*** CAUTIONS AND WARNINGS ***
1. Don’t let the frenzy of setting up the system get in the way of
common sense. If it takes just a bit longer to set up your system
because you double-checked your connections, or the way you
stacked, mounted, or suspended the speaker systems - so be it.
Make it a habit - you won’t regret it.
2. Don’t stick your head up to the speaker to see if you can hear
any background noise or hiss. That is just when someone else
will decide to see if the system really can attain an output of 150
dB SPL at 6 inches (your ears)!
3. While sustained feedback can be irritating to a listener, it can
spell death to high-frequency diaphragms.
4. If you mount the speaker enclosure on a stand or support, be
sure it is sufficiently rigid to support the enclosure. If necessary,
use guywires, ropes, braces, or whatever seems appropriate to
steady it. Make sure no one can trip over the legs of a stand (or
guy wires, etc.) as they walk by. Yes, it has happened.
5. Know how to pick up heavy items (such as speaker enclo-
sures). If you must lift something very heavy by yourself, use
your legs and arms to do the lifting - not your back. Better still,
get someone to help you.
6. Check the AC power before you hook up the system. It is
common to find problems not only in nightclubs, but in churches
and schools, too. Use an AC circuit tester which shows that the
ground, neutral, and hot wires are connected properly. Then use
a voltmeter to ensure that the voltage is correct. You never know
who might have installed the receptacles or AC distribution
panels, or whether they really knew what they were doing.
Check it out! If something is not right, have an electrician fix it.
13
