The PA-X4 12-inch 4-Way Line Array Tri-Amp system by GM Audio is a powerful and meticulously engineered professional loudspeaker designed for long-throw performance and wide-area coverage. Built to meet the demands of large-scale live sound reinforcement, touring productions, auditoriums, churches, stadium events, and high-end installations, the PA-X4 combines advanced acoustic design with premium components to deliver clarity, precision, and exceptional output power. With a total program power rating of 3650 watts, this heavy-duty system is built to perform consistently under high sound pressure levels while maintaining tonal balance and reliability.

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At the heart of the PA-X4 is a sophisticated 4-way acoustic design operating in a tri-amplified configuration. This architecture allows separate amplification control for low, mid, and high frequency sections, enabling precise tuning, improved efficiency, and reduced distortion. By dedicating specific amplification channels to each frequency band, the system achieves better headroom, improved dynamic response, and optimized crossover management. This design ensures that each driver operates within its ideal frequency range, enhancing overall sonic performance and longevity.

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The low-frequency section features dual 12W750 ferrite drivers, each capable of handling 1200 watts of power. These drivers are known for their robust construction and high efficiency, offering a sensitivity rating of 97 dB SPL at 1W/1m. The 75 mm (3-inch) Interleaved Sandwich Voice Coil (ISV) design enhances thermal stability and ensures superior heat dissipation, allowing the drivers to maintain consistent output even during extended operation at high power levels. The low-frequency response extends from 50 Hz to 4600 Hz, with an optimized crossover point between 40 Hz and 150 Hz. This provides tight, punchy bass and strong low-mid impact, making the PA-X4 suitable for both music playback and live band performances. The ferrite magnet structure offers durability and reliability, particularly in demanding touring environments where consistent performance is essential.

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The mid-frequency section is powered by dual 10NMB420 neodymium drivers, each rated at 500 watts. These drivers offer an impressive 99 dB SPL sensitivity at 1W/1m, contributing to the system’s high overall efficiency. The 65 mm (2.5-inch) Interleaved Sandwich Voice Coil technology enhances power handling and thermal control while maintaining lightweight construction due to the neodymium magnet structure. The midrange frequency response spans from 65 Hz to 5000 Hz, with crossover points between 150 Hz and 800 Hz. This range ensures excellent vocal clarity, detailed instrument reproduction, and natural tonal balance. The neodymium magnet not only reduces the overall system weight but also improves magnetic efficiency, making the PA-X4 easier to handle during rigging and installation without compromising performance.

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For high-frequency reproduction, the system incorporates the 4590P compression driver, a ferrite-based high-frequency unit designed for precision and brilliance. With a sensitivity of 118 dB SPL at 1W/1m, the high-frequency section delivers exceptional clarity and projection. The frequency response ranges from 300 Hz to 20 kHz, with crossover management between 800 Hz and 20 kHz. This ensures smooth transition from the midrange drivers while maintaining crisp highs and extended top-end detail. The high-frequency driver is engineered to minimize distortion and maintain consistent dispersion, allowing audiences across a wide coverage area to experience uniform sound quality.

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The cabinet design of the PA-X4 is optimized for long-throw applications. The enclosure is constructed with high-quality materials that provide structural rigidity, minimizing resonance and unwanted vibrations. The internal acoustic chambers are carefully tuned to maximize efficiency and control airflow for optimal driver performance. The system’s dimensions measure 322 x 1380 x 430 mm, and it weighs approximately 60 kilograms. Despite its powerful output capability, the design maintains a practical form factor suitable for array configurations and touring setups.

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The front of the cabinet features a precision-engineered grille that protects the internal components while allowing maximum acoustic transparency. The system is built to withstand heavy-duty usage, making it suitable for rental companies, production houses, and permanent installations requiring dependable performance. The tri-amp design ensures that system engineers have complete control over frequency shaping, allowing integration with digital signal processors and modern sound management systems.

With a total program power rating of 3650 watts, the PA-X4 delivers commanding output levels suitable for large venues and outdoor environments. The combination of high-sensitivity drivers and efficient crossover design results in impressive sound pressure levels without excessive amplifier strain. This ensures both power and clarity, even at high volumes. The system is capable of delivering impactful bass, articulate mids, and sparkling highs, making it versatile across different genres of music and speech reinforcement applications.

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The integration of premium drivers from internationally recognized manufacturers ensures reliability and professional-grade sound reproduction. The use of advanced voice coil technologies enhances durability and reduces the risk of thermal compression. Each component is selected to complement the others, creating a cohesive system that balances power with precision.

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Overall, the PA-X4 12-inch 4-Way Line Array Tri-Amp system represents a powerful, high-performance solution for demanding sound reinforcement applications. Its carefully engineered driver configuration, robust cabinet construction, and high program power capability make it suitable for professional audio environments requiring long-throw coverage and wide dispersion. Whether deployed in a touring array, fixed installation, or large event production, the PA-X4 stands as a heavy-duty, reliable, and acoustically refined loudspeaker system designed to deliver exceptional sound performance across the full frequency spectrum.