Guangzhou DUBAO Electronics Technology Co., Ltd.
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Dual 18 Inches Conference Audio System SB28 Loud Bass Subwoofer
SB28
The system shall consist of a subwoofer enclosure driven and protected by a dedicated amplified controller.
The subwoofer shall feature two 18" weather-resistant low-frequency cone drivers with a massive vented structure, mounted in a bass-reflex tuned enclosure.
The LF limit shall be 25 Hz (-10 dB).
The subwoofer shall be used in standard or cardioid configuration.
The maximum SPL shall be 142 dB (peak level at 1 m under half space conditions using pink noise with crest factor 4). The long term RMS handling capacity shall be 1225 W at the nominal impedance of 4 Ω.
The subwoofer cabinet construction shall consist of first grade Baltic birch plywood. The dimensions shall be 550 mm (21.7 in) height, 1300 mm (51.2 in) width, and 700 mm (27.6 in) depth. The subwoofer weight shall be 93 kg (205 lb). The front of the subwoofer shall be protected by a steel grill with anti-corrosion coating covered with acoustically neutral 3D fabric.
The subwoofer shall feature integrated rigging rails and shall be flown with dedicated rigging accessories. The subwoofer shall be connected via one 4-point speakON connector.
The SB28 enclosure is a recommended subwoofer companion, lowering the combined system operating range down to 25 Hz.
The performance of the SB28 enclosure depends upon the choice of preset and physical system configuration.
Made of high grade Baltic birch plywood, the cabinet also features industry standard Aeroquip ® rails for line array rigging.
| Model | SB28 |
| Color | Black |
| TYPE | Sub-Woof Loudspeaker |
| Frequency Response | 35Hz-300Hz(+/-3dB) |
| LF Driver | 18”×2(220 Magnet 100mm) |
| Rated Power | 1600W |
| Peak Power | 6400W |
| Impedance | 4Ω |
| Sensitivity(1w/1m)dB | 103dB |
| Maximum SPL | 135 dB |
| Cabinet Construction | 18mm Plywood+18mm MDF |
| Cabinet Finish | Polyurethane Coating |
| Connectors | 2×NL4R Speakon |
| Cabinet Dimension(mm) | L1300×H700×W560 |
| Net Weight(Kg) | 64kg |
