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Full-Range Systems
Introductory Concepts
The USW-1P is used to add low frequency SPL to sound
systems. It is optimized to be used with the Meyer UPA-P
series self-powered loudspeakers. It can also be used with
all Meyer Sound loudspeakers. For information on integrat-
ing the USW-1P with the UPA-P, see the UPA-P Series
Operating Instructions. For information on using the USW-1P
with other Meyer Sound products please contact Meyer Sound
Technical Support.
Using the USW-1P in a full-range system is straight forward but
the following concepts are important to consider before in-
stalling a system.
Room Loading
The placement of the USW-1P in a room or a space is critically
important to the response of the speaker system. A USW-1P
hung in the air with no boundary conditions would not add any
SPL from room loading.
A USW-1P placed on a floor (half-space loading) will gain
approximately 6 dB compared to its free field response.
6 dB low frequency gain compared to free field.
A USW-1P placed on a floor and against a wall (quarter-space
loading) will gain approximately 12 dB compared to its free
field response.
12 dB low frequency gain compared to free field.
A USW-1P placed on the floor in a corner (one-eighth space
loading) will gain approximately 18 dB compared to its free
field response.
18 dB low frequency gain compared to free field.