alexclaber
Commercial User
Alex's calculator (his link) is good. If I recall correctly, I believe Alex said you should select the product category "loudspeaker single diaphragm" but I am sure he can correct me if I have indicated the wrong "loudspeaker" category. It comes out to just a hair under 5%, UK to US. A lot of people, myself included, get that import duty bill in the mail after delivery, from the carrier (i.e, Fedex etc.) Some have indicated they got it with the delivery.
Single diaphragm with the Super Compact or One10, multiple diaphragms with all the others.