Howdy, Crow Folk - I was looking for as much info as I could find on E calls and especially aux. speakers and stumbled on a site called Predator Masters - well, it turns out that there is a big underground culture dedicated to burning down predators of all kind (kinda reminds me of Crow Busters but without the charm). Anyway, if you go to Predator Masters, then go to Forums then scroll down to electronic calls you will find a TON of info on callers, speakers, amps, etc. - type in whatever you are trying to find into the search feature. I'm sure that lots of you guys already know about this site but if you don't there really is a lot of stuff....also lots of other interesting topics. Hope this is helpful.....
Just got a Primos Alpha Dogg -- tried it out this weekend, but I have educated my crows like a Rook-ie so results were limited. Also, I am sure that I had the volume up too loud -- that thing cranks, so still have a lot of experimenting to do. A good sign though -- I brought a coyote into my spread in mid morning, just not quite close enough.