Home Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Re: Absorption/Diffusion...?

It would be virtually impossible to get your room to sound like an anechoic chamber. You would need to cover ALL surfaces with significant depths of absorbing materials to absorb all frequencies. That simply isn't on in the average listening room. or even in most non-average ones.

If you just bass trap corners, you still have virtually all of the wall space and ceiling space untreated and these still provide considerable reflections. Bass traps alone won't get you anywhere near an anechoic state.

If you add absorption at the early reflection points, you still leave a lot of wall/ceiling space exposed but how much is left exposed is going to depend on both room size and the size of the panels you use to treat the early reflection points. Obviously things will start to get more critical in a smaller room, but still won't approach true anechoic status.

One thing that you need to realise is that with bass traps and with absorptive panels, you are very definitely reducing the amount of reflected sound in the room. That reflected sound can contribute significantly to the overall volume at which you listen so music played at the same setting on your volume control is going to sound softer in a treated room than it will in an untreated room. You need to turn the volume up in treated rooms in order to get the same listening level. If your amp isn't large enough to deliver the added volume level and starts to run out of steam at your normal listening levels, even if only on dynamic peaks, things are definitely going to start to sound "lifeless".

David Aiken


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