KH 805 |
19
Setting the replay level of the subwoofer
This mode should be used when the signal has not been encoded already . Do not use this mode
when playing back DVDs, Blu-ray disks or if there is a bass manager before the subwoofer . The
LFE channel should be replayed at a level 10 dB higher than the main channels . The level can
be set in the monitoring matrix (console or external), or by setting an appropriate output level
on the subwoofer .
X
Connect the LFE channel to the socket INPUT | LFE
C
of the KH 805 .
X
Set the switch RIGHT CHANNEL INPUT MODE
K
to “LFE (120 Hz)” .
X
Calibrate the frequency response of the subwoofer to be flat .
X
Measure the SPL of one of the main channels using pink noise and a sound level meter set to
“C-weighted” and “Slow” .
X
Measure the SPL of the LFE channel using pink noise and a sound level meter set to
“C-weighted” and “Slow” .
X
Adjust the level so it is 4 dB higher than the main channel . This corresponds to 10 dB more
(unweighted) level .
The LFE (WIDE) routing mode is used when there is a bass manager before the KH 805 sub-
woofer . It should also be used when a DVD or Blu-ray player is connected directly to the sub-
woofer (i .e . after the program material has been encoded) . This mode avoids double filtering of
the bass managed signal but still allows the subwoofer’s frequency response to be calibrated .
X
In the source, set the bass management system to “On” .
This is typically achieved by setting the loudspeaker size to “Small” .
X
In the source, switch the subwoofer output to “On” .
X
In the source, choose a crossover frequency of 80 Hz .
X
In the source, select the crossover slope to be 24 dB/oct ., if possible .
X
Connect the “Sub” channel to the socket INPUT | LFE
C
of the KH 805 .
X
Set the switch RIGHT CHANNEL INPUT MODE
K
to “LFE (WIDE)” .
X
Calibrate the frequency response of the subwoofer to be flat .
X
Set the level so it has the same level as the loudspeakers .
The Daisy Chain routing mode is used for the second, third, fourth, etc . subwoofers connected
in a daisy chain configuration . The first subwoofer acts as a “master” for the subsequent sub-
woofers in the daisy chain .
X
Connect the signal(s) to the first subwoofer in the daisy chain and set the switch RIGHT
CHANNEL INPUT MODE
K
to “RIGHT”, “LFE (120 Hz)” or “LFE (WIDE)” as appropriate - see
above .
X
Connect the socket OUTPUT | DAISY CHAIN
D
of the first subwoofer to the socket INPUT |
DAISY CHAIN
C
of the second subwoofer and set the switch RIGHT CHANNEL INPUT MODE
K
of the second subwoofer to “DAISY CHAIN” .
X
Repeat the above for each additional subwoofer in the daisy chain .
X
Using the acoustical controls on the first subwoofer, calibrate the frequency response of the
entire subwoofer set to be flat and set the level so it has the same level as the loudspeakers .
The acoustical controls of the daisy chained subwoofers have no effect on the response of
those subwoofers .
Right channel input mode:
LFE (120 Hz)
Right channel input mode:
LFE (Wide)
Right channel input mode:
Daisy Chain
