This is a bumped thread but I'll post here for future reference. The Banshee 115 (
later re-named Super Banshee) used the same basic setup as Federal's 2T22. The primary differences are relegated to finer details. ACA's Super Banshee was 8-12 port, used a 25 HP Doerr motor, and discs were utilized to project the sound instead of cones.
Janesville, WI originally had a gasoline Mobil Directo mounted on city hall. This siren was withdrawn by 1960.
Around 1970, multiple two signal Soundmaster 115s were installed across the city. They also had an STL-10. All of these sirens are gone, replaced in 2004 by ASC T-128s. Ben Hinrich's Wisconsin Sirens website had many photos of the Soundmasters and T-128s but they are all gone unless someone saved them. I did see one of Janesville's Soundmasters way back in 1999 on a family trip to watch the Wisconsin & Southern circus train. I remember it resembled a UFO when viewed from below.
South of the city near the town of Afton is a leftover Soundmaster 115 from the Janesville batch. Unless it was recently removed, it should still be there.

- Soundmaster 115 near Afton, WI.
- AftonWI.png (522.87 KiB) Viewed 4321 times
As for the legitimate ACA Super Banshees, their profile varied considerately in the early years with the first few being nearly identical to the Soundmaster 115. The easiest way to tell them apart is the mounting platform.

- Flash card.
- Compare2signal.png (479.46 KiB) Viewed 4321 times
Super Banshee locations include:
Johnson Creek, WI
Tomah, WI (removed)
Neillsville, WI
Thiensville, WI (removed)
Cassville, WI