From iamthomashughes@yahoo.co.uk Mon Jan 04 03:17:50 2016
Subject:Re: Motion Sound Tweeter

No problem! -I went bananas trying to locate a crossover fuse a few months ago, until someone pointed out that it looked like an auto bulb. It's a good idea; when the sound gets too loud, rather than blow either the tweeter or the fuse, the bulb simply lights up, acting as a sort of compressor.
(Of course, if it lights up too brightly, the bulb will blow!)