AudioControl The Director D3400, Руководство по установке

Страница: 35 / 44

TheDirector
Model D3400 • Model D4400
Installer’s Guide
®
31
Advanced Topics
The circumstances where The Director Model D3400
draws maximum power are very rare outside of an engineer -
ing lab. Maximum power is using a sine wave input which
has at least a third higher energy density than music. This
would mean that all channels are operating at maximum, an
unlikely situation even during a really fun party. Even more
unlikely is all channels on multiple units operating at full
output.
You know the system better than we do, so it is your deci -
sion. If the only use is background music, then the one-eighth
power in the specifications at the end of this manual is a
reasonable (actually conservative) power draw. Of course, you
will want to include a margin of safety for unusual circum
-
stances. And in the final analysis, you have to do what the
electrical inspector tells you to do.
Gain Controls and Level Matching
What is a “Typical” setting for the amplifier gain con-
trols on the rear panel?
Everyone wants to get the full power out
of an amplifier. However, very rarely does
the setting of the gain control restrict the
power, it just sets how much input voltage
is needed to drive the amp fully. What the
gain controls do affect is the quality of the
sound. In general, you want amplifier gain
controls down, e.g.. 10 o’clock, and the levels coming from the
pre-amp to be a higher level for no hiss and superior signal to
noise.
What should I use the “Trim” controls in the browser
for as compared to the rear panel gain controls?
The Trim controls are an easy to access level setting con -
trol which you can use while in the zone as compared to be -
hind the unit screwdriver in hand. The “Trim” controls allow
minor not major adjustments.
Unique Rooms and SPL in Large Areas
Are there any special considerations for bathrooms?
Bathrooms are irregular rooms, rooms within a room,
with high ambient background noise, often with noise mask -
ing type of ambient sound, highly reflective, and often fairly
large. If you pause and think about that for a moment, these
are some of the more challenging rooms.
Gain Level Adjustment