I was just checking out random amps, when I noticed that the audiobahn amps are stable from 1 to 4 ohms. Is this something they just introduced in the 05's? Isn't JL the only other amps that are like that?
Not really, it's been around for a while. The Audiobahn amps I've tested in the past, were all 1 ohm stable. This is why I recommended the ones that past the testing, to people with low budget.
Most mid and high end amps are 1 to 4 ohm stable. JL, and maybe one other brand (can't remember who) are the only amps that gives you the same RMS power no matter the config you are running.