Hmm, ok there is no such thing as a factory reset on the 875 ... will try Audessey again ... now with the gain set very, very low so perhaps the Onkyo will increase its PRE-OUT sub signal...
From the Onkyo "speaker calibration menu" I manually set the sub to +12dB (the maximum) and that helps ... but I'm not really sure that to correct way to go forward...I have no scope to measure if the pre-out signal at +12dB is clean even at high levels like +0dB
Definately no plug & play in my case
