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