What was that smell?

Ugh, so last night i was putting in a new power cord, and i figured while im at it i was gonna try to see if i could get my DBX-CX3 pre-amp put between the Denon 2900 and the AMP, and have the digital out from the 2900 hit the reciever then go to the DBX-CX3 through the external proc input. Figured it might work as a Bypass.

Anyways, it diddnt work, i got some bad inputs on the pre-amp.

However, i stupidly enough forgot the number 1 rule of messing with this stuff to TURN IT ALL OFF.

I pulled out the interconnect going into the amplifier and all of the sudden the right speaker made this LOUD HEAVY DIGITAL NOISE. BRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
And it was LOUD!!!!!!!!!!!!

So, of course i freak out and reach around and start hitting power buttons left and right, finally got the amp off and the sound stopped.

Then i noticed this smell, kinda like the smell of a fresh bandaid.

Anyways, i connected everything back up, flipped off the A dn B speaker outputs on the amp and got everything ready to go, a nice quiet volume, and flipped the A/B switches back on (im biwiring)

Sounded just fine. No noticeable after affects except the living room smelled like a band-aid factory.

Any idea what it was? Ive smelt ckts that have fried before, it was not the smell of silicon...

think i might have damaged my voice coils? any way i can check?

Tell ya what tho, i did like the sound of that DBX pre-amp back in the system. I couldnt get the reciever to run through it, but it did sound good. Im really wanting to get a pre-pro now.... those Proceed's look better and better.