My room has "zero" slap echo. Do I need room treatments?

I agree, I had no echo either. I found tall silk plants/trees and some open shelving for my vinyl placed at first reflection points to bring everything into place. I have open timber running across the ceiling which is great for helping with diffusion and de fraction.

Thank you for your suggestions.  My ceiling has wood beams as well and is probably helping as you suggested and I have a tall silk plant (8') in the front wall corner.  Hope it is helping as well.  Thanks tom6897.

The left wall is all glass with full length vertical blinds.  I have put a tall backed upholstered chair at the reflection point.  Thanks mijostyn.

I am going to try some diffusion behind the speakers on the front wall.  Should they be placed in same manner as you would place absorbers?  IE where the reflection point would be.  Thanks bkeske

I have absorption panels on the rear wall directly behind the speakers, but also diffusion panels on the adjacent side walls behind the speakers as well, and also between the speakers. Also have diffusion panels on the side walls well in front of the speakers,

But, that’s in my case, with my Vandy 2CE Sigs, in my room. 2CE’s and not like normal ‘box speakers’ and the sound truly surrounds them because of how they are designed. Thus, as I say, you may need to experiment for your particular speakers and room.

Without measurements, the best advice I have for you is to listen to your speakers 2’ away from them. The difference between that and your normal seat is your room.

Best,

E

most walls are 8" by 8" logs

No one else seems to have caught this. Logs are curved, in other words your entire wall is essentially a diffuser panel. Sound hits the curves and is scattered. That’s why you hear no slap echo.

This is however a bit misleading. The sounds that are scattered are in a frequency range related to the curves of the logs. You can calculate this, or you can experiment and hear it. What you will find either way is the sound is really well dispersed at the high frequency range represented by the diameter of the logs. The typical log in other words that curves out one to three inches diffuses frequencies that are around 3kHz or about what you hear when you clap your hands. Because our hearing is very sensitive at those frequencies. Those logs however don’t do such a great job of scattering lower frequencies. Lower frequencies are longer wavelength and as such the logs "appear" flat to them. Since we aren’t nearly so sensitive to them though they don’t matter as much.

You do not need the stuff the others are talking about. They missed the whole point. Its better to scatter (diffuse) than absorb, as absorption can create a dead closed in sound while diffusion creates more of a sense of space and openness. This is of course a balance, and one only you can decide what is best. Experimentation is always recommended.

Just thought I would point this out as no one else seems to have caught on to the log thong being nearly as relevant as it is.