2.6 Mounting
On the bottom there is a 3/8" threaded bushing for mounting
the M 50 on a standard microphone tripod. The LH 11 table
mount bracket can be fixed to the two M6 threaded holes in
the sides and so allows rotation around horizontal and verti-
kal axis.
2.7 Mains and Battery Fuses
The mains fuse is to be found on the rear panel, close to
mains connector whereas the battery fuse is only accessible
after removing the rear panel. Before changing fuses all power
sources have to be disconnected. Only the following fuses
5x20 mm may be used:
mains 230 V AC
0.2 A slow blow
mains 117 V AC
0.4 A slow blow
mains 100 V AC
0.5 A slow blow
battery 12 - 14 V DC
2.5 A slow blow
2.8 Groundlift
Since the input is transformer -
balanced and floating, you should
rarely experience any hum. In unusual
cases, or if the source is unbalanced,
it may be necessary to lift the
connection between signal ground and
chassis ground (connected to
protective earth, PE), in which case you
will find a wire bridge inside the
amplifier - see figure beside. On
delivery the shown connection is closed and can be opened if
a hum interference occurs.
Warning!
Never disconnect the protective earth (PE) of the mains
power cable from the chassis ground!
2.9 Positioning
The loudspeaker chassis used in the M 50 is magnetically
shielded, so you are free to set the speakers right next to a
video monitor without needing to worry about adversely
affecting the screen. The sophisticated M 50 design gained in
an unified and neutral sound within the nearfield zone. Best
results are achieved within a hearing distance of 1 to 1.5 m.
Stereo pairs should be turned to the hearing area.
3. Operation
3.1 Mains switch
The power switch on the rear side activates the power supply
of the amplifier from both mains and battery sources. AC and
DC - input may be connected simultaneously. A red LED in
the front panel indicates, that the control monitor is ready.
3.2 Monitoring loudness
The M 50 is designed for nearfield monitoring. For best
performance and reliability it is recommended to avoid exessive
boosting of bass and treble by extern sound contols due to
large monitoring distances or bad positioning.
2.6 Mounting
On the bottom there is a 3/8" threaded bushing for mounting
the M 50 on a standard microphone tripod. The LH 11 table
mount bracket can be fixed to the two M6 threaded holes in
the sides and so allows rotation around horizontal and verti-
kal axis.
2.7 Mains and Battery Fuses
The mains fuse is to be found on the rear panel, close to
mains connector whereas the battery fuse is only accessible
after removing the rear panel. Before changing fuses all power
sources have to be disconnected. Only the following fuses
5x20 mm may be used:
mains 230 V AC
0.2 A slow blow
mains 117 V AC
0.4 A slow blow
mains 100 V AC
0.5 A slow blow
battery 12 - 14 V DC
2.5 A slow blow
2.8 Groundlift
Since the input is transformer -
balanced and floating, you should
rarely experience any hum. In unusual
cases, or if the source is unbalanced,
it may be necessary to lift the
connection between signal ground and
chassis ground (connected to
protective earth, PE), in which case you
will find a wire bridge inside the
amplifier - see figure beside. On
delivery the shown connection is closed and can be opened if
a hum interference occurs.
Warning!
Never disconnect the protective earth (PE) of the mains
power cable from the chassis ground!
2.9 Positioning
The loudspeaker chassis used in the M 50 is magnetically
shielded, so you are free to set the speakers right next to a
video monitor without needing to worry about adversely
affecting the screen. The sophisticated M 50 design gained in
an unified and neutral sound within the nearfield zone. Best
results are achieved within a hearing distance of 1 to 1.5 m.
Stereo pairs should be turned to the hearing area.
3. Operation
3.1 Mains switch
The power switch on the rear side activates the power supply
of the amplifier from both mains and battery sources. AC and
DC - input may be connected simultaneously. A red LED in
the front panel indicates, that the control monitor is ready.
3.2 Monitoring loudness
The M 50 is designed for nearfield monitoring. For best
performance and reliability it is recommended to avoid exessive
boosting of bass and treble by extern sound contols due to
large monitoring distances or bad positioning.