I hope you are not yelling at me, because I have been nothing but courteous to you and hopefully helpful. I am only suggesting that it is not worth spending the $100+ on shipping to send these speakers back and get nothing in return when they are under warranty and will be repaired for nothing.

The vintage Onkyo M-504 is not extremely valuable anyway:

http://cgi.ebay.com/ONKYO-M504-AMPLIFIER-/220781655768?pt=Receivers_Tuners&hash=item33679cb6d8

You can pick them up for about $300.

Now, if you do not like the sound of your speakers, that's a different story.

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