Have you been in this situation: 

You are mixing in your room, maybe with some basic treatment, and whenever you take your mixes outside of the studio, they turn out a little bit harsh, just a bit too bright?

There's just a little bit too much high end in your mixes. 

Consistently with every other mix, you're just obviously boosting the high end too much. 

And because you're also feeling that your room is overdamped you're wondering if the high end is just a little bit too controlled in the room. 

Is that the reason why you're constantly mixing your records too bright?

And will diffusion help? 

Will putting up some scattering around the room help to get that high end in check, maybe lengthen it a little bit, balance it out in a way so that your mixes don't end up so bright anymore?

Now this seems to be a logical conclusion at first glance:

Overdamped high end ► too bright mixes. 

But in fact, there's a crucial thing that you're missing here, and that's what I want to talk about in this week's video.