Serendipity coupled to acoustics basic can make miracles!
I just walked as every morning, i stumble on an empty 6 foot cylinder made of hard -plastic abandonned in a field...
I entered in my dedicated acoustic corner ( near listening field with my modified small speakers).
I fix the tube with the proper wood closure at the end and put the open part vertically between my two speakers...
I need only one trial tuning ...
Very audible improvement at the right frequencies range resulting in a better listener envelopment and a better timbre ...Thanks Saint Helmholtz...
Pay attention walking and pray the right god....
Cost : peanuts....
Nothing is invisible in a room, especially the sound...
All is audible in a room, especially through silence...
