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41
Passive Point Source
Application Guide
•
The
Output Mode
preset menu enables individual
amplifier outputs to be switched off or configured
for Lo-Z or Hi-Z modes. In Hi-Z modes, a high-
pass filter can also be configured and applied to
the output. The number of outputs available will
depend on the amplifier model, input setup and
zone setup. For example, a two output amplifier
will have two outputs available if Lo-Z mode is
selected but only one output available if Hi-Z
mode is selected (
Diagram 4r)
.
Note:: Use of a high-pass filter with Hi-Z mode
loudspeakers is useful to avoid the possibility of
distortion caused by low frequency line transformer
saturation. Begin with the default filter setting of 70Hz.
If low frequency distortion is still audible, increase the
frequency setting one step at a time until the distortion is
no longer audible.
•
Driver Alignment
in the preset menu will allow
for delay to be set between driver passbands
(
Diagram 4o)
.
Diagram 4o
Preset Driver Alignment
• The
Polarity
preset menu enables the polarity
of individual amplifier outputs to be reversed
Diagram 4p
Preset Polarity
• The
Limiter
preset menu enables signal limiting
to be applied to individual amplifier outputs. Clip
limiting, peak limiting and RMS limiting can be
individually or collectively engaged. The Peak
limiter can be set to either automatic or custom
parameter values. The RMS limiter has default
parameter values that can be adjusted but has no
automatic option (
Diagram 4q)
.
Note: In automatic mode, the peak limiter parameters
adjust automatically in response to Crossover & Gain
high-pass filter settings.
Diagram 4q
Preset Limiter
Diagram 4r
Preset Limiter
