Onkyo TX-RZ3100 User Manual page 19

"Full Band" can be selected only when "Front" is set to "Full Band".
If an item cannot be selected even though connection is correct, check
that the settings in "Configuration" ­ "Speaker Channels" matches the
number of connected channels.
Surround
Default Value: 80Hz (THX)
Select the crossover frequency from "40Hz" to "200Hz" to start outputting
frequencies for each channel.
"Full Band": Full band will be output.
"Full Band" can be selected only when "Front" is set to "Full Band".
If an item cannot be selected even though connection is correct, check
that the settings in "Configuration" ­ "Speaker Channels" matches the
number of connected channels.
Surround Back
Default Value: 80Hz (THX)
Select the crossover frequency from "40Hz" to "200Hz" to start outputting
frequencies for each channel.
"Full Band": Full band will be output.
"Full Band" can be selected only when "Surround" is set to "Full Band".
If an item cannot be selected even though connection is correct, check
that the settings in "Configuration" ­ "Speaker Channels" matches the
number of connected channels.
LPF of LFE
Default Value: 120Hz
Set the low­pass filter for LFE (low­frequency effect) signals in order to pass
lower frequency signals than the set value and thus cancel unwanted noises.
The low­pass filter will be effective only on sources with LFE channel.
The value from "80Hz" to "120Hz" can be set.
"Off": Do not use this function
Double Bass
Default Value: On
This can be selected only when "Configuration" ­ "Subwoofer" is set to other
than "No" and "Front" is set to "Full Band".
Boost bass output by feeding bass sounds from the front left and right, and
center speakers to the subwoofer.
"On": Bass output will be boosted
"Off": Bass output will not be boosted
The setting will not automatically be configured even if you performed
AccuEQ Room Calibration.
3. Distance
Set the distance from each speaker to the listening position.