What Is This?

[stuart_goodenough]

http://www.crutchfield.com/App/Product/Ite...TR10&tp=111

how do you use this i dont understand at all

[lance_aka_64]

you use it as a port... its not a sub, you can tune it like a port by using weights that you attach to it. the weight increases the weight of the moving mass... but someone be sure to correct me if im wrong. i know i could of used better words but im lazy.

[Sampsonite]

Boston's GTR TunableRadiators are "passive radiators" — shallow, non-powered speakers designed to be used in conjunction with Boston G5 subwoofers. When mounted into a box along with a G5 sub, the radiator's cone moves with the air pressure created by the powered G5 sub, reinforcing bass output without requiring extra power.

Adding this GTR10 passive radiator to a sub box with a 10" G5 subwoofer can increase output by up to 3 dB — that's almost twice the volume.