@gdhal is right. It's not that Sonex doesn't do ANYTHING. It's just relatively ineffective compared to the average panel from GIK.
I also have to say, having had a chance to hear rooms heavily treated with ASC products, GIK makes a superior product, for far less cost.
Best,
E
I also have to say, having had a chance to hear rooms heavily treated with ASC products, GIK makes a superior product, for far less cost.
Best,
E