Halcro dm10 Owner's Manual page 29

Preamplifier with remote control
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Shipping dimensions
Wooden case
Width: 585 mm, 23 in
Depth: 535 mm, 21 in
Height: 515 mm, 20 in
Weight: 36 kg, 81 lb
Aluminum case
Width: 585 mm, 23 in
Depth: 535 mm, 21 in
Height: 390 mm, 15.5 in
Weight: 38 kg, 81 lb
Gain
Unbalanced and balanced -60 dB to +20 dB
set by volume control Phono 32 dB, 38 dB or
44 dB for moving magnet, switch selectable
+27 dB for moving coil (measured at 1 kHz).
Input impedance
• 10 kohm + 10 kohm balanced
• 10 kohm unbalanced
• 10 to 60 kohm plus 60 to 350 pF both
continuously variable for moving magnet
• 220 ohm plus 4.7 nF for moving coil
50ohms for current mode.
Output impedance
• 170 + 170 ohm balanced and 170 ohm
unbalanced
• 30 kohm current mode
• 10 ohm headphones
• 340 ohm tape
Distortion
Immeasurable- below noise floor. At full
specified output, < 250 parts per billion
(-132 dB) for balanced and un-balanced and
current modes.
Noise
< 0.6 nV/sqrt(Hz) equivalent input noise for
moving coil.
< 6 nV/sqrt(Hz) equivalent input noise for
moving coil at 1kHz (< 1H and < 600 ohm
coils).
<
15 nV/sqrt(Hz)
for
12 nV/sqrt(Hz) for 36 or 44 dB gain equivalent
input noise for moving coil at 20 kHz for load
impedance set at 47 kohms and capacitance
set to resonate with coil, assuming worst case
high-Q coil.
Volume control
+20 dB to -60 dB in 0.5 dB steps.
28
32 dB
gain
or
<

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