SB-1 PHYSICAL DIMENSIONS
frequencies. The best propagation of sound waves occurs when the
air is either very hot and moist, or very cold and dry. In more
moderate conditions, attenuation due to air loss may exceed 3 dB
per doubling of distance from the SB-1.
Interestingly, unlike conventional horn systems, two adjacent SB-
1s can be aimed into the same coverage area for an increase of 6
dB in SPL — without producing cancellations. This unique property
of the SB-1 can be exploited to compensate for air losses.
Can the SB-1 be modified to work below 500 HZ?
No, the 500 Hz limit is determined by the laws of physics: it is the
lowest frequency (longest wavelength) at which the parabolic
reflector remains effective. To provide the same narrow directivity
at lower frequencies would require a vastly larger dish.
Except in special circumstances, however, there is generally little
need for a highly directional low-frequency device. As reinforcement
professionals know from experience, low frequencies travel farther
(that is, are less quickly absorbed by the air) than high ones, so
long throw capability is less of an issue. If the need arises to steer
very low frequencies so as to avoid them spilling into unwanted
coverage areas, selective phase cancellation techniques are more
economical to implement than very large parabolic dishes.
Is the SB-1 weather-resistant?
While the SB-1 is designed and constructed to withstand touring
and intermittent outdoor use, it is not designed for permanent
outdoor installations. A weather-resistant version is in
development; contact your Meyer Sound representative or the
factory technical support department for details.
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
tel: 510.486.1166
fax: 510.486.8356
e-mail: techsupport@meyersound.com
http: www.meyersound.com
