[Anthony]

Well, you are halving the signal from the LFE at the start, so you may need to boost the LFE on the main source by 3 or 4 dB to compensate, that should help a little.

the only other thing I can think of is that maybe there's some sort of crossover or filter on the secondary receiver that chopping the signal, so it is very low, hence you needing the very high signal on the amp to get any output.

Make sure the speakers on the secondary receiver are set to large or turn off any crossover function and that should send full range to the auras.

Good luck.

 

[Anthony]

Check for things like "midnight mode" or "bass limiter" or other features that are designed to cut the bass off during late night sessions (presuming the owner has neighbors they don't want to annoy )

I had a customer give me a callback saying his sub was broken because there was no bass -- I went over there and he had inadvertently turned on the midnight mode (or whatever they call it) on his Onkyo receiver. The button was right next to something else and he accidentally hit it. 2 minute fix. I felt bad charging him $50 for the visit (just kidding, I did that follow-up for free)