MEDC DB20C User Manual
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© MEDC 2013
3.0 INSTALLATION
DB20
The unit is mounted via 2 off Ø7mm fixing holes in the U-shaped stirrup/mounting bracket. If required,
the unit can be initially placed via the Ø13mm central hole in the stirrup. The unit can then be rotated to
the required position and fixed via the other holes.
The fixing holes have been designed to accept an M6 screw or bolt.
DB20C
For DB20C installation details please see the section 8.
Access to Terminals
Unscrew the 3 off M5 screws (4.0mm A/F hexagon key) holding the cover assembly to the base. The
screws are retained in the cover. Remove cover to gain access to the interior of the terminal chamber.
Once termination is complete, carefully replace the cover back onto the enclosure, avoiding damage to
the mating surfaces. Evenly tighten the 3 off M5 screws (4.0mm A/F hexagon key) in the cover,
ensuring the O-ring is correctly seated in its groove during re-assembly. Ensure
4.0 OPERATION
The operating voltage of the unit is stated on the unit label.
Different sound levels can be obtained by selecting the transformer tappings in the unit, via the
terminals in the Exe chamber. See table below for available tappings:
WIRING DETAILS
POWER
TRANSFORMER
TAPPINGS
8W VERSION
4W VERSION
1:2
8W
4W
2:3
4W
2W
3:4
2W
1W
1:3
1.5W
0.75W
2:4
0.75W
0.375W
1:4
0.4W
0.2W