rating; 1200 W (69 Vrms) AES 2-hour rating
- Usable response to 22 Hz (-10 dB) with no EQ; flat to 22 Hz (-3 dB) with external EQ
- 2241H VGC (Vented Gap Cooled) drivers provide long peak-to-peak excursion, high sensitivity and high maximum SPL capability
- SFG (Symmetrical Field Geometry) magnet structure for low 2nd and 3rd harmonic distortion
- Approved by Lucasfilm, Ltd. for THX installations
Specifications
- 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
- Output Capability - -
- Axial Sensitivity - 50 Hz to 500 Hz; 101 dB, 1W @ 1m 40 Hz to 100 Hz; 100 dB, 1W @ 1m
- Power Handling (2Hr AES Rating) - 1200 W
- Sensitivity - 100 dB
- Maximum SPL (1m) - 131 dB
- Nominal Impedance - 2 x 8Ω
- Net Weight (each) - 216 lbs (98 kg)
- Dimensions (HxWxD) - 30 x 48 x 24 inch (762 mm x 1219 mm x 610 mm)
Reviews: JBL 4642A Dual 460mm (18-Inch) Subwoofer System
Warranty: JBL 4642A Dual 460mm (18-Inch) Subwoofer System
AVShop.ca Warranty:
30 Days
Manufacturer's Warranty:
Pro Products:
The warranty on JBL professional loudspeaker products (except for enclosures, electronic components, and portable products) is valid for 5 years from the date of the first consumer purchase. Enclosures and electronic components are warranted for 1 year from the date of original purchase.
Extended 7 Year Warranty
- EON ONE Compact
- EON700 Series
- EON ONE MK2
- PRX ONE
Note: The extended warranty program applies to all product components, except batteries, which continue to include a robust, three-year warranty.
Manufacturer's Warranty will cover parts, labour and return shipping back to you once repaired. Shipping into the service centre is not covered
For Quebec Residents - Disclosure under the Consumer Protection Act
In compliance with Bill 29, AVShop.ca and JBL do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Any applicable manufacturer warranties will remain in place.
