Well, Peter it now looks as if your setup is rather similar to one of mine since I got a EP500 a couple days ago(what a coincidence; great minds think alike?)to use with my M22s. After sweeping the plaster and broken glass from the floor and calibrating levels more carefully I finally was able to hear what the opening of Also Sprach Zarathustra was supposed to sound like. Wow what a sub!

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Enjoy the music, not the equipment.