When I tried using both my balanced (to amp) and unbalanced (to sub) on my EMM Labs DCC2, it created problems with overall transparency and dynamics - but this could just be specific to the DCC2.
I agree with the others that you will likely get better integration by using the speaker level inputs if available. The sub will take on the bass characteristics of your amp and blend more naturally with the mains, IMHO.
I agree with the others that you will likely get better integration by using the speaker level inputs if available. The sub will take on the bass characteristics of your amp and blend more naturally with the mains, IMHO.