Discussion of Outdoor Warning Systems
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What? There's a separate motor in the lower housing that turns the siren on a platform. It's not entirely dissimilar to what they'd use for the T-128 years later.SirensOfNewYork wrote: ↑Mon Oct 19, 2020 2:54 pmThese units are pretty interesting.
It seems the rotator is part of the siren, rather than the siren actually being mounted to the rotator, if you know what I mean.
Whelens came first. The AR-1600 uses 4-100W drivers into a standard exponential horn. They're stacked one on top of the other. The 6000 uses two 100W drivers channeling into a standard exponential horn. The horns are also stacked one on top of the other. Whelens use one driver per horn and on the 3000 those horns are arranged slightly off kilter from one to avoid cancelation. It's a very similar design but there are distinct differences.SirensOfNewYork wrote: ↑Mon Oct 19, 2020 2:54 pmNoticing the similarities between the rotating Alertronics and Whelens, which sirens came first, and who copied who?
Yes, what I mean by the rotator BEING a part of the siren is that the motor/rotator is part of the siren rather than being a seperate box.uncommonsense wrote: ↑Tue Oct 20, 2020 4:51 amWhat? There's a separate motor in the lower housing that turns the siren on a platform. It's not entirely dissimilar to what they'd use for the T-128 years later.SirensOfNewYork wrote: ↑Mon Oct 19, 2020 2:54 pmThese units are pretty interesting.
It seems the rotator is part of the siren, rather than the siren actually being mounted to the rotator, if you know what I mean.
Whelens came first. The AR-1600 uses 4-100W drivers into a standard exponential horn. They're stacked one on top of the other. The 6000 uses two 100W drivers channeling into a standard exponential horn. The horns are also stacked one on top of the other. Whelens use one driver per horn and on the 3000 those horns are arranged slightly off kilter from one to avoid cancelation. It's a very similar design but there are distinct differences.SirensOfNewYork wrote: ↑Mon Oct 19, 2020 2:54 pmNoticing the similarities between the rotating Alertronics and Whelens, which sirens came first, and who copied who?
The Quadren has absolutely nothing in common with a Whelen omni. Each quarter of a cell has 4 100-Watt drivers with a horn above and below the cell (meaning every other cell is a dummy). The intent was for the Quadren to be placed in sections, as seen in the ads posted on this site. The circular shape is a natural extension of creating a 360 degree horn. The Quadren shares absolutely no design similarities, besides an unavoidable passing visual similarity, with Whelen.SirensOfNewYork wrote: ↑Tue Oct 20, 2020 11:40 amAnd referring to the second question you answered, it seems that ACA/ASC took inspiration from a few Whelen sirens, the Quadren a specific example with its brackets and cell shape. The cells are just fatter; if you slimmed them down they would look like a Whelen