KH 805 |
15
Using the KH 805
Switching the subwoofer on/off
You can switch the KH 805 on and off using the switch MAINS POWER
5
.
X
Set the switch MAINS POWER
5
to:
• “ON” to switch the subwoofer on . The LED POWER ON
I
lights up red for 3 seconds, dur-
ing which the subwoofer is muted (see below) . The LED POWER ON
I
then lights up
green .
• “OFF” to switch the subwoofer off . The LED POWER ON
I
goes off .
There is a three second delay before sound can be heard from the KH 805 and the loud-
speakers connected to the outputs in order to avoid noises (pops) from preceding
equipment switched on at the same time . Conversely, switching off the subwoofer
immediately mutes the audio .
Calibrating the subwoofer
Before using your system for the first time and whenever you change the physical conditions in
your studio, carry out the following steps:
X
Adjust the frequency response and the level of the loudspeakers
before
calibrating the sub-
woofer (see the operating manual of the loudspeakers):
Application
Recommended frequency response
Comments
Studio
flat
A flat response brings good
translation
Film
X-curve shape
Cf . ANSI/SMPTE 202M:
the shape of the X-curve
depends on the size of the room
Home
subjective evaluation
Not necessarily a flat response,
a gently downward sloping
response with increasing
frequency is often preferred
All the loudspeakers in the system should have the same level at the listening position . This
is often measured using a pink noise test signal that is set to -18 dBFS (Europe) or -20 dBFS
(USA) on the mixing console’s output level meters and a sound level meter set to “C-weighted”
and “slow” .
On/off switching
using the switch
MAINS POWER
5
