Originally Posted by yankee14
I set the crossover at 120 to my speakers, L+C+R +SL+SR . I have them set to small.I want the sound under 120 to go to the subwoofer. I have the setting at LFE. I read the LFE to indicate that by saying "the low frequency signal of the channel for which the speaker is set to small to the subwoofer signal and output it".However is the LFE +MAINS what I am doing and do I need to change the setting.The LFE+MAINS says : "add the low frequency signal of all channels to the subwoofer signal and output it."
Hi yankee, welcome. I'll also offer my attempt to help clarify some things.
I see the 1910 manual have been rewritten but it's still in native Denonese.
We're talking about p 25-27, right?
Of course one should first run Autosetup, p22-23, following the Audyssey Setup Guide. Then on p 24 check Autosetup Results making sure all speakers are set to Small. Chris of Audyssey (cofounder and CTO) indicates that all speakers should always be set to small for proper bass management. At this point you should also note the individual channel xover results. Following the Guide, these can be reset higher (never lower), if desired. These determine the frequency below which all content is redirected to the sub channel.
On p26 the Bass Setting should be LFE not
LFE+MAINS as the latter results in "dbl bass" (the freq below the channel xover are kept in the speaker and
sent to the sub!). LFE+MAINS is for idiosyncratic circumstances, requires big capable front speakers and is generally not
a good idea anyway, so do not worry about it. You want
the sub handling the bass, taking the load off your satellite (confusingly often all channels except sub are referred to as "satellite", not just the surrounds) speakers and your AVR. This also takes advantage of the fact that those low freq's taken from the satellites are now added in with the LFE content to create the sub channel output and those critical problematic low frequencies are treated to extra Audyssey filters before being sent out to the sub.
Also on p26: the LPF for LFE setting is confusing in that this is not
a xover and according to Chris of Audyssey it should not even be adjustable. It should be set-it-and-forget-it at 120 Hz, which simply allows all the LFE channel (the .1 of 5.1 and 7.1) content through to the sub. There is no content over 120 in that channel.
For 2.0 (CD) material, although there is no ".1" content, the material below each channels' xover is sent to the sub channel for proper treatment/bass management.
Hope this helps.