I just got off the phone with Tony, spoke to him about possibly switching from 18" CF to 12" CF to add a bit more outside noise whilst minimising inside drone.
Won't go into too much detail unless someone's interested (PM me) but I'm sticking with the 18" CF system and will look at resonated HFCs later down the track if its not loud enough for my liking.
Highly recommend giving him a call if you've got any queries... His expertise and advice is excellent and I can now head to bed with my mind at ease
