I just received the JG1 speaker and I have to say it kicks some serious ass.
Even at low volumes the sound is incredibly crisp and clear.
In addition, dealing with those guys was a great experience, I highly recommend it to anyone considering getting one ofthem.
My son plays the drums, and in our basement we can jam without any feedback at reasonable levels.
It turns out the problem I was having was the order of my effects and a bad connecting wire.
Thanks to all who helped.