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Question about STH-10 and Model 5 sirens

Posted: Fri Mar 25, 2016 9:13 pm
by motorsgears
Are these two models essentially the same siren, other than the obvious visual differences (housing, projector cones, etc.)? I'm assuming the projector cones make the STH-10 louder than the Model 5, but are the tonal qualities of both models the same? I haven't heard either model in person but I can't tell much difference between them when listening to recordings. They seem to have the same pitch and timbre to me. What do you guys think?

Re: Question about STH-10 and Model 5 sirens

Posted: Sat Mar 26, 2016 4:07 am
by coastalsyrolover
They have the same number of ports (Last I checked) but the STH-10 (Again last I checked) has a bigger stator and chopper. (Which is surprising considering how big and heavy the model 5 is...)

Re: Question about STH-10 and Model 5 sirens

Posted: Tue Mar 29, 2016 6:07 am
by Trey
Another big difference would be the fact that the STH10s had 10/7.5hp motors and the Model 5 had 5/7.5hp motors. The horsepower depended upon the phase. The single phase units had higher horsepower.

Re: Question about STH-10 and Model 5 sirens

Posted: Tue Mar 29, 2016 7:46 am
by holler
STH has a 24 inch chopper, while the model 5 chopper is only 18 inches.