11
Controls and Connections
Connecting the loudspeakers
The dm78 and dm88 have four loudspeaker
terminals each:
•
2 x po (red bezel)
•
2 x negative - (black bezel)
All of the pure copper connections are finished
with the highest-grade gold plating.
o
Ensure the positive terminal of the
amplifier connects to the positive terminal
of the loudspeaker to ensure correct
phasing of the audio signal.
The loudspeaker terminals will accept
spade or hook terminals. Only fully
insulated terminals should be used.
o
Ensure the loudspeaker terminals are
securely tightened, but do not over
tighten or you may damage the terminals.
o
When connecting loudspeaker cables
always ensure the conductive surfaces
are not touching each other.
DO NOT SHORT-CIRCUIT THE
TERMINALS.
Connecting the external
ground
The dm78 and dm88 are equipped with a
separate ground terminal, which may be used
to reduce hum and ripple in some
circumstances.
There may be high vol ages
present at the loudspeaker
terminals which may present an
electric shock hazard i touched.
Always ensure the unit is
switched to OFF or Standby
mode when connecting or
disconnecting loudspeakers.
t
,
f
The ground terminal has a green bezel, and is
located either under the power supply (dm88)
or on the connector panel on the rear of the
unit (dm78).
Connecting the mains supply
cable
Connect the mains plug into the socket at the
rear, on the base of the bottom compartment,
which houses the power supply. Ensure the
cable exits to the rear of the unit.
Continue to read the following pages before
connecting to the mains outlet.
Bridging
You may bridge the Halcro dm78 and dm88
amplifiers, for details please E-mail us at:
Break-in period
The dm78 and dm88 electronic break-in
period is completed at the factory. A further
break-in period is not required.
