Hi I'm wondering if anyone can help me, I bought a TD 500 silent range inline fan, but I'm trying to eliminate the whooshing, the fan itself is quiet as I can't hear the motor. I have no bends in my ducting and it's stretched tight, I've put a muffler on both sides and wrapped the fan in a blacket then held tight with bubblewrap and duct tape, there is no vibration so using bungee cords don't help...I can't use a speed controller with this fan because it has two speeds built in, I have it on the lowest one. When I put my ear to the fan it's just the entry point and exit point that whoosh all the ducting going and coming off are quiet.
Any help would be appreciated.
Any help would be appreciated.