| Specification | Value |
|---|---|
| Active or Passive | Passive |
| System Type | Subwoofer |
| Configuration | Bass-reflex |
| System Continuous Power | 2000 W |
| System Programme Power | 4000 W |
| System Peak Power | 8000 W |
| Max SPL @ 1m | 148 dB (Half Space) |
| Freq Response (+/-3 dB) | 30 Hz - 1 kHz |
| Freq Range (-10 dB) | 25 Hz - 800 Hz |
| Bi-amp Mode Switch | No |
| Bluetooth | No |
| IP Certification | None |
| Driver Brand | Wharfedale Pro |
| LF Driver Size | 2 x 18" |
| LF Voice Coil Size | 4" |
| LF Rated Impedance | 2 x 8 Ω |
| LF Power (RE:AES2-2012) | 2 x 1000 W |
| Preset Library | Yes |
| Input Connector | 2 x 4 Pole Speaker Connector |
| Enclosure Material | Birch Plywood |
| Grille Material and Finish | Steel Black |
| Finish | Black Tough-Tone |
| Handles | 4 |
| Deployment | Ground |
| Pole Mount | None |
| Brackets Included | No |
| Rigging | No |
| Sensitivity 2.83 V / 1 m | 109 dB |
| System Rated Impedance | 4 Ω |
| Recommended HPF = BW 18 dB/OCT. | 25 Hz |
| Transformer (T) | No |
| Included Accessory | Quick Start Guide |
| Unpacked - Height (mm) | 560 |
| Unpacked - Width Front (mm) | 1065 |
| Unpacked - Width Rear (mm) | 1065 |
| Unpacked - Depth (mm) | 756 |
| Packed - Height (mm) | 650 |
| Packed - Width Front (mm) | 835 |
| Packed - Width Rear (mm) | 835 |
| Packed - Depth (mm) | 1150 |
| Weight - Nett (kg) | 81.5 |
| Weight - Gross (kg) | 87.7 |
REASON-X218B
Dual 18" sub-sub-subwoofer with 4" voice coils
REASON-X218B
Dual 18" sub-sub-subwoofer with 4" voice coils
REASON-X218B is a dual 18″ passive subwoofer from our REASON-X Series, designed to deliver immense low-frequency power with precision, depth, and authority.
Equipped with two custom Wharfedale Pro LF drivers, each featuring a 4.0″ voice coil, aluminium basket, and double-layer spider bonding, the REASON-X218B achieves exceptional strength, reduced harmonic distortion, and superior cooling efficiency. A heavier 112 g membrane and 31 mm coil cavity extend the low-end response, resulting in tight, controlled performance even under extreme load.
Constructed from premium birch plywood and finished with a thick steel grille, REASON-X218B is built for life on the road. Four integrated side handles make transport and setup simple, while its precision tuning ensures consistent results in touring or installation environments.
Handling 2000 W continuous (8000 W peak) power and producing up to 148 dB max SPL @ 1 m, the REASON-X218B delivers monumental sub-bass performance with unmatched control and impact.
OVERVIEW
| Name | Type | File |
|---|---|---|
| EASE Library V7.5 | Software | Download |
| REASON-X Series Data Sheets | Data Sheets | Download |
| REASON-X Series User Manual | User Manual | Download |
| REASON-X12 / REASON-X15 User Manual | User Manual | Download |
| REASON-X12 / REASON-X15 User Manual (German) | User Manual | Download |
| REASON-X18B / REASON-X218B User Manual | User Manual | Download |
| Wharfedale Pro Preset Library | Software | Download |
| Specification | REASON-X12 | REASON-X15 | REASON-X18B | REASON-X218B |
|---|---|---|---|---|
| Catch Line | 3-way design with PE HF compression driver | 3-way design with PE HF compression driver | 18" sub-sub-subwoofer with 4" voice coil | Dual 18" sub-sub-subwoofer with 4" voice coils |
| Active or Passive | Passive | Passive | Passive | Passive |
| System Type | Full-Range | Full-Range | Subwoofer | Subwoofer |
| Configuration | 3-way | 3-way | Bass-reflex | Bass-reflex |
| System Continuous Power | 500 W | 600 W | 1000 W | 2000 W |
| System Programme Power | 1000 W | 1200 W | 2000 W | 4000 W |
| System Peak Power | 2000 W | 2400 W | 4000 W | 8000 W |
| Max SPL @ 1m | 131 dB | 133 dB | 139 dB | 148 dB |
| Freq Response (+/-3 dB) | 55 Hz - 20 kHz | 45 Hz - 20 kHz | 35 Hz - 1 kHz | 30 Hz - 1 kHz |
| Freq Range (-10 dB) | 50 Hz - 20 kHz | 40 Hz - 20 kHz | 30 Hz - 800 Hz | 25 Hz - 800 Hz |
| Driver Brand | Wharfedale Pro | Wharfedale Pro | Wharfedale Pro | Wharfedale Pro |
| LF Driver Size | 12" | 15" | 18" | 2 x 18" |
| LF Voice Coil Size | 3" | 3" | 4" | 4" |
| LF Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 2 x 8 Ω |
| LF Power (RE:AES2-2012) | 400 W | 500 W | 1000 W | 2 x 1000 W |
| MF Driver Size | 8" | 8" | ||
| MF Voice Coil Size | 2" | 2" | ||
| MF Rated Impedance | 8 | 8 | ||
| MF Power (Re:AES2-2012) | 100 W | 100 W | ||
| HF Driver Type | Compression Driver | Compression Driver | ||
| HF Voice Coil Size | 1.5" | 1.5" | ||
| HF Diaphragm Material | PEN | PEN | ||
| HF Exit Size | 1" | 1" | ||
| HF Power (RE:AES2-2012) | 40 W | 40 W | ||
| HF Rated Impedance | 8 Ω | 8 Ω | ||
| Preset Library | Yes | Yes | Yes | Yes |
| Input Connector | 2 x 4 Pole Speaker Connector | 2 x 4 Pole Speaker Connector | 2 x 4 Pole Speaker Connector | 2 x 4 Pole Speaker Connector |
| Waveguide Type | Constant Directivity / Rotatable | Constant Directivity / Rotatable | ||
| Enclosure Material | Birch Plywood | Birch Plywood | Birch Plywood | Birch Plywood |
| Grille Material and Finish | Steel Black | Steel Black | Steel Black | Steel Black |
| Finish | Black Tough-Tone | Black Tough-Tone | Black Tough-Tone | Black Tough-Tone |
| Handles | 2 | 2 | 2 | 4 |
| Deployment | Flying, Ground, Pole | Flying, Ground | Ground | Ground |
| Pole Mount | 35 mm | 35 mm | ||
| Rigging | Yes | Yes | ||
| M8 | 12 | 12 | ||
| Nominal Coverage (H x V) | 100° x 70° | 100° x 70° | ||
| Sensitivity 2.83 V / 1 m | 98 dB | 99 dB | 103 dB | 109 dB |
| System Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 4 Ω |
| Crossover Frequency | 800 Hz / 2.7 kHz | 800 Hz / 2.7 kHz | ||
| Recommended HPF = BW 18 dB/OCT. | 50 Hz | 40 Hz | 30 Hz | 25 Hz |
| Included Accessory | Quick Start Guide | Quick Start Guide | Quick Start Guide | Quick Start Guide |
| Unpacked - Height (mm) | 814 | 883 | 600 | 560 |
| Unpacked - Width Front (mm) | 350 | 430 | 560 | 1065 |
| Unpacked - Width Rear (mm) | 231 | 298 | 560 | 1065 |
| Unpacked - Depth (mm) | 410 | 455 | 756 | 756 |
| Packed - Height (mm) | 924 | 966 | 680 | 650 |
| Packed - Width Front (mm) | 445 | 525 | 650 | 835 |
| Packed - Width Rear (mm) | 445 | 525 | 650 | 835 |
| Packed - Depth (mm) | 505 | 550 | 850 | 1150 |
| Weight - Nett (kg) | 29.3 | 33 | 53.4 | 81.5 |
| Weight - Gross (kg) | 32.3 | 36.8 | 55.2 | 87.7 |