This is my next mini siren. I decided to use rectangular ports this time, to see if it made a difference. The tone is much crisper and "sharper," and is much less like a whistle. This siren is roughly based off of the STH-10 siren, although clearly is different in scaling and number of horns. Anyway, I hope you all enjoy, it was a fun project, and please appreciate it for what it is. MATURE COMMENTS ONLY PLEASE.