Scientific Prototypes siren

Hello! I saw this video of an ambulance from New York City responding in 2007. It had an SP siren and I was wondering what model was it. Someone said it was a Mark 10 but it has a very fast Yelp, and I was wondering if anyone here knows about any SP sirens with a very fast Yelp, or if they own one. Thanks in advance. (I’ll link the video.)

 

tsquale

Lifetime VIP Donor
Oct 12, 2010
10,534
Minnesota, USA
Tone wise it does seem to match:


The problem with the SP sirens, is no two seemed to sound exactly the same. A simple search for them on Youtube will show you all of the various sounds and rates they were at.
 

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