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TM
dm10
Connections
Connecting to a power amplifier
Each dm10 has:
2 pairs of unbalanced current outputs (use 1 pair for un-bridged power amplifiers, use both
for driving bridged amplifiers), 2 pairs of unbalanced voltage outputs and 2 pairs of balanced
voltage outputs for power amplifiers. Select the method you wish to run your power
amplifiers in, and connect the units using high quality cables.
Outputs are color coded:
Po, Right channel (Red Bezel).
Negative -, Left channel (White Bezel).
The dm10 will control power amplifiers from balanced and unbalanced voltage sources, as
well as an unbalanced current source. The dm10 will also control power amplifiers in bridged
pair configuration. Custom made cables are required to run bridged power amplifiers from
the balanced Voltage Output (Fig 8).
Comments on the different dm10 Outputs
The balanced voltage outputs or current-mode outputs are most desirable for minimizing earth
loop generated mains hum and ripple, or high frequency interference if they are a problem.
Earth loop generated mains hum and ripple, or high frequency interference should not be a
problem unless the source equipment is poorly designed.
Power Amplifiers with current-mode inputs are rare and are most likely to have an RCA input
socket. The advantages of this are:
Ÿ
Earth loop generated mains hum and ripple are minimized
Ÿ
Cable, plug and socket-generated interference are minimized (from poor connections
which may be affected by sound vibration for example).
The unbalanced voltage output is quite satisfactory so long as earth loop generated mains hum
and ripple are not a problem.
Figure 8
