They're class D, designed and built by Axiom.

The amps were originally the same amp that is in the EP600 but the amps have now been reworked specifically for the 800; or so I have read on the forum.

The EP350, 500, and 600 amps have also been upgraded.

Thanks for that tid bit of information, I knew the 500 had undergone some changes with the trim setting being removed etc., but never thought about the changes as being upgrades.

I love my EP800s, too, but I agree with this sentiment.

Luckily for us the EP800 is only a few hundred more than the PB13 which makes that decision much harder. If I ever go to a dual sub system I will undoubtedly add an EP800 to go with my PB13.

Agreed. The total landed cost difference between the EP800 and PB13 will vary depending on where one lives.

That is the problem!! In some countries is better to have a dealer or distributor as the custom taxes will be lower and the customer will have a better price and local stock.

I was looking at SVS. They sell direct by internet, but in my country they have a distributor.

Nickba, both the EP series and the SVS's are very capable subs. You'll be happy either way. I just reread my previous post and wanted to clarify that that the SVS is an amazing sub too. These are subtle 'shades of gray' that I am trying to describe.

Thanks for your final comments Dan.

I am about to pull the trigger for a Axiom 11.2 Syste, including 2 EP-800 subs.

I didn't find any graphics for EP800...

I only found a test for the EP600 here:
http://www.hometheatershack.com/forums/subwoofer-tests-archived/973-axiom-ep-600-2nd-test.html

But seems that the Harmonic distortion is too high and compression too. I am wondering if these problems will happen on the EP800?