Randy, nothing useful to say about the difference in the distance measurements that you describe now. As to the loss of volume with the 600 connected, the only technical reason that appears is the possibility that even the modified amp(if you actually have it)has an extremely low input impedance and the voltage divider effect which I mentioned in the other thread is causing a loss of preamp voltage output. For that to happen, though, the input impedance would have to be on the order of a few hundred ohms rather than the 10K or more ohms typical for an amplifier, and we don't know if this may be the situation unless Axiom would give the input impedance spec.
