VTX系列双18英寸低音炮采用两个2269H 18英寸换能器，配备差分驱动技术、双音圈、双钕磁铁和极高的峰峰值偏移能力，可提供扩展的极低频性能。
VTX S28可吊装或堆叠放置，在两种配置下均可进行心形指向阵列配置，以提高后向抑制效果。与VTX V25吊装兼容，S28可吊装在V25阵列顶部，延伸有效低频线长度，在心形模式下提供改善的垂直指向控制和更好的后向抑制效果。
或者，S28阵列（心形或前向发射）可吊装在V25阵列的旁边或后方。对于剧院音响设计，S28可吊装在V25吊装阵列的中间，通过改善阳台下方的穿透力来促进包厢和楼层覆盖。较大的心形配置也很有效，其中S28以多个心形块的形式吊装或堆叠放置，每个块包含3个箱体（2个前向发射，1个后向发射）。
JBL 独有的双音圈、双磁隙差分驱动技术是所有 VTX 型号的核心，大幅降低驱动器重量，同时显著提升所有关键性能参数：频率响应、功率输出和失真。
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JBL 独有的双音圈、双磁隙差分驱动技术是所有 VTX 型号的核心，大幅降低驱动器重量，同时显著提升所有关键性能参数：频率响应、功率输出和失真。
了解更多
JBL Professional 不仅设计业界最先进的声音强化系统，还提供专业技术支持，帮助您获得最高的系统性能。我们拥有超过 65 年在全球各类场馆中的系统应用经验，这一宝贵资源成为我们培训课程的核心，帮助您最大化 VTX 系统的使用效果和投资价值。
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| 系统类型 | Full Size Suspendable, Cardioid-Arrayable, Dual 18" Subwoofer with Ultra Long Excursion Transducers |
| 频率范围 (-10dB) | 29 Hz - 90 Hz (Preset: VTX S28 80) |
| Coverage | Omnidirectional or Cardioid |
| Maximum Peak Output | 139dB (Preset: VTX S28 80) |
| System Amplification | Crown Audio I-Tech HD |
| 系统阻抗 | 2x 8 ohms |
| 低频驱动单元 | (2) JBL 2269H 18-inch Neodymium Differential Drive® woofer |
| Enclosure | Finnish birch plywood, Black DuraFlex finish, ten integral recessed handles |
| Inter-Enclosure Angles | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 |
| 尺寸（高 x 宽 x 厚） | 493 mm x 1222 mm x 926 mm 19.4 in x 48.1 in x 36.5 in |
| Net Weight (each) | 83.0 kg (183 lb) |
VTX V25 AF Specsheet
[561.7 KB]
VTX V25 AF 2D Drawing
[123.1 KB]
VTX V25 AF 3D Drawings
[2.2 MB]
VTX V25 AF EB Specsheet
[698.9 KB]
VTX V25 AF EB 3D Drawing
[5.4 MB]
VTX V25 AF EB 2D Drawings
[265.9 KB]
VTX S28 VT CVR Specsheet
[468.8 KB]
VTX S28 VTC Specsheet
[1.5 MB]
VTX S28 ACC Specsheet
[769.1 KB]
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版本 1.1,
更新: 10月 2023
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