Need help with Base Management in 5.1 system

[Nathan Mai]

Hello,

So I need help with a configuration to do manual base management for a 5.1 system via HDMI out to my receiver.

Note that, I'm actually trying to do 5.1 channel audio procession to output to 7.1 HDMI pc out to my AVR. The reason being that my stero front speakers are bi-amp. So Im using the extra SBL/SBR + L/R just for my front L/R speakers.

Here's my basic configuration so far:

L ----> L
----> SBL
R -----> R
------> SBR
C -----> C
RL ------> RL
RR ------> RR
SUB --------> SUB

Copy: L=L R=R C=C SBL=L SBR=R RR=RR RL=RL
Copy: SUB=0.167C+0.167SUB+0.167RL+0.167RR+0.167L+0.167R (trying to not have the SUM to add up more than 1)

.167 is 1/6, thus I'm just trying to send all 5.1 channels (C,SUB,L,R,RL,RR)to the sub.

Channel: L R (sending all >700 Hz freq to tweete -- bi-amp front speakerr)
Filter: ON HP Fc 700 Hz

Channel: SBR SBL (sennding 80<freq<700 Hz to woofer -- bi-amp front speaker )
Filter: ON HP Fc 80 Hz
Filter: ON LP Fc 700 Hz

Channel: SUB
Filter: ON LP Fc 80 Hz

Is this the correct setup? Pretty much Im hoping that this will manually send anything below 80 Hz from all channels to the SUB channel. I'm assuming that the SUB will still be able to fully handle the .1 LFE content in this setup.

Thanks in advance!

[Jonas Dahlinger]

The channel names SBL and SBR are no real channels. Do you copy them to the channels SL and SR later? Otherwise the audio data in them is just lost as it does not reach any output.

The command

Copy: L=L R=R C=C SBL=L SBR=R RR=RR RL=RL

can be reduced to

Copy: SBL=L SBR=R

as the other assignments do not cause any change.

I am not sure if it is correct to add the SUB channel to itself with a factor of only 0.167. If the source contains e.g. music on the channels L and R and low frequency effects in the SUB/LFE channel they would only be half as loud on the SUB channel as the music. Maybe the factor for the SUB channel should be twice as high or even as high as the sum of the other channels. But I'm no expert on this.

Otherwise, your configuration looks for me as if it should do what you want.