Recent content by Bruce Black

Based on your REW data, I'm seeing some drop around 100 Hz., but nothing of any value. It also looks like you could use some help at 50Hz., but the devices do nothing. You might look into using Helmhlotz resonators tuned to those frequencies. These are easy to build, if you have basic wood...

I have the deepest respect for Everest, however I've found a few errors, of a sort, in his book ( I find fourth edition to be the most comprehensive. But I've found that the best LF response comes from treating the peaks and leaving the rest alone. With bass traps, you pull everything down, the...

First, look at your decay plots. Unfill them so they show as traces, and set the slice interval at 60 ms. Leave the initial 0ms./direct sound trace, and then add each other trace one at a time. This will show you what your room is doing to the sound over the course of ~1/2 second. This will...

If you have someone who can build some resonators, you can look at your REW waterfall data to determine what frequencies have peaks that sustain over time. Those are the most likely to cause issues for you. Have some resonators built to those frequencies, or close, and install them with the...

Hi Arsis. I strongly recommend you that you use target, tuned low frequency absorbers instead of broad band bass traps, like Helmholtz resonators. It's much more effective to absorb the problem LF peaks than to just try to bring all the LF down with traps. That approach removes the good LF you...