HK Audio PR:O passiv - Manual (Page 7)

7
English
Figure 2.2: Powered mixer and/or mixer and a power amp
(Fullrange)
Figure 2.3: PR:O 12 M and PR:O 15 X monitors in action
2.2 PR:O 8, PR:O 10 X, PR:O 12, PR:O 15
and PR:O 15 X in Satellite Mode with
the PR:O 18 S
First connect the speaker output of the powered mixer
or power amp to the PR:O 18 S subwoofer’s input, and
then connect the subwoofer’s SATELLITE OUT to the
PR:O 8, PR:O 10 X, PR:O 12, PR:O 15 and PR:O 15 X
full-range cabinet’s input (IN).
Note:
The nominal impedance of systems consisting of a
combination of PR:O 18 S and PR:O 8, PR:O 10 X,
PR:O 12, PR:O 15 and PR:O 15 X cabinets is 4 ohms!
2.3 PR:O 10 X, PR:O 12 M und PR:O 15 X
Connect the monitor power amp’s speaker output to
the PR:O 10 X, PR:O 12 M und PR:O 15 X monitor’s
input (IN). Depending on the type of power amp or
powered mixer that you are using, several
PR:O 10 X, PR:O 12 M und PR:O 15 X monitors can
be connected in parallel to one power amp channel.
Note:
• When two PR:O 10 X, PR:O 12 M and PR:O 15 X
monitors are -connected in parallel, overall
impedance is 4 ohms.
• When three PR:O 10 X, PR:O 12 M and
PR:O 15 X monitors are connected in parallel,
overall impedance is 2.7 ohms.
• When four PR:O 10 X, PR:O 12 M and PR:O 15 X
monitors are connected in parallel, overall
impedance is 2 ohms.
Caution:
Do not allow the overall nominal impedance of the
connected monitors to fall below the power amp
channel’s minimum impedance! If it does, you risk
destroying the power amp!
3 Troubleshooting
All speaker cords are connected, but no sound
is audible!
1 Check if the power amp is switched on and the
mixing console is connected to the power amp.
2 Check if the Speakon connectors that are plugged
into the input jacks are locked into place.
Twist the connector clockwise until it engages.
You have set up a satellite system and the mid/high
units are working fine but no low-end signal is heard
from the subwoofers!
1 Check if the PR:O 8, PR:O 10 X, PR:O 12,
PR:O 15 or PR:O 15 X full-range cabinets are
connected to the PR:O 18 S subwoofer’s
SATELLITE OUT. Be sure to connect the cords in
the proper sequence! First connect the speaker
-output of the powered -mixer or power amp to the
PR:O 18 S subwoofer’s -input, and then connect the
PR:O 18 S subwoofer’s SATELLITE OUT to the
PR:O 8, PR:O 10 X, PR:O 12, PR:O 15 or PR:O 15 X
fullrange cabinet’s input (IN).
For more on this, see the chapter,
-Connecting Components and Speakers.