Thanks for the info Gus, I am limited at the moment by budget and don't have the extra to go with the passive. It makes me think I should wait until I can though. Yeah if you can muster an extra $100 for those 2 passive radiators it will definitely be worth it. Now they only come mass loaded with 1050g so you going to have to add 550g to get them to 1600. This can be done by using some lead shot or metal rings which can be bought from home depot.