Question

I want to use Eris Speaker for my electric organ.
But I have not enough space, so I consider four E5 XT speakers, 2 speakers on each side.
If 2 speakers are close to each other without no space or some space, within 10mm, is there any problem with them?
Or is it better that I use old E5 rather than E5 XT?

Answer 1

Yes, it’s a huge problem for your stereo image.  You want your monitor placement to form an equal lateral triangle with your head.  Most guidance suggests a 60 degree angle from your head position.  Mixes made on monitors placed as close together as you stated above will not sound good at all.  Do a quick search on monitor placement.

you could instead stack them vertically so you gave roughly the same distance for both sets of monitors.