That is why I think the others sound like vehicle sirens on steroids. And as far as ATI, they amount to a RadioShack car alarm bolted to a pole...in my opinion.Whelen Rules wrote:Whelen took it out of production because they began to make lower pitched sirens. It may have been more money to make than it was worth(low sales). I know the Vortex series is very popular due to its high intensity output (SPL 129 dB @100 feet) and its low cost. Whelen makes improvments alot. They try to make sirens with a low tone and high intensity output to achieve longer distance in coverage which can be several miles in some cases depending on model. You have to give Whelen credit because they make the most effective efficient electronic sirens, that actually sound like a siren and not a ineffective way to highpitch mimic of a siren like the ATI's and even Modulators are too high pitch to be effective at long range.
I've never heard a Whelen in person; only sound clips on the internet.You have to give Whelen credit because they make the most effective efficient electronic sirens, that actually sound like a siren and not a ineffective way to highpitch mimic of a siren like the ATI's and even Modulators are too high pitch to be effective at long range.
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