17
faithfully follow the MIX VU-meter (11) indications, in order to have a real perception
of the signal output.
As the MIX VU-Meter is monitoring the MIX bus and not the outputs, when the
internal extra-gain of 12dBV is set on the outputs (look at Configuration Diagram) and
when the HOUSE or BOOTH potentiometers are at their maximum position, the VU-
Meter indications will be displaced of +12dBV: 0dBV corresponds to +12dBV.
HOUSE output (20) is electronically balanced so the unbalanced level (21) always
matches with the balanced level (20).
WARM2 has extended headroom: its maximum output without distortion can reach
21dBV (23dBu)!
Take care of the devices connected to the mixer outputs checking the VU-meters and
please try to stay away from the red light zone!
10. FURTHER CONSIDERATIONS
Ground loops
Avoid that the sources connected to the mixer and the devices connected to its
output have their ground reference interconnected; it means that the ground
reference should never have two or more different paths, because hums and noise
can appear influencing the sound quality. In order to avoid ground loops, ensure that
the shielding of cables, if connected to the chassis, are never connected with each
other.
Background noise
The use of active circuitry can yield, depending on the configuration, to a significant
noise level. The WARM2 have been specifically designed with a very reduced noise
figure. Anyway, the noise level will always depend by the correct use and installation
of the mixer and by the correct gain chain. It is not the same setting up the channel
potentiometer at "2" and the HOUSE level at "10" that vice versa. In the first case you
get a poor signal to noise ratio that will be fully amplified by the master output while
on the second we have a good signal to noise ratio only amplified by "2". As a result,
the background noise is greater in the first case than in the second one.
To Next Page
Loading...
