Hi all.
On my travels I came across this rather bonkers thing. It's called a PMR (Passive Multi-vocal Resonator) - Sounds crazy and rather like something out of Dr. Who or another 1950's SCI-FI film.
You place it directly in front of you between the speakers. Full article below.
http://www.stereotimes.com/acc010412.shtml
Anyway.. has anyone experienced one of these?