Do they really help that much and how should they be arranged? I watched this recently posted YouTube video and it really piqued my interest on the subject. I know every listening environment is different so please post some pics if you can, thanks!
Ultimately that depends on thickness, GFR of the material used, and their location. Absorbers can deal with bass given the right material and enough thickness, just not sub-bass.Sound absorbers change the tonality of a speaker since they eat high frequencies but can't do anything to bass.
This depends on whether you're trying to break up an echo (diffusers) or trying to bring reverb times down (absorbers).In a big room, QRDs might be a better choice.
It depends a lot on the speakers. In a smallish room, to kill early reflections, I think most people would get a lot out of them.
In a big room, QRDs might be a better choice.
Sound absorbers change the tonality of a speaker since they eat high frequencies but can't do anything to bass.
So you believe absorbers like corner bass traps are basically just a "snake oil" marketing ploy?
I hope that's not what you meant by "Sound absorbers change the tonality of a speaker since they eat high frequencies but can't do anything to bass".
Again, this depends heavily on thickness and placement.Conventional panel absorbers made with 703 or rockwool or whatever will absorb high frequency energy and do very little to bass.
Again, this depends heavily on thickness and placement.
Regarding bass treatment, it's true that simple panel absorbers are ineffective. But resonators and traps can be quite effective even at very low frequencies. Before/after measurements (REW frequency sweeps) showed that my home-built tube traps made a 7 dB difference at 40 Hz.
So these measurements are from one point in space? Same point for both measurements?The tube traps I made are 21-24" in diameter and 7' tall (floor to ceiling), using 1.5" fiberglass. Measured in REW from the listener position, before (no tube traps in room) and after (tube traps in rear corners). Here's the graph, dotted line is "before". You can see they made a big difference from 60 Hz and below.
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