Lehmannaudio Drachenfels Manual page 24

Headphone amplifier, streaming preamplifier
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46
Drachenfels
Technical specifications
EN
Input impedance
47 kohms
Maximum gain setting
12 dB with maximum potentiometer setting
Analogue frequency
10 Hz (-0,3 dB) to 35 kHz (-1 dB)
response
Analogue S/N ratio
> 85 dB at +0 dB gain
Analogue THD
< 0,006 % at 18 mW/330 ohms
Channel separation
> 80 dB at 10 kHz
Power output
330 ohms/110 mW
33 ohms/180 mW
Output impedance
Pre-out 105 ohms
Phones out 5 ohms
Audio Connections
Neutrik headphone sockets with gold-plated contacts
1 x pre-out
2 x phones out
Line in/pre-out: RCA
Mains connections
100 V – 240 V AC
Power consumption in
app. 4 W through external wide range wall power
operation
supply (without any optional pc board)
Enclosure dimensions
160 mm x 120 mm x 43 mm (audio section)
W x D x H
Weight
0,5 kg (1.1 lbs.) net (audio section)
Accessories
For the Drachenfels as a purely analogue device we will offer several module
boards in the long run that can be fitted into the designated plug-in location
inside the unit by your specialist retailer. Your dealer will inform you about all
options and possibilities.
Troubleshooting
Fault
Cause
LED indicator is
Power supply is not con-
not on
nected to a power outlet.
Device is not turned on.
Power supply is not con-
nected with the device.
No headphone
Device receives no sound
signal
signal.
Volume control is set to
minimum.
Headphone is not
plugged into the socket.
No signal at the
Headphone is plugged
pre-out
into the left headphone
output.
Drachenfels
47
EN
Solution
Connect the power supply with
the power outlet.
Turn on the device with the
power switch located on the
front side of the unit.
Connect the power supply with
the device.
Make sure the signal source
provides a signal to the device.
Set the volume control to the
desired volume level.
Plug the headphone into the
headphone socket.
Pull the headphone connector
out of the device or plug it into
the right headphone socket.

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