Amate Audio X210 Manual De Usuario página 33

X210/X215W/X218W3K/X21T
H) AC INPUT/OVERVOLTAGE PROTECTION: These leds show the status of the
AC mains supply.
 POWER ON: (Blue) When lit, the equipment is ON and the AC input level is
within the permitted range (200 to 250 VAC).
 OVERVOLTAGE PROTECTION: (Red) When activated, the AC voltage is
permanently out of the permitted range of the equipment (>250VAC), so it will
remain under protection until this condition is solved. Revise your connections
and mains power installation and consider that other equipment connected to
this line may have been damaged.
I) AC MAINS INPUT/LINK: Mains supply connection via PowerCon.
 Blue connector for AC in.
 Grey connector to feed other units in parallel. Linking up to 2 units is possible,
provided that a quality cable of a minimum section of 3x2,5 mm
Connecting more than 2 units in parallel may lead to a voltage drop in the cable
that will reduce the equipment performance.
6. CARDIOID SUBWOOFERS
X215W, X21T and X218W3K enable the combination of three or multiple of three
subwoofer cabinets in an array to provide exceptional directivity at low frequencies.
High directivity at low frequencies has two main effects on the sound field: firstly, the
low frequency level behind the subwoofer cabinets is greatly reduced; secondly, in
closed venues the diffuse sound field at low frequencies is reduced so the low
To increase the directivity at low frequencies we must transform the omnidirectional
performance into a cardioid performance. This can only be achieved by various
sources, arranged in a certain position, to which we apply a specific phase, filtering
and delay. That is, we need to reproduce two signals with the same frequency and
similar amplitude which will have a difference in phase of approximately 180º at a
certain point of the sound field.
If the phases and delays are well calculated the result is a system in which we
cancel the energy of the back and not the one of the front.
This can only be achieved with cabinets that incorporate independent delay units on
their DSP, as X215W, X21T and X218W3K.
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frequency reproduction is much more precise.
The typical operating range of a traditional subwoofer
tends to be like a monopole, i.e. tends to radiate with
the same energy in all directions. This behaviour
implies that the control of radiation at low frequencies is
very difficult because the wavelengths are very large
compared to the size of the source (8.5 m at 40Hz).
Fig.20. Traditional polar pattern of a subwoofer at 40Hz
Oct 2017
2
is used.
Amate Audio