I use a number of Black Diamond products. They work and I am satisfied with my purchases. However, they are not all cure and I ended up removing them from under my phono stage and preamplifier. I kinda' side with your dealer. It does make a difference where and how they are placed, but I would not describe the changes as more than subtle. By the way, for this type of product your dealer should take them back (at no charge) if you're not satisfied.
Black Diamond Cones ADVICE
Hi Carl,Albert,Greg...I just ordered 3 from Jeffs Sound Values.They told me to just stick them under my Rogue 99 and forget them.I don't think its that simple.I wish it was.Anyone have experiance with these?I plan on putting the cones point down directly on my shelf. Im not concerned with scratching the shelf its high density MDF and has steel particles mixed in.I cant afford THE PITS yet.Any recommendations for a DYI footer or do I even need one.