The proper range is not +/- 3.5 dB, but +/- 12 dB for the satellites and -15/ +12 dB for the subwoofer on your Onkyo 717. That's a whole lotta difference.
Umm, ...actually the Onkyo 717 is another entry level receiver as regards the 2EQ version of Audyssey which does not EQ the frequency response of the subwoofer channel, only sets distances and speaker levels. In case your Onkyo turns out to be defective why not upgrade to a model that has at least MultEQ on board (with sub channel EQ'ing), as far as funds allow you this upgrade?
Not batpig, but it surely is the cable from AVR to Subwoofer.
Finally, as a last resort, did you try a microprocessor reset?
When I mentioned the "proper range," I should have said "ideal range" instead. I based that on the following:
"It is important that no trim level is 'hitting the stops' or maxed out. The reason for this is that if you do hit the stops, you have no way of knowing if Audyssey would have gone even further if it had been able to. So if, for example, your sub is set to -15dB, then there is the possibility that it could have been set to -17dB if Audyssey had allowed it. Ideally, your sub should be in the trim range of approximately -3.5dB to +3.5dB. If your sub is not in this range then you can adjust it by using the sub volume control knob and running Audyssey again until you get the trim where you want it."
I had read the highlighted words before I did the Audyssey calibration so I knew I should be shooting for that range. I tried, initially, with my sub gain set at 12 o'clock (which is the gain setting I used when I calibrated my Pioneer receiver using MCACC) and the result was a level of +12dB. I realized I was "hitting the stops" so I ran Audyssey again at about 3/4 gain and that too yielded a +12dB level. So, I went for broke and dialed the gain to max and finally the level was down to +3dB. That level would be fine if my gain was at 12 o'clock or less, but obviously something is wrong to have to turn the gain to max.
I wish I could upgrade to the 818, which has the famed MultiEQ XT32 Audyssey, but it's over $500 more (too much money for me at this time) and the height is almost an inch higher than the 717 and I don't have any "breathing room" on my glass stand (a stand that I absolutely love because it matches perfectly my Pioneer PRO-151 Kuro Elite).
What is a "microprocessor reset" and how do I do it?