Subwoofer Cabinet
Subwoofer
SR-U218W / SR-U218WA-DSP
Dual 18″ bass-reflex subwoofer — passive or active with DSP.
A dual 18-inch bass-reflex subwoofer for the deepest, highest-output low end in the range. Two 100mm voice-coil woofers sit in a multilayer composite plywood cabinet finished in wear-resistant polyurea paint. The SR-U218WA-DSP is the active version, with two amplifier channels on board.
1200 W
RMS
4800 W
Peak
103 dB
Sensitivity
140 dB
Peak SPL
2×18″
Drivers
Features
01
Twin 18-inch drivers
Two 100mm voice-coil woofers deliver 134dB continuous SPL from a single cabinet.
02
Bass-reflex loading
Tuned reflex alignment for full, powerful output down to 35Hz.
03
Passive or DSP-active
The DSP version carries two amplifier channels of 1200 W / 4Ω each.
04
Tour-grade construction
Multilayer composite plywood with wear-resistant polyurea paint.
Specifications — SR-U218W / SR-U218WA-DSP Range
| Specification | SR-U218W | SR-U218WA-DSP |
|---|---|---|
| Frequency response (−3 dB) | 35 Hz–300 Hz | 35 Hz–300 Hz |
| Drivers | 2 × 18″ (460 mm), 4″ voice coil | 2 × 18″ (460 mm), 4″ voice coil |
| Rated power | 1200 W RMS, 4800 W peak | 1200 W / 4 Ω + 1200 W / 4 Ω |
| Sensitivity | 103 dB, 1 W / 1 m | — |
| Maximum SPL | 134 dB cont., 140 dB peak | 134 dB cont., 140 dB peak |
| Impedance | 4 Ω nominal | — |
| Input connectors | 2 × Speakon NL4 | Balanced differential line |
| Package size | 1272 × 872 × 658 mm | 1272 × 872 × 658 mm |
| Net weight | 82 kg per piece | 84 kg per piece |
| Gross weight | 90 kg per piece | 92 kg per piece |
This product was originally filed under Ceiling Speakers in the source archive but is a subwoofer by specification — relocated to the correct category. All figures are nominal, per manufacturer data.
Applications