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White Room

Alpha Source 435

1x15, 1x10" & 1x3" 3-Way High Performance Speaker

Product at a Glance

Introducing the Alpha Source 435, a state-of-the-art Three Way 15" Loudspeaker that combines scientific engineering and precision craftsmanship to deliver unparalleled audio performance. Designed with meticulous attention to detail, this loudspeaker is the ideal choice for a wide range of professional applications, from live performances and DJ setups to sound system rental and permanent installations.

The Alpha Source 435 features a three-way configuration that harnesses the power of three distinct drivers to cover the entire frequency spectrum with exceptional accuracy. The Low-Frequency (LF) driver, a 15" powerhouse equipped with a 4" voice coil, delivers robust and impactful bass reproduction, ensuring a solid foundation for your sound system.

In the midrange, the 10" driver with a 3" voice coil takes center stage, providing precise and detailed audio reproduction. This driver is designed to accurately convey the nuances of vocals, instruments, and other midrange frequencies, resulting in a clear and articulate sound reproduction that captures every subtlety of your music.

At the high end, the Alpha Source 435 utilizes a 2" driver with a 2" voice coil, which is responsible for reproducing crystal-clear high frequencies. This dedicated high-frequency driver ensures exceptional clarity, allowing you to hear intricate details and harmonics in your audio with remarkable precision.

The loudspeaker supports both bi-amping and tri-amping operation, giving you the flexibility to optimize the sound and performance to suit your specific requirements. This allows for more precise control over the individual frequency ranges and ensures maximum efficiency and fidelity throughout the system.

To further enhance versatility, the Alpha Source 435 features a rotatable horn, enabling you to adjust the dispersion pattern to suit different applications and room acoustics. This allows for optimized coverage and sound distribution, ensuring that every listener in the audience experiences the same high-quality audio, regardless of their position in the venue.

Crafted with durability in mind, the Alpha Source 435 is constructed using high-quality Birch Marine Plywood. This robust material not only provides excellent acoustic properties but also ensures that the loudspeaker can withstand the rigors of professional use, making it suitable for both touring and permanent installations.

With its exceptional engineering, precise driver selection, and versatile configuration, the Alpha Source 435 is a powerhouse loudspeaker that meets the demands of the most discerning audio professionals. Whether you're delivering a captivating live performance, setting up a mobile DJ system, providing sound for a large event, or installing a permanent sound reinforcement solution, the Alpha Source 435 delivers unparalleled audio fidelity and performance that will leave a lasting impression on both you and your audience.


Painstakingly Perfect Production

Over the years, craftsmanship has been closely linked with small scale individualistic production. Back in 1972, we started the same way. As we grew in scale & size, it was difficult to build each speaker individually, but quality control was of utmost importance as so switching to a general assembly line was simply not an option. So we wrote up a code, one quite like enigma, to ensure quality control. We selected the right partners, got the right tools, and in cases where those weren't available, we invented them. We grew slower than most as our aim was to last longer than most. 



Frequency Response (-3 dB)

37 Hz - 20 kHz

Frequency Range (-10 dB)

Coverage Pattern

70° x 50°

LF Driver

31 Hz - 20 kHz

Rated Power

15" ADR Alpha Range Drivers, 4" VC - Ferrite

MF Driver

1000W Continuous, 4000 Peak

Maximum SPL

138 dB Peak

10" ADR Alpha Range Drivers, 3" VC - Ferrite

HF Driver

2" exit compression driver, 2" VC

Nominal Impedance

8 Ohms (Biamp/Triamp)

Crossover Frequency

400Hz (active), 1900 Hz (passive)




Marine Birchwood Cabinet, Premium Grade


Perforated Stainless Steel Grill backed by acoustically transparent foam over a stainless steel mesh


British Acoustics' Signature Brown Finish

Mounting System

Integrated Handles - M-10 insertion points




39 kgs






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