[quote name='edburke' timestamp='1324276461' post='467841']
First two are on the road at A7 in Eastie and A6 in Southie. You probably heard the [url="http://www.swps.com/whelen-howler.html?gclid=CL2opdjBja0CFUTc4Aodvz0FlQ"]"Howler"[/url], which is a low frequency generating attachment for the siren designed to be felt inside the more soundproof vehicles.
[/quote]
Looks like the same as a "Rumbler". We have one on one of our trucks. The thing never gets used.
First two are on the road at A7 in Eastie and A6 in Southie. You probably heard the [url="http://www.swps.com/whelen-howler.html?gclid=CL2opdjBja0CFUTc4Aodvz0FlQ"]"Howler"[/url], which is a low frequency generating attachment for the siren designed to be felt inside the more soundproof vehicles.
[/quote]
Looks like the same as a "Rumbler". We have one on one of our trucks. The thing never gets used.