8
– VRM12
VRM12 –
9
5. OPERATION
Signal Processing
Sometimes external signal processing is desirable to “voice” the loudspeaker to
accommodate particular program material, less than optimum acoustics, feedback control, or
personal taste. For these purposes, use a suitable electronic signal processor. This can be as
simple as a 1/3 octave graphic equalizer or a fully capable DSP (digital signal processor) such
as the EAW Commercial DX810, or the EAW MX8750.
Choosing a Power Amplifier
There is no exact answer to the question of what amplifier size you should use for a
loudspeaker. The loudspeaker power rating in EAW Commercial’s specifications only means
it has passed a standard power test. This provides a rating that can be used as a point of
comparison with other loudspeakers. This rating does not necessarily correspond to the best
amplifier size to use nor is it a measure of a “safe” amplifier size to use. Rather, the amplifier
should be sized according to both the sound levels required and the type of audio signals
that will be reproduced. If you are unsure of how to determine this, consult with a qualified
professional or contact EAW Commercial Technical Support.
Preventing damage to the loudspeaker is a function of operating your audio system so
that the loudspeaker is not stressed beyond its design limits.
Operating Tips
• Do NOT drive any of your electronic equipment into clipping, particularly the power
amplifiers. This can easily damage the loudspeaker.
• If driven into clipping, even an amplifier with a power output rating lower than the
loudspeaker’s power rating can cause damage to a loudspeaker.
• Avoid sustained microphone feedback. This can quickly cause failure of high-
frequency drivers.
• Avoid extreme boosts on equalizers as these can cause excessive input to the drivers
at the boosted frequencies. Generally, cutting frequencies is preferred to adjust the
frequency response.
• With appropriate signal processing, your loudspeaker should produce exceptionally
good sound. If it is used in a room with problematic acoustics, there is little you can
do to overcome the room problems with electronic adjustments. Your best solution
is careful placement and aiming of the loudspeaker so most of the sound is directed
only at the audience.
• Most EAW Commercial loudspeakers are capable of sound levels that can be
damaging to human hearing. Take precautions so that audiences are not exposed
to such levels. If you must expose yourself to these kinds of volume levels, wear
adequate hearing protection.
• Take care when moving or lifting the loudspeaker. Injury to you or damage to the
loudspeaker can result from careless handling.
