[LAU] problem with LFE output "leaking" into rear speaker

I have an interesting problem. I'm using optical outputs to a d/a with 8
output channels (Frontier Tango24), but I needed 10 output channels. So
for the l/r rear channels I'm using the spdif outputs from my RME card
connected to an Orei DA21 2 channel D/A unit. This seemed to work fine,
but when testing I limited the Ecasound output to LFE only, and I noticed
that somehow the LFE signal gets sent to the l/r rear amp in addition to
the sub amp, and I hear LFE coming out of my small(er) rear speakers. (I
put a 50hz high-pass filter on them for now, until I figure this out.)

I'm guessing this might have to do with 32 bit vs. 24 bit output or
something. Here's the line in Ecasound that outputs to Jack:
-a:rear,LFE,sub_left,sub_right,center_sub,center_low,center_mid,side_low,
side_high -f:f32_le,10,48000 -o:jack

Any ideas?
Thanks,
John

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Received on Sat Dec 9 16:15:02 2017