I bought the MR2, actually i wanted to buy BX2 but the boss told me dont waste money since you are using it as surround just buy mr2 is aldy very good

True

Normally front n surround setting of spk to big or small will better

Small. For HT all low frequency should go to sub therefore all speaker set to small

I have mine all set to small as well.

No right or wrong on this, it depends on the spec of the speakers.

If surround wire say 20 meter long per side can any sound degradetion or some lost sound

Nope as long as the awg is 16 or more.

20M? I thought your house is 100M long
For that length, even 18AWG are more than enough.

How you finding the atmos speakers.

A2040 can only have max 5.2.4 speaker configuration right?

Does A2040 support dual sub ?

Yes can support 2 sub

Well the atmos really got effect, but must got atmos disc. Ya the 2040 support 7.2.4

Without Atmos it still support upscaling Atmos right?

2040 can support 7.2.4? I thought max 9 speakers?

What is up scaling atmos?

Never hear before upscaling atmos,got video upscaling thats what i know

I read in a forum about the upscale of Atmos but can't find it now.

https://www.avforums.com/article/a-guide-to...und-sound.10476

In that article it says that Dolby has scalable algorithm for Dolby TrueHD and Dolby Digital Plus. Just wonder whether it's true and able to feel the effect on non Atmos content.

Well in a normal 7.1 or 9.1 setup there are height speakers as well. So most likely it will create certain sound effect from the top down but of course this is any lossless is able to produce without atmos.

I see. I thought it would upscale atmos. Let me see if I can find the forum I read before.

the name called dolby surround.