Originally Posted by RLBURNSIDE
Hi all, I was wondering if the forum might help on this. I will try to re-read the entire thread here to see if I can find any similar stories, but I figured I may as well ask first.
So, I have an XPA-3 and two Klipsch THX KL-650 speakers. One of them definitely has a blown woofer, perhaps both. My problem is, the amp shuts itself off (blinking yellow lights) and I'm curious why. Does it detect the speaker has a problem and shuts down to protect itself?
It sounds fine until it does (minus the slight distortion in the left speaker).
Now, when I run the amp with my two B&W dm602 (also, very, very blown, but easy to drive), the amp does not shut off. I just tried plugging in only the right Klipsch speaker in the center channel of the amp (I normally run a 2.1 setup), again, shutdown. Almost immediately.
Q) Is my amp blown? Or is it behaving as expected, and I should be looking to get both my speakers fixed? Do Emotiva amps prefer only one speaker type in all three channels? Like if I have two 8 ohm speakers in the left and right channels, and a 4 ohm one in the middle channel, is that bad? I thought the channels were completely independent. Is the amp itself borked? I don't want to have to send it back to Emotiva to get repaired.
I'd say that the Klipsch probably has some internal damage, possibly to its crossover circuitry or to the voice coil wiring, and this is causing a short circuit which forces your Emo into protection. That is what it should so.
OTOH, the B&W maybe just has a damaged driver cone and no internal damage to the speaker circuitry. So it sounds bad but has no reason to force the Emo into protection.
I'd guess you have at least one speaker that you have not blown up, so just connect the Emo to that and see if it works properly. My guess is that it will.
Next, I'd try to figure out what I am doing that is destroying my speakers, and stop doing it
It's perfectly OK to connect two 4 ohm speakers and one 8 om speaker (or two 8 ohms and one 4 ohm) etc to an XPA-3.