Ok, I go get the key for the cantina kitchen and take out the speaker to the left over the door ... I shoot it out. I go do the Dog quest, nice if a few steath boys would have been provided. Steath mag's too weird. I go to exit past the the two lavatories and I first get the faint speach then the beep. WTH I shot that guy out ... went back to my save and yep ... shoot out!! I took it out again with a grenade. But wait ... the dam speakers respawn ... they heal them selves .. No, No wait it was a zombie speaker. Bethesda deserves everything they will get for out sourcing the DLC to Obsidian. Is Obsidian now located in China??

I've never had a speaker respawn. Are you sure its not one of the permanent ones? Otherwise thats a weird sounding glitch you have their.

Sometimes there are more than radio/speakers that are in close proximity of each other and have overlapping range. Those are really annoying.

If you played through the residential area carefully enough and have explosives skill of at least 30, you should have a decent amount of frag grenades. I found them to be pretty handy at taking out hidden and hard to reach un-shieded radio speakers.

No it's that speaker over the door that leads to the lav's in the room where you find the key ... I shot it out ... but after doing the Dog quest it was reactivated. Go figure!