User Guide

Page 6
TM
dm38
Connecting the External Ground
The dm38 is equipped with a separate ground terminal. The ground terminal has a
green bezel and is located under the power supply. This terminal may be used to
reduce hum and ripple in some circumstances.
Bridging
You may bridge the HALCRO™ amplifier, for details please email us at
[e-mail]
A bridging kit is available through HALCRO™.
Running-in period
The dm38’s electronic running-in period is completed at the factory. A further
running-in period is not required.
dm38 Input Selections
The dm38 has three switch selectable inputs, each having a separate input socket. Both
the input sockets and switch are mounted on the top rear panel.
Input
Styles
Required output source
impedance
Input
socket
Input impedance
Balanced voltage
input
Low impedance. e.g.,
standard preamplifier or
CD player etc.
XLR 10kohms + 10kohms
Un-balanced
voltage input
Low impedance. e.g.,
standard preamplifier or
CD player etc.
RCA 10kohms
Current-mode
input
Very high: “infinite.” RCA 60ohms