It looks like the Arx woofer driver material is doped paper. Anyway, I'm still debating between the A5 and A3. Considering I am primarily going to be using these speakers for HT, wouldn't the A3's make more sense? I believe most recommend an 80hz crossover for HT purposes, so would the additional drivers on the A5 would be needed? I will be putting this in a medium size room with my pb2000, so I just don't see the benefit of more output. I also don't need the added extension if my crossover is set to 80hz. I already ordered an A2 to test run with my current speaker system (B and W M1 satellites), so I guess I will just have to see how the A2 sounds when I get it. If it sounds great, then the A3's should be more than enough to round out my system and may actually match better with the a2 center due to the identical driver setup. Any thoughts on this?