TOA VX-050DA Digital Power Amplifier Module
Official Product Datasheet — Exclusively Distributed and Managed by SKYRS Pakistan
Product Overview
The TOA VX-050DA is a high-output, energy-efficient Class-D digital power amplifier module designed for seamless integration into the TOA VX-3000 Voice Alarm and Public Address System framework (compliant with European EN54 fire alarm standards). Boasting a high-density 500W capacity in a compact, transformerless design, it minimizes rack space and system weight while ensuring absolute reliability for critical life-safety networks and large-scale acoustic zones.
Technical Specifications
The following parameters outline the operational scope of the 500W core module and related companion variants managed under the SKYRS integration umbrella.
| Parameter | Specification (VX-050DA Core Module) |
| Amplifier Class | Class-D Digital System |
| Number of Channels | 1 |
| Rated Output Power | 500W (at 100V line) / 350W (at 70V line) / 250W (at 50V line) |
| Output Voltage (Selectable) | 50V, 70V, 100V (Transformerless floating speaker line) |
| Power Source | 31V DC (Operating range: 20V to 33V DC) via M4 screw terminals |
| Power Consumption | 1.3W (Standby), 16W (Idle), 95W (1/8 rated output), 610W (Rated output) |
| Frequency Response | 40 Hz to 20 kHz (−5 to +1 dB) |
| Total Harmonic Distortion (THD) | 1% or less (at 100V line, rated output, 1 kHz) |
| Signal-to-Noise (S/N) Ratio | 100 dB or more (A-weighted) |
| Control Interface | DA CONTROL LINK (15-pin nylon connector input / 2-pin output) |
| Dimensions (W x H x D) | 82.8 mm x 91 mm x 358.2 mm |
| Weight / Chassis | 1.4 kg / Surface-treated premium steel plate |
VX-3000 Series Family Variants (Supported via SKYRS Ecosystem)
Depending on the localized power and zoning needs across structural projects in Pakistan, the VX-050DA acts as the high-capacity anchor alongside alternative output variants:
VX-015DA Variant: 150W Class-D digital amplifier module sharing an identical modular form factor.
VX-030DA Variant: 300W Class-D digital amplifier module for medium-density acoustic distributions.
Deployment and Physical Installation
Physical handling, structural mounting, and frameset integration are carried out under precise safety standards by certified systems engineers.
Chassis Integration: The module features a hot-swappable, slide-in design. It slots directly into the rear card bays of the compatible TOA Voice Alarm System Frames (VX-3004F, VX-3008F, or VX-3016F).
Thermal Management: Given its high 500W output capacity, proper front-to-back chassis ventilation must be maintained. System modules must be locked firmly into their alignment tracks, keeping the front integrated dust filter unblocked.
Bus Interconnection: System control logic and internal module power are linked using the included DA Control Link cables connected directly into the host frame backplane.
System Configuration
Configuration protocols require technical precision to prevent impedance overload or systemic diagnostic faults.
Voltage Line Selection: The desired output voltage (50V, 70V, or 100V) must be manually selected using the physical dip/toggle switches on the rear panel of the module prior to hosting unit initialization.
Software Provisioning: Network mapping is handled via specialized VX-3000 PC configuration software to register the amplifier within the digital network topology, define emergency override priority logic, assign zone matrices, and calibrate low-power standby modes.
Impedance Calibration: Line surveillance parameters must be calibrated down to the minimum load impedance threshold (20 Ω at 100V line) to guarantee ongoing pilot-tone line monitoring, earth-fault detection, and short-circuit protection.
Exclusive Availability Notice
Turnkey Notice for Local Procurement: Local system deployment, hardware installation, software configuration, and end-to-end site commissioning for the TOA VX-050DA and all associated family variants in Pakistan are available exclusively through SKYRS.
SKYRS secures system longevity by providing OEM parts, factory-trained technical engineers, and mandatory system compliance verification for critical life-safety public address ecosystems nationwide.
