Vortex series

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• Whelen WPS-4000

Vortex series
Company	Whelen Engineering
Produced	1990-Present
Type	Electronic
Sound output	122-129

General

The Vortex-R Series is a line of electronic sirens produced by Whelen Engineering. They are essentially 4000-series siren heads with Type-1 control cabinets that lack voice capability much like the Omni-Alert series. The Vortex-R Series contains a rectangular rotator unlike the square rotator in the 4004. Unlike the 4000 Series, one- and two-driver models were offered. Older models have a large fin mounted on the rear of the driver assembly, a trait inherited from the 4000 series.

A Vortex Finback in Blissfield, MI(amtrak3501)

Models

Model	Output dBc	Drivers	Product Sheet
VORTEXR1	122	1x400W	VORTEX1
VORTEXR2	124	2x400W	VORTEXR2
VORTEXR3	127	3x400W	VORTEXR3
VORTEXR4	129	4x400W	VORTEXR4