Table of Contents
Advertisement
THE DELTAMAX™ SYSTEM
INSTALLATION (continued)
*** CAUTION ***
The DML-1152APF speaker systems should be
suspended overhead only in accordance with
the procedures and limitations specified in the
DML-1152AF Flying Manual which is packed
with each flying speaker system.
Each DML-1152A speaker system comes with four
rubber feet and mounting screws as accessories for
the user to install as an option if desired. Rubber
feet on the enclosure lessens the possibility of slip-
ping and sliding in applications where the speaker
systems are stacked.
CONTROLLER INSTALLATION
Power Source
The DMC-1152B comes prewired from the factory
for operation at 120 volts. To operate at 240 volts,
the primary wiring of the power transformer must be
altered.
*** CAUTION ***
Hazardous voltages and currents may be en-
countered within the chassis. The service infor-
mation contained within this document is for
use by Electro-Voice authorized warranty sta-
tions and qualified service personnel only.
To change the transformer primary wiring configu-
ration use the following procedure:
1.
Unplug the controllers power cord from the ac
power source.
2.
Remove the seven screws securing the top
cover. There are two screws on each side, two
Screws on the rear and one screw in the front
panel (center, top).
100
VAC
PRIMARY
WIRING
Installation
3.
Locate the eight voltage select solder cups
near the power transformer. Referring to Table
1, reconnect the leads corresponding to the de-
sired primary voltage.
4.
Install the correct line fuse. See values in
Table II.
5.
Plug the power cord into an ac outlet and turn
the controller on. Measure the voltage at the
points shown in the PCB diagram. The mea-
sured voltage should be +22 volts. If the mea-
sured voltage is not within 1096 of this value,
turn the unit off and check the connections in
step 3.
6.
Reinstall the top cover with the seven screws.
Mounting
The unit is one rack-space high (13/4 in.) and fits a
standard EIA 19-inch rack. To make wiring easier,
mount the controller near the power amplifier(s).
Grounding
A widely accepted grounding technique for audio
systems is the star connection (single-point)
ground. The final configuration will be determined
by the size of the system and the equipment used
in the system. However, the star connection is rec-
ommended as a starting point.
The interconnecting cables of line level equipment,
such as the DeltaMax™ controller should have the
shields connected at one point only, usually the re-
ceiving end of the signal transmission. See Figure
14.
Never lift the third wire safety ground of the ac
power cable. It protects against possible shock
hazard.
220 VAC
PRIMARY
WIRING
TABLE I
Primary Power Conversion Chart for 100-, 120-, 220- and 240-V, 50/60-Hz Operation
page 16
Advertisement
Table of Contents
