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TM
dm10
SPECIFICATIONS & FEATURES of
the HALCRO dm10
Remote Control Preamplifier
Controls
On/Standby:
Front Panel: 1 x Push Button
Remote Control: 1 x Push Button
Volume:
Front Panel: Optical Rotary Encoder with
Halcro Flux Detent
Remote Control: 2 x Push Buttons
Input Select.
Front Panel: Optical Rotary Encoder with
Halcro Flux Detent
Remote Control: Push Buttons
Balance:
Front Panel: 2 x Push Buttons
Remote Control: Function Key, 2 x Push
Buttons
Mute:
Front Panel: 1 x Push Button
Remote Control: 1 x Push Button
Mono/Stereo:
Front Panel: 1 x Push Button
Remote Control: Function Key, 1 x Push
Button
Phase:
Front Panel: 1 x Push Button
Remote Control: Function Key, 1 x Push
Button
Input Program:
Rear Panel: 7 x Push Buttons
Cartridge Select:
Rear Panel: 1 x Toggle Switch
Phono Gain:
Rear Panel: 1 x Toggle Switch
Phono Capacitance:
Rear Panel: 180° Rotary Control
Phono Resistance:
Rear Panel: 270° Rotary Control
Headphone Ground:
Rear Panel: 1 x Toggle Switch
Display:
Backlit LCD (Back light on/off see page 19)
Displays L&R volume setting, selected input,
mono/stereo (phono only), and phase.
Noise
< 0.6nV/sqrt (Hz) equivalent input noise for
moving coil
< 6nV/sqrt (Hz) equivalent input noise for
moving coil at 1kHz (< 1H and < 600ohm
coils)
< 15nV/sqrt (Hz) for 32dB gain or <
12nV/sqrt (Hz) for 36 or 44dB gain
equivalent input noise for moving coil
at 20kHz for load impedance set at 47Kohms
and capacitance set to resonate with coil
(assuming worst case high-Q coil).
PCB
4-layer PCBs for ultra high accuracy
reference potentials.
Components
Vishay 0.5% resistors and FKP1 1250V or
MKP10 capacitors in critical audio signal
paths.
Input programming
Up to 6 signal source units can be connected
to the 9 physical inputs. The assigned source
is shown on the display. This is memorised
and may be either reprogrammed or de-
allocated. The programming is performed
using the remote control and remote
input receivers both behind the front and
rear panel for flexibility. The program status
of each input is displayed on a LED
associated with each input pair.
Memory
All volume gain settings for each
programmed input (source) are remembered
upon either power off or upon selection to
a different input. Upon re-selection to each
input, or upon power up, the previously
remembered volume for each input is
reinstated.
This accommodates differing source outputs.
For example, a modern CD player may have
an output up to a few volts, whereas an
older type of analogue tape recorder may
only output a few hundred millivolts. This
feature will return the volume setting to the
previous value.
