Dual 18" Subwoofer - Suspendable
VTX series dual 18" subwoofers employ two 2269H 18" transducers featuring Differential Drive technology with two voice coils, two neodymium magnets and extremely high peak-to peak excursion capabilities to deliver extended very low frequency performance.
The VTX S28 can be suspended or ground-stacked and is cardioid-arrayable in either configuration for improved rear rejection. Compatible with VTX V25 suspension, S28 can be suspended at the top of V25 arrays to extend the effective low frequency line length, providing improved vertical pattern control combined with improved rear rejection when used in cardioid mode.
Alternatively, S28 arrays (cardioid or front-firing) can be suspended beside or behind V25 arrays. For theatrical sound design, S28 can be suspended in the middle of flown V25 arrays to facilitate balcony and floor coverage by allowing improved underbalcony penetration. Larger cardioid configurations are also effective where S28 is suspended or ground-stacked in multiple cardioid blocks, each block consisting of 3 enclosures (2 front-firing, 1 rear-firing).
| Version | Language | Size | Uploaded | |
Specifications | ||||
 VTX S28 Spec Sheet updated: Dec 2020 | 538 KB | Dec 2020 | ||
Manuals | ||||
| VTX Subwoofer Wiring Guide
| 1.1 |  | 7.54 MB | Oct 2023 |
| VTX S28 Spare Parts
| A | | 67.7 KB | Oct 2023 |
Brochures | ||||
| VTX V25 System Brochure updated: Dec 2020 | 6.48 MB | Dec 2020 | ||
CAD Drawings | ||||
 VTX S28 3D Drawings updated: Dec 2020 | 3.36 MB | Dec 2020 | ||
| VTX G28/S28 2D Drawings updated: Dec 2020 | 185 KB | Dec 2020 | ||
Compliances | ||||
| VTX V-Series Declaration of Conformity updated: Dec 2020 | 158 KB | Dec 2020 | ||
Software | ||||
| Venue Synthesis updated: Jul 2024 | Jul 2024 | |||
| Performance Manager 3 updated: Jul 2024 | Jul 2024 | |||
Ease Data | ||||
| VTX V25-II/S28 EASE GLL version 1.2, updated: Dec 2020 | 1.2 | 29.8 MB | Dec 2020 | |
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| System Type | Full Size Suspendable, Cardioid-Arrayable, Dual 18" Subwoofer with Ultra Long Excursion Transducers |
| Frequency Range (-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 |
| System Impedance | 2x 8 ohms |
| LF Driver | (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 |
| Dimensions (H x W x D) | 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) |
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Array Frame used for suspending or ground stacking VTX V25 series enclosures. The VTX-V25-AF is also compatible with the VTX S28 dual 18” subwoofer enclosures. Includes height-adjustable leveling feet for ground stack applications. Optional VTX-V25-AF-EB extension bar available.
Features:
- Compatible with VTX V25, VTX V25-CS, VTX V25-II, VTX V25-II-CS and VTX S28
- 9 pick points available for single point suspension
- Optional Extension Bar available
- Flexible front-to-back or side-by-side pick point options
- Supports up to 24 cabinets (array geometry dependent)
- Can be used for ground stack applications
- Pick point shackle size: 5/8” or 3/4”
Included:
- 1 x VTX-V25-AF
- 4 x height-adjustable leveling feet for ground stack applications
- 4 x Quick Release Pins (QRP) for securing top enclosure to the frame
Documentation
-
VTX V25 AF Specsheet [562 KB] - VTX V25 AF 2D Drawing [123 KB]
- VTX V25 AF 3D Drawings [2.23 MB]
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Extension Bar accessory used in conjunction with the VTX-V25-AF array frame for deploying VTX V25 series systems in either compression or tension mode. Five extension bar attachment options provide variable pick point separation (2-point suspension) and added flexibility for single point suspension. The extension bar can be front- or rear-mounted for increased array up-tilt or down-tilt, respectively. When rear-mounted, provides an attachment point for compression suspension. A single extension bar can be installed in the array frame central tube, or alternatively, a pair of extension bars can be front or rear-mounted in left/right array frame tubes. Single or dual extension bars can also be front- or rear-mounted in ground stack applications for extra stability and a wider range of array tilt angle options. Dual extension bars can also be front-and rear-mounted for compression suspension when increased array up-tilt is required.
Features:
- Compatible with VTX-V25-AF
- 2 x pick points available for single point suspension
- 1 x pick point available for VTX-V25-LH level hoist attachment
- Supports up to 24 cabinets (array geometry dependent)
- Pick point shackle size: 5/8” or 3/4”
Included:
- 1 x VTX-V25-AF-EB extension bar
- 1 x height-adjustable leveling foot for ground stack applications
- 2 x Quick Release Pins (QRP) for securing the extension bar to the array frame
Documentation
- VTX V25 AF EB Specsheet [699 KB]
- VTX V25 AF EB 3D Drawing [5.36 MB]
- VTX V25 AF EB 2D Drawings [266 KB]
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Reinforced, padded protective cover for 3x VTX V28 enclosures in either front-firing or cardioid mode when transported vertically.
Features:
- Handle cutouts, heavy-duty zippers
- Modular design, can be used with 3x VTX V28 in normal front-firing configuration or 3x VTX V28 in cardioid mode
- Rear panel access flaps for input connectors
- Speaker cabinets can be tested without fully removing the cover
- Lightweight, durable construction
Included:
- 1 x VTX-V28-VT-CVR
Documentation
- VTX S28 VT CVR Specsheet [469 KB]
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The VTX-V28-VTC vertical transporter is a simple and cost-effective solution for vertically transporting VTX V28 enclosures in blocks of 3x cabinets high. When transported in blocks of 3x S28, cabinets can be configured in either front-firing or cardioid mode. Measuring 48” wide by 37” deep, the VTX-S28-VTC will travel 2 across (width-wise) in standard 100” trucks. Reinforced protective covers (VTX-S28-VT-CVR) supplied separately.
Features:
- Vertical transporter for S28 enclosures (front-firing or cardioid mode)
- Heavy duty locking casters
- Stackable for easy storage
- Dimensioned for efficient truck pack
- Lightweight, rugged construction
Included:
- 1 x VTX-V28-VTC
Documentation
- VTX S28 VTC Specsheet [1.51 MB]
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VTX Series S28 Accessory Kit for transportation and protection of one VTX S28 enclosure. Includes: padded, reinforced protective cover with handle cutouts and rear panel access flap; dolly caster-board with rugged tour grade casters and rotating cam mechanisms for secure attachment to the S28 enclosure. Beveled recesses auto-locate with S28 caster board mount tabs. The rotating cam mechanism can be released while S28 cabinets are face down during the suspension process (no need to manually remove caster board).
Features:
- Includes padded protective cover and caster-board
- Handle cutouts and rear panel access flap
- Speaker cabinets can be tested without fully removing the cover
- Tour grade casters
- Stackable for convenient storage
- Rotating release/lock cam mechanisms for secure attachment to S28 enclosures
Included:
- 1 x VTX S28 caster-board
Documentation
- VTX S28 ACC Specsheet [769 KB]
