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TRx3210 High Frequency Attenuation Switch
Each Carvin TRx3210 Line Array loudspeaker contains a
high-frequency section that is designed for extremely high
sound pressure level (SPL). When the TRx3210 is used in
large multi-box arrays, the mid and low frequency speakers
mutually couple and produce higher SPL's. The more speak-
ers used, the more output and coverage is accomplished. In
smaller configurations of less than four units, it is recom-
mended that the high frequency section of each box be lower
in output volume (attenuation). Depending on the amount
of boxes used, room acoustics, and application, different lev-
els of attenuation will be needed to match the volume of the
mid/low frequency drivers.
Another use of the attenuation switch is to control shading
in multiple-box arrays. In larger configurations, it may be
specified to have the upper boxes produce full output of the
HF frequencies to project longer distances to the rear of the
venue, while the lower boxes are attenuated for the near-field
listeners.
The HF Attenuation switch has three user selectable posi-
tions 0dB, -3dB, and -6dB. Since every room is different, the
level of attenuation should be selected accordingly.
Note: This switch is only functional in FULL RANGE passive
mode. This switch has no effect in BIAMP mode.
Remove rubber plug marked H.F. ATTENUATION from
the connection panel. Using a small flat-head screw driver,
carefully insert screwdriver into opening and slide switch
to the desired attenuation setting. Replace rubber plug after
change.
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