I'm using the 578A with the 950 and just rewired my system for stereo subs.

Now I discovered that when you tell the 578A that you have no sub, it doesn't re-route LFE content to the front speakers (so that I could actually hear it), it just doesn't send it anywhere!

Would an ICBM, placed between the 578A and the 950, allow me to mix LFE from the 578A onto the left and right front speakers for the 950?

Cary