Bass leaves after amp warms up?

I will ask my dealer Audio Salon if he would lend me an amplifer to try this procedure.
Also to Ralph,I tried your suggestion of pulling out interconnects when the bass fails then reconnecting..
I'm afraid that didn't work.

AP

If someone lives close by in NYC would be welcome to come here & troubleshoot.
I admit not being an expert on these matters
Perhaps I'm doing something wrong

As I have followed this post and looked around on the net, I just found this review on the AudioPrism III conditioner. I believe Fishing uses the II, which is very similar. What is interesting is the comment made in the 3rd paragraph from the end. They also make reference to a similar conditioner. Hopefully someone with more technical knowledge can explain why they say this.

http://www.soundstage.com/revequip/db02.htm
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Foundation II is placed on the floor behind components.
I've tried plugging the amp directly in the wall. Ocassionaly it would restore the better sound but generaly not.
I'm very impressed you noticed that in the article as it was easy to overlook.
I'll try moving the power conditioner or adding feet.
There certainly are alot of details to this hobby..
I allready know it's expensive,fustrating & not g/f friendly.

Fish . . . I looked the dealer up on the internet. It appears he carries Bryston. If a Bryston amp can't drive those speakers, nothing can. I like the idea of trying an extremely robust amp like a Bryston.

But do check out Zero the autoformer web site. As I said, I seem to recall, if not satisfied, I think the guy will take the Zeros back and issue a refund. If nothing else, check out the web site to understand what Zeros do. In short, they are an impedance multiplier. Simply stated, under one setting, the Zeros can make your amp think its driving twice the impedance load than it really is, i.e., nominal 4 ohms x 2 equals 8 ohms. Your amp will take a vacation with shades. ;>)