[lt5dude]

Mine usually seemed to be fairly hot too.  I opened it up and I can see where it burned.  There is a wire-wrapped donut shaped component in the same area of the amp as the power connectors.  Where the wires that wrap it connect to the circuit board they are blackened and the plasticy stuff around them is melted.
I don't know if this is evidence of running too hot or if I just got a bad one, but that's the damage I can see.
As I mentioned, I was listening at very low volume when it blew if that makes a difference.
BTW, Ty (of Tyler Acoustics) is sending me a new driver to replace the bad one.  Great service especially considering I bought the speakers used!  It really made me feel better about the situation.
I'll also add that I had run a pair of the amps bridged into 4 ohm speakers for awhile with no apparent problems, but I was running a single amp in stereo to 4ohm speakers at low volume when it blew.

[albee]

ogp:  When you said "active" speakers did you mean powered speakers?  If so, the rating of the Teac wouldn't be important.  If you mean two passvie speakers then the power rating is important.  

Actually, 30 watts is plenty with efficient speakers.  I would hazard to say 91db and up.  Others may want to jump in here.    

I was disappointed with the sonics of the 2150 due to the warmth in the midrange.  My speakers (RB-5's) are not warm sounding at all.  There have been a lot of reported problems with the tripath Blaus and remember that they were/are all on clearance.  Something wasn't worked out in the design when it hit the field.  And I don't think they've released a new digital line as yet.  My unit has not failed but my speakers are 8 ohm and about 92db efficient--not a tough load for a 100+ watts amplifier.

The Teacs are bulky and silver.  Our Teac prodigy, mgcsxr, even painted his Teac black--which I may attempt.  Do check his threads.

http://www.audiocircle.com/index.php?topic=11728

http://www.audiocircle.com/index.php?topic=12349

[ogp]

Yes, I meant powered.  My curiosity has been piqued with all the talk of using something like the Behringer DCX2496 and digital amps.  I've read that people are having great results with this paired with one of the Panasonic digital amps which are harder and harder to find.  I was thinking of trying it with these little Teac amps, which the price is definitely right on.  Or I might try the JVC RX-ES1sl which is also in the right price range.  Just kicking around ideas and wondering which would work better in this situation.

[mcgsxr]

Ahh, when you say powered, I think you might mean actively biamped - as in, each driver of each speaker, gets an amp to itself.  For this, a pair of the Teac's, along with the Behringer you mention, could do the trick, when paired with your front end and preamp.

I have a pair of these amps, and have played with passive biamping (1 amp channel per driver, BUT the drivers still have Xover in the signal path, unlike what you propose, with the ACTIVE Xover).  I did not notice a huge improvement when passively biamping, but I was warned by many that would be the case.  All of those folks warning me, were preaching what you are suggesting.

Certainly makes the speaker building simple enough, since all you need is a box and the drivers, no need to mess with Xovers...

Mark