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Multi-way Loudspeaker Setup
During the initial Theater Definition setup, you
have the option of defining the front LCR speakers
as multi-way. Doing so will assign 2 or 3 output
channels to each speaker instead of 1. In this
configuration, more than 1 amplifier will be used
per loudspeaker, and the SP4 will perform the
crossover function for each loudspeaker.
All settings in the Bass Management section
detailed in "Individual Channel Adjustments" on
page 17 and "Expert Bass Management" on page
19 also apply and will not be covered again here.
This section only describes the differences notable
for multi-way loudspeaker configuration.
1. Signal
Note that in this example (Left Front is a 3-way
active loudspeaker), Each of the first 3 channels
receives the same Left Front signal.
2. Channel Name
By default, the channel names are named by
the signal they receive and proceeded by a
sequential number. For clarity, you may wish
to rename these according to the signal they
reproduce e.g. Left Front High, Left Front Mid,
Left Front Low.
3. Multi-way Management
Use this section to filter the signal for each
section.
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Section: Choose whether each channel reproduces
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Full Range, Low Pass Filtered, Middle (band pass), or
High Pass Filtered audio. Two-way speakers will not
have Middle option.
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Crossover Frequency: When the section is chosen
as anything other than Full Range, set the crossover
frequency for the Low and High Pass filters for each
section.
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Slope: For each filter, select a slope. Options are
Butterworth 6dB / oct, Butterworth 12dB / oct,
Butterworth 18dB / oct, Linkwitz Riley 12dB / oct, and
Linkwitz Riley 24dB oct.
4. Delay
Set the delay of each section. For active multi-
way loudspeakers, it may be helpful to do this
in milliseconds and measure time-of-arrival
differences at the crossover point when using
LR or BT6 filters to time align each section of a
multi-way loudspeaker.
5. Level
Active multi-way loudspeakers almost certainly
have different sensitivities per module. Set the
relative level of each here. When possible, use
0 as the maximum figure and attenuate other
channels to match the loudest channel. You
can also set global makeup gain for the entire
theater as described in "19. Level" on page 18.
Channel EQ
Each channel can have up to 10 bands of parametric
EQ applied manually. To design EQ curves for
any channel, click the EQ button under the Status
column for that channel. Remember to SAVE often!
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