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MX
Series
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MX24
Operating
Instructions
ta
x
Operating Your MX24: Headroom Monitoring System
With up to 16 possible sources connected, monitoring them all would be virtually impossible,
so the MX24 takes care of this by watching all incoming levels on all formats and alerting you
to any channels that are close to running out of headroom.
As previously explained, the LINE MONITORING section on the front panel allows any
individual channel to be selected and auditioned via headphones, and the high-resolution
headroom meter shows the level on the chosen channel.
In the background, the unit is also monitoring all other channels, and if any peak at within 2dB
of the headroom ceiling (so on an analogue channel this is +20dBu), the red LED at the top of
the meter will begin to flash, irrespective of what the rest of the meter is showing.
The attack time on this monitoring is instantaneous, but it has a 3 second hold time so even
the shortest peaks will be caught and displayed. To determine which channel (or channels)
have hit the threshold, cycle through all connected channels until the meter shows full scale
flashing in time with the red LED. In this example it’s analogue channel 4 on set A.
Remember, this is not showing that the unit is clipping — it’s an alert to turn down any
incoming source level that is close to clipping. The MX24 has output limiters to prevent it
from generating a clipped output no matter how many sources are selected.