Alpha Sub 428 S
Twin 18" Passive Subwoofer
CRAFTSMANSHIP
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.
TECHNICAL SPECIFICATIONS
ACOUSTIC
AESTHETIC
DIMENSIONS
Frequency Response (-3 dB)
32 Hz - 190 Hz
Nominal Impedance
4 Ohms
Enclosure
Marine Birchwood Cabinet, Premium Grade
Height
20"
Frequency Range (-10 dB)
37 Hz - 200 kHz
Coverage Pattern
Omni-directional
Grill
Perforated Stainless Steel Grill backed by acoustically transparent foam over a stainless steel mesh
Width
47.2"
Rated Power
2000W Continuous, 8000W Peak
LF Driver
2 x 18" Ultra Long Excursion ADR Drivers, 4" VC - Ferrite
Finish
British Acoustics' Signature Brown Finish
Depth
30"
Maximum SPL
144 dB
Inputs
2 x Speak-on Connectors, Wired Parallel
Mounting System
Integrated Handles - M-10 insertion points
Weight
82 Kgs
Sensitivity
101.5 dB
