Midwest Audio Fest

It’s that time audio enthusiasts! Registration for the 2019 Speaker Design Competition is now open! Visit for details and to list your speaker project. We are excited to see all returning participants, and look forward to meeting some new designers this year, as well! Be sure your plans include a visit to the Parts Express Tent Sale for the lowest prices of the year, and the Audio Swap Meet where you can buy and trade with other audio fans. We hope to see you this summer! Vivian and Jill
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Audio Exciter Mounting

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  • Audio Exciter Mounting

    Many audio exciters have a circular voice coil with adhesive mounting. They say that you can just press the exciter against the panel to attach it. For the DAEX25SHF-4, I had problems with that. You can see that the exciter sags due to gravity, and the sound is low and distorted. I suppose this is due to the voice coil rubbing against the magnet. If I lift the exciter with my hand, to remove the sag, the sound is clear and loud. I have searched the internet for a discussion of this , and I have only found one post in a forum. It's kind of funny to me because the compliance of the suspension between the voice coil and the magnet is in the specification, Cms, but if you add a structure to support the magnet, you have changed that compliance. I also have not seen this addressed in any of the academic papers where they develop models of a DML speaker. Any comments on this would be appreciated. Thanks.