18
| KH 805
X
Check the settings of the sound pressure level and frequency response by means of music
signals . Listen for a smooth extension of the frequency response of the main loudspeakers
down to 20 Hz .
To to this, proceed as follows:
X
Listen to music containing content down to 20 Hz . Activate and disable the bass management
by repeatedly moving the switch BASS MANAGEMENT
F
between the two positions . There
should be no increase or decrease in level between the lower cut off frequency of the moni-
tor and 80 Hz .
Compensating for larger time of flight (TOF) differences
If the subwoofer is placed at a distance > 2 m (6'6") behind the loudspeakers with reference to
the listening position, the subwoofer’s integrated compensation settings will not suffice .
X
Connect the KH 805 to an electronic time delay . Insert the electronic time delay into the
signal path between the sockets OUTPUT
D
of the subwoofer and the input sockets of the
loudspeakers .
X
Compensate for TOF differences using the electronic time delay (see the operating instruc-
tions of the delay) .
X
Alternatively use the D versions of our products with the input select switch set to Analog
Delayed, and then make an appropriate setting on the delay switches .
Using the bass management
X
For a two-channel stereo system set the switch RIGHT CHANNEL INPUT MODE
K
to “RIGHT” .
X
Set the switch BASS MANAGEMENT
F
to “ACTIVE” .
The bass management is activated . This inserts a 4
th
order 80 Hz high pass filter into the
signal path of the audio outputs OUTPUT | LEFT and RIGHT
D
and routes all audio signals
below 80 Hz to the subwoofer . The LED BASS MANAGEMENT
G
lights up green .
If you deactivate the bass management, the audio signal of the audio outputs OUTPUT | LEFT
and RIGHT
D
is only reproduced by the loudspeakers . Use this function to prevent the low
frequency signal components of the main channels being reproduced by the subwoofer .
X
Set the switch BASS MANAGEMENT
F
to “DISABLED” .
Remote-controlling the bass management
CAUTION
Material damage due to improper use of cables!
X
Do not connect instrument or amplifier outputs to this socket as this could damage the
KH 805 and/or the source device .
It is possible to activate and deactivate the bass management filters remotely when the sub-
woofer is used in a two-channel stereo system setup . This allows one to listen to the source as
if there is no subwoofer connected in the system because the loudspeakers play full range with
no filtering when the bass management is disabled .
X
Set the switch BASS MANAGEMENT
F
to “ACTIVE” .
X
Use a “mono” jack cable to connect a switch to the REMOTE CONTROL socket
E
.
The switch should short the tip and sleeve together to bypass bass management .
If the switch has an LED indicator it can be used to show the status of the bass management
system because 9 V DC is present on the tip connection of the REMOTE CONTROL socket
E
.
There are some standard footswitches available at music retailers which can be used for this
functionality . Make sure to use a switch, as a pushbutton might not work properly .
Note that no audio passes down the remote control cables, only a control signal .
The pin assignment of the socket REMOTE CONTROL
E
can be found at the end of this
operating manual .
Compensating for TOF
differences by means of an
electronic time delay
