Bosso thanks for the response. I will try and answer some of your questions.

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The first thing I'm curious about, is how you have your system configured to send only the LFE to the sub controller/amp when in 6 CH BYPASS?

Denon sub out --> 950 sub in --> dedeicated sub controller/amp --> speaker

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The second issue regarding phase alignment between your mains and sub is that, unless the mains and the sub are exactly the same distance to your meter, you're not likely to ever have the phase correct if you only have a normal/reverse phase switch as your tweak.


The subs(2) are directy beside the mains. Can't get much closer together and they are the same distanse from the meter. The mains are bi-amped using the Main L/R but were turned off for my testing.

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I personally think that the problem arises from the way digital BM works, creation of a duplicate signal for each channel, 1 that's HP filtered and the duplicate that's LP filtered (selectable triple crossover), volume adjusted and sent to the summing block to be combined with the LFE signal, which has a global, 120 Hz LP filter applied.


I was only using the analog connections.

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Analog BM is a simpler 80 Hz HP/80 Hz LP Linkwitz/Riley active crossover.


Whatever the 950 uses through it's sub out, the the bass management set to off.

I have all the filters disabled and am only using the analog connections. I am not seeing the difference when switching between bypass and digital (although I'm sure I would) because I havn't left the 6 channel bypass yet. The Chesky disk is in DVD-A and that is all that I have used to setup with.

While typing this I went and tried a few other things. I let the Chesky disk repeat it's 60Hz phase test with the SPL meter reading 80dB for "in phase" and 90dB for "out of phase". Switch polarity on the sub and nothing changes. Remove the LFE cable from the DVD player and the SPL readings are 80dB for both phases. Switch sub polarity and nothing changes. I wouldn't expect the sub polarity switch to change anything since during this setup I'm not trying to match the phase of the sub to anything.

So it appears that the 950 sums L/R bass and passes it to the Sub output(double bass syndrome) along with the bass being fed from the DVD players LFE output. But it also appears there is no increase in SPL if the signals being fed are in phase. Does that make any sense?

Anybody have a work around that I might try or should I just do as bosso says and use music. bosso give me a musical suggestion in DVD-A if you can.
Thanks