Description
The JBL ASB4128 is a medium-power subwoofer system with 2 x 18-inch / 460 mm low-frequency drivers in a front-loaded, vented configuration. Its deep rectangular cabinet helps deliver extended low-frequency bandwidth while keeping the frontal profile compact.
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Key Features
- Dual 18-inch subwoofer
- 2 x JBL 2042H low-frequency drivers
- Front-loaded, vented cabinet design
- Large vent area for high output with low distortion
- Parallel / Discrete switchable input mode
- Extended low-frequency bandwidth
- M10 threaded suspension points
- Black DuraFlex™ finish
- Suitable for professional fixed installation
Technical Specification
- Speaker Type: Passive subwoofer
- System Type: Medium-power dual 18-inch subwoofer
- LF Driver: 2 x JBL 2042H, 460 mm / 18 inch drivers
- LF Voice Coil: 75 mm / 3 inch
- Frequency Range: 30 Hz – 1 kHz
- Frequency Response: 40 Hz – 1 kHz
- Input Modes: Drivers Parallel / Drivers Discrete
- Transducer Power Rating: 1000 W / 4000 W peak, 2 hours
- Long-Term System Power Rating: 600 W / 2400 W peak, 100 hours
- Maximum SPL 30 Hz – 100 Hz: 133 dB continuous / 139 dB peak
- Maximum SPL 100 Hz – 500 Hz: 133 dB continuous / 139 dB peak
- System Sensitivity 30 Hz – 100 Hz: 103 dB
- System Sensitivity 100 Hz – 500 Hz: 103 dB
- Nominal Impedance Parallel Mode: 4 ohms
- Nominal Impedance Discrete Mode: 2 x 8 ohms
- Enclosure: Rectangular cabinet
- Cabinet Material: 16 mm exterior-grade 11-ply Finnish birch plywood
- Suspension Attachment: 12 x M10 threaded points
- Finish: Black DuraFlex™ finish; white available upon request
- Grille: Powder-coated 14-gauge perforated steel grille with black foam backing
- Input Connector: NL4 Neutrik Speakon® and covered barrier strip terminals
- Environmental Rating: Mil-Std 810; IP-x3 per IEC529
- Dimensions: 1094 x 561 x 816 mm
- Net Weight: 64.9 kg / 143 lb
