B218
B218 低频模块采用两只高磁力 18″ 驱动单元耦合设计，搭载计算机优化的对称低频号筒负载结构，以确保即使在极高音量下仍能保持超低失真。
B218 采用 15 mm 定制弯曲胶合板箱体（内层杨木饰面，外层桦木饰面）。其重量为 77 kg/170 lbs，峰值声压级可达 146 dB。低频号筒可确保最大的辐射表面级和高效率。
B218 配备四个大型舒适侧把手与一个后置把手，结合专用轮式运输板与防护罩，可轻松操作。
主要特点
- Alpha+ 系统低频模块非常强大（峰值声压级 146 dB）
- 采用 15 mm 定制桦木与杨木复合弯曲胶合板，占地面积小
- 圆形外形可防止边角损坏，并符合 Alpha+ 系统设计
- 低频号筒可确保最大的辐射表面级和高效率
产品参数
| With NEXO Processing | |
| Frequency Response @-6 dB | 75 Hz to 160 Hz |
| Peak SPL@1m | 146 dB Peak |
| Operating Voltage | 65 Vrms (180 Vpeak) |
| Crossover Frequency | 75 Hz |
| Nominal Impedance | 4 Ohms |
外观特征
| Components | 2 x Neodymium 18” 8 Ohms |
| Connectors | 2 x NL4, 4 poles connectors |
| Rigging points | 2 x universal accessory fit (on each side) + 1 x M20 thread for Pole Stand on top |
| Material | Custom made bent plywood of baltic birch and poplar |
| Finish | Black or White structural paint |
| Front Finish | Magnelis® Steel front grille |
| Height x Width x Depth | 594mm x 755mm x 905 mm (23.4” x 29.7” x 35.6”) |
| Weight: Net | 77 kg (170 lbs) |
| Operating temperature range | 0°C - 40 °C (32° F - 104° F) |
| Storage temperature range | -20 °C - 60 °C (-4 ° F - 140° F) |
| System Operation | |
| Powering solution | NXAMP4x4mk2 Powered TDcontroller: Up to 2 x B218 per channel |
| Optional powering solution | NXAMP4x1mk2 Powered TDcontroller (Bridged): Up to 2 x B218 per bridged channels |
