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The SIGMA-X18B is a passive 18" bass-reflex subwoofer with a 2.5" voice coil at 4 Ω. It is rated 500 W continuous, 1000 W programme and 2000 W peak, with 100 dB sensitivity and a 133 dB maximum SPL in half space. The MDF cabinet is offered in black or white Tough-Tone paint.
| Active or Passive | Passive |
|---|---|
| System Type | Subwoofer |
| Configuration | Bass-reflex |
| System Continuous Power | 500 W |
| System Programme Power | 1000 W |
| System Peak Power | 2000 W |
| Max SPL @ 1m | 133 dB (Half Space) |
| Freq Response (+/-3 dB) | 35 Hz - 250 Hz |
| Freq Range (-10 dB) | 30 Hz - 250 Hz |
| Bluetooth | No |
| IP Certification | None |
| Driver Brand | Wharfedale Pro |
| LF Driver Size | 18" |
| LF Voice Coil Size | 2.5" |
| LF Rated Impedance | 4 Ω |
| LF Power (RE:AES2-2012) | 500 W |
| Preset Library | Yes |
| Input Connector | 2 x 4 Pole Speaker Connector, 1 x Barrier Strip |
| Enclosure Material | MDF |
| Grille Material and Finish | Steel Black or White |
| Finish | Black or White Tough-Tone paint |
| Handles | 4 |
| Deployment | Ground |
| Pole Mount | 35 mm |
| Brackets Included | No |
| Rigging | No |
| Sensitivity 2.83 V / 1 m | 100 dB |
| System Rated Impedance | 4 Ω |
| Crossover Frequency | 150 Hz |
| Recommended HPF = BW 18 dB/OCT. | 30 Hz |
| Transformer (T) | No |
| Included Accessory | Quick Start Guide |
| Unpacked - Height (mm) | 554 |
|---|---|
| Unpacked - Width Front (mm) | 502 |
| Unpacked - Width Rear (mm) | 502 |
| Unpacked - Depth (mm) | 780 |
| Packed - Height (mm) | 645 |
| Packed - Width Front (mm) | 597 |
| Packed - Width Rear (mm) | 597 |
| Packed - Depth (mm) | 875 |
| Weight - Nett (kg) | 40.6 |
| Weight - Gross (kg) | 44.8 |
Yes. Grille and finish are listed as black or white.
2 x 4-pole speaker connectors and 1 x barrier strip.
4.
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