Vonyx VXA-1500 - 2x750W Rackmount PA Power Amplifier
The Vonyx VXA-1500 is positioned as a robust and affordable solution in the world of professional amplification, designed to deliver remarkable power without compromising audio fidelity. This stereo power amplifier stands out for its ability to deliver up to 2 x 750W at 4 Ohms , making it the ideal engine for sound systems in mobile discos, bars, clubs, and medium-sized live setups. Its construction incorporates advanced SMT (Surface Mount Technology) , a component assembly process that not only reduces the overall weight of the unit but also ensures superior circuit stability and greater resistance to vibrations typical of transport and intensive use.
Beyond its raw power, the VXA-1500 has been engineered with connectivity versatility and signal clarity in mind. It offers extremely low noise and a wide frequency response spanning from 10Hz to 20kHz, ensuring that both deep bass and crystal-clear treble are reproduced with precision. Its design includes a standard 19-inch rack -mount chassis, occupying 2U of height, making it easy to integrate into flight cases or fixed installation cabinets. With flexible configuration options, including bridge mode, this amplifier adapts to the changing needs of any event, allowing power to be pooled into a single mono channel when driving high-demand passive subwoofers.
Main features
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Versatility of Modes: Allows operation in standard stereo mode for two speaker configurations or in bridge mode to unify the power into a mono output of up to 1500W at 8 Ohms.
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Universal Connectivity: The rear panel is equipped with inputs via RCA and 6.3 mm jack connectors, facilitating direct connection to mixing consoles, DJ controllers or audio interfaces.
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Multiple Outputs: To send the signal to the speakers, it offers three types of connection: NL locking connectors (compatible with Speakon), 6.3 mm jack and screw/banana terminals, ensuring compatibility with almost any existing passive wiring.
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Protection Systems: Incorporates "Clip" LED indicators that visually warn of signal spikes to prevent distortion, as well as DC output protection to safeguard connected speakers.
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Noise Management: Includes a Ground Lift switch that helps eliminate annoying ground loops and hums that often appear in complex electrical installations.
Benefits for the user
The implementation of SMT technology in the Vonyx VXA-1500 translates directly into greater long-term reliability . By reducing internal wiring and soldering components directly to the board, potential points of failure are minimized—crucial for mobile DJs and technicians who constantly move their equipment. Furthermore, the flexibility of its output connections eliminates the need for expensive adapters; you can arrive at an event and connect your speakers regardless of whether they use bare wire or professional locking connectors.
For the installer or sound technician, the ability to easily switch between stereo and bridged offers a tactical advantage: the same amplifier can power two stage monitors today and drive a center subwoofer tomorrow, maximizing the investment in equipment.
Use cases
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Mobile DJs and Mobile Discos: Ideal for rack transport due to its optimized weight-to-power ratio and vibration resistance.
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Fixed Installations: Perfect for music bars, pubs and restaurants that require powerful background music or dance areas on a controlled budget.
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Conference Rooms and Classrooms: To amplify voice and multimedia content clearly and without background noise.
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Stage Monitoring: Usable by bands to feed passive monitoring wedges thanks to its flat and direct response.
Frequently Asked Questions
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Can I connect a subwoofer to this amplifier?
Yes, the amplifier has a "Bridge" mode that is ideal for connecting a passive subwoofer, adding the power of both channels to deliver up to 1500W at 8 Ohms.
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Is it compatible with 8 Ohm speakers in stereo mode?
Absolutely. Although the maximum power is indicated at 4 Ohms (750W), it will work perfectly with 8 Ohm speakers, delivering slightly less power but with excellent thermal stability.
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Does it require special ventilation?
As with any professional power amplifier, it is recommended not to obstruct the ventilation grilles. If rack-mounted, its 2U design allows for adequate airflow, but it is always advisable to leave some space if using it at maximum performance for extended periods.
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What does the Ground Lift switch mean?
This function disconnects the audio signal ground from the chassis to break ground loops. If you hear a low-pitched hum (hum) in your speakers, turning this switch on usually solves the problem instantly.
Project description
2-channel stereo power amplifier in a 19" (2U) rackmount format, featuring SMT technology for high stability. It delivers 2 x 750W output at 4 ohms and 1500W bridged at 8 ohms. Frequency response is 10Hz to 20kHz with a signal-to-noise ratio exceeding 90dB. Inputs include RCA and 6.3mm jack connectors, and versatile speaker outputs via NL connectors, 6.3mm jack connectors, and screw terminals. Additional features include a ground lift switch, DC output protection, and clip/signal indicator LEDs. Approximate weight is 7.55 kg and dimensions are 482 x 295 x 88 mm.
