With the addition of a second woofer, implemented in Usher’s proprietary configuration, the BE-20 Diamond DMD possesses an ease and authority in ultra low bass reproduction that’s difficult to match even by speaker systems several times larger in size. For those seeking the final word in ultra low bass reproduction, and those who have a large listening room.

BE-20 diamond
3-way system : Diamond DMD dome tweeter 1.25″ ,
mid-low woofer 5″ (0541A),
and  low-bass woofer 11″x2 (ETON 11-584)
sensitivity: 90 dB @ 1 watt / 1m
nominal impedance: 4 ohms
frequency response (-3 dB): 23 Hz ~ 40 kHz
power handling: 200 watts
crossover frequencies: 385Hz and 3.5kHz
weight: 123 kgs (including base)
dimensions (w x d x h): 36.5 cm x 89.5 cm x 140 cm

shipping weight: 136.6 kgs /pc (including wood crate without base)
18.5 kgs /pc (base)
shipping box (w x d x h): 160 cm x 55 cm x 91 cm
(including wood crate without base)
45 cm x 96 cm x 19 cm (shipping base)