View Single Post
Old 12th August 2019
Lives for gear

Originally Posted by dinococcus View Post
Put your speakers outside and search the stereo picture.
After Toole, now is the ebu 3276 who are stupid.

This time of push the ignored button.
+1 Very smart move!

The level of ignorance and arrogance is rather astounding, isn't it? It seems that Andre, Toole, Cox, D'Antonio, Everest, Bert, you, Gervais, and probably even Marshall Long, as well as all the other experts, and now even the EBU, ITU, and likely the AES as well.... all are "novices" and have no idea what we are talking about! He apparently believes that there is only one source of acoustic "truth": himself.

Anyway, to get the discussion back on topic for the OT:

Speaker layout is not that complicated. Start with your mix position on the room center-line at around 1/3 of the room depth (front to back), or really anywhere in the range of about 30% to 45%, with your speakers against the front wall (because it is a small room), the acoustic axis of both speakers at about 120 cm above the floor (about 47 1/4") or maybe a little higher, with the speakers about 30% of the room width away from the side walls (anywhere in the range of about 20% to 35%, actually), and angled in so the both point at a spot about 45 cm (18") behind the mix position. The speaker angle doesn't really matter, as long as it is in the range of around 25° to 35° toe-in.

Call that layout your initial position. Then follow Boggy's procedure. Or just move the speakers further apart/closer together in very small steps, of about an inch or so (around 3cm) for each step, testing with REW at each new location. Look carefully at all of the REW data to find the position that gives you best acoustic response. Then, with the speakers in that position, do the same with the measurement mic: move it in small steps, forward and backward from the initial position, while also rotating the speakers to keep the correct angle, to find the best "new" location. Then repeat the process again with the speakers, moving closer together/further apart to see if there is an even better spot. And one more time with the measurement mic. This procedure will get you to an optimum position fairly fast. It's still a slow, tedious method, yes, but it WILL get you to a good layout.

You can also do it "backwards": with one single speaker set up on a tall stool at the mix position, and moving the mic around to all possible locations wheret he speakers would be. Both methods work. There are other methods too that can be useful. As long as you stick to the process, and move things in small steps, you can optimize rather well.

Then, once you have that "good" setup done, start with the treatment based on the response you are seeing in REW for that location. And once you have most of the treatment in place, repeat the speaker/mic moving process to see if you can further optimize your layout.

Forget about so-called "golden" or "perfect" layout ratios or mystical geometric shapes that don't actually exist: that's all pure garbage. There's no such thing as "one size fits all" in acoustics. There's no one single mathematical layout that works for every single room. All rooms are different, and speakers are different too. The math can lead you to a good starting point, but after that you will need to follow a process of moving things around, that involves real sounds and real acoustic analysis, to optimize. That's the way actual studio designers and acousticians do it. There's no myth, fantasy, or audiophile "magical stuff" involved. Just basic and acoustic theory to get you close, then physical optimization by "making a noise and moving things around".

- Stuart -