Mix position in a corner?

Started by Refresher on 9 October 2004. 2 replies.

Originally posted at johnlsayers.com, topic 2456.

Hello everyone! I did a search under 'corner' and 'mix position' and came up with 100's of posts but nothing relevant to my question. Please re-direct me to a link if you have one! I have small room 12x14 and want to move my desk and mix position facing a corner. Is there an inherent problem with a corner vs. a wall position for mixing? The room has traps, absorbers and diffusion but my gear takes up alot of the room. Mostly concerned that the corner might pose troubles. Any insight would be marvelously appreciated as is the site itself! Thank You.
There's at least one thread where I listed the pitfalls of a corner setup, but it's probably just as quick to repeat it here - \ 1 - any sound above approximately 200-300 hZ, when fired into a square corner, will come back parallel to the incident angle - so the corner behind you will shoot your left speaker's output right back to your right speaker (and ear), and vice versa. 2 - The corner in front of your mix position will do the same for any diffracted sound (wrap-around caused by the speaker box corners) so between (1) and (2) you get both channels in both ears, only screwed up by dissimilar path lengths which cause comb filtering (flanger-like effects) 3 - in a small room, "catty corner" uses up quite a bit of extra floor space, which may or may not be a problem. There are ways to minimise these problems, which will be even WORSE if it's a square room (any two dimensions being the same or multiples of each other is BAD) The downside is, it may take too much absorption to accomplish killing early reflections in the room to allow the room to be "live" enough not to sound really dry - Here's a rough drawing showing some of the problems - Note that even where I've NOT shown absorption, it SHOULD be there - any time you have reflections coming back to your head that are less than about 20 milliseconds (roughly 22 feet) later than the direct sound, your brain integrates those reflections with the original sound - this causes comb filtering problems, where different frequencies are changed in phase by different amounts which causes all sorts of imaging problems, phasey sounding audio, etc - so in reality, putting the desk in a corner won't work well at all, unless you WANT a totally dead room for some reason (trust me, that's not likely) So, to recap - all 4 walls totally absorbed, at least 4x6 feet of ceiling absorbed over mix table, big bass trap behind desk, same at the rear, possibly even two more in the other two corners - may as well be an anechoic chamber, except to REALLY do that you'd need about 6 feet of wall depth per side or more... If the room were large enough, you might get away with a corner mix position - it would need to be about 20 to 25 feet on a side before you could maybe replace all that absorption at the rear with diffusors, then you MIGHT get a good sound without losing too much high frequency and upper mids due to all the absorption. Oh, I know speakers are usually tilted toward the mix position, but I did this in Paint - not too easy to do that. Hope that helped... Steve
Image not preserved: CnrMix1.JPG
Steve, Thank you!! I sincerely appreciate the help! Have a great weekend!