Well, the replacement amps that Lonnie sent out, with adjustments to the bias, did the same thing. However, he sent them out before some recent developments. I don't know if you've been following AV123, but Dan Laufman, Emotiva's president has stated the following:Don't worry guy's. We're looking into this and will advise in detail ASAP.
It is definitely not a lack of output capability; I have no concerns about this. My feeling is that the protect threshold had drifted on this production run for some reason.. . it's a subtle thing, as the modules test OK, but under the right dynamic conditions they are apparently inhibiting too easily. We'll get to the bottom of this right away.
Emotiva Audio Coporation
Also, there is another guy on my Axiom forum, Klipschman (yes he converted to Axiom
) , who recently purchased the Big Dogs, and is having the same problem with his m80's at about 105dB from 10ft away. With the DMC-1 at -20 his left amp shuts down, and -15 for his right amp to shut down. He talked to Dan personally, and Dan assured him that his top engineer is working on the problem, it will be corrected and we have nothing to worry about. He said that the MPS1 should make your ears bleed before shutting down, so there is a problem and we will be taken care of.
So far the only people I've heard with this problem lately are running 4ohm speakers like Ref 1's from AV123 or Axiom m80's.
Anyway, sounds like they will be working on a resolution very soon.