"Greg" wrote in message
m...
Get some M20AD from a company called custom audio designs
(www.customaudiodesignns.co.uk). It's a kind of foam mat that you
stick on the wall (15kg/sqm). I got some last week and it did the
trick brilliantly.

Greg
Thanks Greg,
did you also put the two layers of plasterboard on as well?
Mick Cant.