Quote:A mechanical siren works by drawing air in from the front, compressing it, and forcing it out then side slots. The idea of the directional cone is to redirect the sound to the front of the siren and not the side. As for recessing a Q, I would think that there is some decrease in the effectiveness if it is mounted like it is on Boston's new rigs, but I doubt that it is really noticeable.
Thank you... I knew that and I probably shouldn't answer a post after midnight......... on a Friday, after a couple of beers.........
Mechanical engineers build weapons, whereas civil engineers build targets.
When the man at the door said," Alcohol, Tobacco and Firearms", I, naturally assumed it was a delivery!
When the man at the door said," Alcohol, Tobacco and Firearms", I, naturally assumed it was a delivery!
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