Clair Brothers USLP218 is a new double 18”
subwoofer specifically designed to fit into
height-limited applications. At a mere 18”
maximum height, the USLP218 cabinet installs
easily below low stages. Typical double 18”
subwoofers range from 4.5” to 7” taller.
While USLP218 features a unique physical
orientation, it retains Clair Bros. highperformance acoustical profile. Slanting the
woofer orientation slightly downward [see
typical configuration on next page] produces
an efficiency gain of approximately +2.5dB
(when compared with pointing upward, as
seen above) on account of the boundary
interaction with the floor.

In ‘landscape mode’ (18” height), USLP218
has been designed to fit in tight quarters,
however it may also be creatively applied in
powerful subwoofer arrays in ‘portrait mode’
(rotated orientation to 18” width). Some
of these array configuration options offer
unprecedented benefits due to the unique
geometry of this cabinet. One of the most
interesting is a cardiod configuration which
requires absolutely no digital signal processing
to achieve a cardiod pattern.