In article ,
Don Pearce wrote:
On Wed, 21 Mar 2018 16:25:51 -0000, "Brian Gaff"
wrote:

My bedroom is almost square with one corner with an airing cupboard and
the next one sliced off by the chimney as it runs up from the floor
below. It has this middle sounding honk no matter what speakers I use.
Short of coating all the walls with old cardboard egg boxes I wondered
if these new miracle speakers from Sonos might help, or is this room
auto compensation stuff just hype as to me it seems that if there is a
resonance you won't stop that no matter how you adjust speaker
frequency response. Brian

Egg boxes never did anything, but if you have a spare duvet - hang
that on a wall. I did a test in my study years ago - a microphone six
feet away, and comparing with and without the duvet.

http://www.soundthoughts.co.uk/listen/duvet.mp3

Yup. Although decent thick curtains may look better.

--
Small asylum seeker wanted as mud flap, must be flexible and willing to travel

Dave Plowman London SW
To e-mail, change noise into sound.