Dynacord CMS 600-3 Owner'S Manual Download

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CMS

5 Setting up a standard PA

5.1 Cabling

The mains supply cord comes with the CMS. The quality
of all other cables lies in your responsibility. Carefully
chosen high quality cables are the best precaution to pre-
vent later problems during live operation. The following
wiring alternatives are recommended to provide trouble
free operation of your system.

LF-C

ABLES

- B

ALANCED

NBALANCED

For LF-cabling – all the low current wiring – your best
choice are balanced cables (2 signal cond ground
shielding) with XLR-type connectors or stereo phone
plugs. The cables should be step-on proof, shielded, and
never longer than really needed. Too many too long ca-
bles mostly lead to confusion and generate unnecessary
problems. Of course, connecting unbalanced cables with
monaural phone plugs to the CMS’s in- and outputs is
also possible and in most cases no interference will occur
because of its superb grounding managing system. Gen-
erally spoken, if you have the choice, a balanced LF-cable

is always the better solution. Today’s modern audio
equipment – like amplifiers, equalizers, FX units, mixing
consoles, and even some keyboards – offers balanced in-
and outputs. In a balanced signal path the cable screen
provides gapless connection of all metal parts, offering
efficient shielding against the induction of external noise.
The balanced cabling in conjunction with the common-
mode rejection of the CMS’s input stage effectively elim-
inates even existing artifacts of interference. All inputs of
the CMS provide balanced audio connections and high
common-mode rejection. The mixing stage outputs –
AUX, MASTER, MONITOR, etc. – are laid out in GND-
SENSING technology – a special pin assignment of the
output jacks, offering all advantages of the balanced sig-
nal transmission, but lets you also connect monaural
phone plugs without a problem. Nevertheless – as men-
tioned above – when longer cables are involved, using
stereo phone plugs and balanced cables are the better al-
ternative. The diagrams below show the pin assignments
of plugs and cables that are used with the CMS.

5.2 Setting up

Place the CMS in a way that allows unobstructed
operation and connect the mains cord.

Try to locate the best position where you want to
place the loudspeaker systems. If possible, the
woofers should be placed on the floor while the Hi
cabinets’ most favorable position is above the Lo
cabinets, on the same vertical axis. It is important
that the lower edge of the Hi cabinets is approxi-

mately at the same height level or slightly higher as
the heads of the audience. Either you use the pole
mounts to place the Hi cabinets on top of the
woofer cabinets or, in case this kind of installation
is not possible or you are not using woofer systems,
use the separate speaker pole-stands instead.

Do not place the left and the right speakers further
apart than necessary. The less distance there is

CMS

Cable

Application

MIC INPUT

balanced connection of micro-
phones

All phone jack in/outputs
(except PHONES)

unbalanced external equipment with
XLR-type in/output jacks

balanced external equipment with
XLR-type in/output jacks

All phone jack in/outputs
(except PHONES)

unbalanced external equipment with
phone jack in/output jacks

balanced external equipment with
phone jack in/output jacks