1 fi sp4 12 in sixth order hairtrick

I don't show the box in this vid, but it's a quasi sixth order, rear port tuned to 29-30, front port tuned somewhere around 50-60 hz but this box will be replaced with a 4th order for 2 fi sp4 12s soon.

Видео 1 fi sp4 12 in sixth order hairtrick канала Zaanjo