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Article #1474Urgent: Calling all know it alls
From: Mark Joe
Date: Wed, 18 May 1994 02:46
Date: Wed, 18 May 1994 02:46
32 lines
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2647 bytes
This is in reference to a little-known speaker design named the Heil (sp?) Air-Motion Transformer. For the duration of it's brief career as a marketed product, it advertised "Sound clear as Light", in addition to it's high quality, it is up to 25 times more energy efficient than your standard speaker. I have posession of one working model and a partial model of a slightly different design. It's rather clever design is hard enough to describe in person, so I won't even make the attempt here unless someone is really dying to hear about it. If there is anyone out there who has any knowledge about this device, I would be greatly pleased to recieve some help with a few questions I have about it. It's clear that a strong magnetic field is involved. In one of the model's I have, two large magnets are located about an inch and a half BELOW the actual mechanism. How is this useful? In what way exactly is the magnetic field used? Why must it be so large? If you've seen this particular model, you've seen a strangly shaped piece of aluminum(?shiny metal) located directly between the two large magnets and extending to almost touch the sounding mechanism.. What is that?! Any further information on the Heil (sp?) Air-Motion transformer would be greatly appreciated! At the moment I don't know all that I don't know.. Please send any replies to CHI@vms2.macc.wisc.edu, because as far as I know, I am only subscribed to Phys-l, phys-stu, and physhare and I am afraid I might miss postings on other lists. If you are subscribed to the above mentioned list and the people won't reject to it, I will read it there too if you post it. Looking forward to any information or discussion. Mark Joe CHI(College Honors Involvement) Email: CHI@vms2.macc.wisc.edu BITNET: CHI@WISCMACC.BITNET
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Date: Tue, 17 May 1994 21:46:00 CDT
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From: Mark Joe <CHI@MACC.WISC.EDU>
Subject: Urgent: Calling all know it alls
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