Unfortunately, the fact that they used tube amps clouds the testing a bit.

I'd say a better test is to use solid state amps that are known to not add coloration or distortion into the mix...both issues that tube amps are known to do.

By choosing tube amps, they made it hard to distinguish between whether an attribute is from the speaker itself or being imparted by the amps.

Basically this test tells us what speakers are good for tube amps that few will ever be able to replicate, but for the rest of us, the meaning is a bit more muddled.

Nice to see the Outlaw speaker fare pretty well against the competition though. Be interesting to see what their measurements show.