i love your videos, but i have been wondering, what does the impeller of your siresn look like, because if they are longer and curved (like a water pump) it will produce more sound, and if you have an 8 port siren with 4 long straight vanes and 4 short straight vanes, it will give it a distinctive buzz/rasp to its tone
@@wojanteamfan-xk8wk na olx, wtedy w 2018 ta syrena kosztowała 800zl + dostawa na palecie czyli jeszcze jakieś 250zl. Teraz na olx tez pewnie są takie syreny ale nie wiem ile kosztują
