Originally Posted by
chrisb0 
GarrettL and KKfromLA, a couple of thoughts:
1. How many RCA inputs are on the back of your sub? If more than one type, which are you using?
the sub has multiple inputs, I am using a single LFE
2. Many subs have a L/R pair and a single RCA labeled as "LFE". It's the LFE connection you want on the sub, since the ".1" in "5.1" is a LFE (low frequency effects) channel.
i am using the lfe input on the sub...
3. You are using the "preout subwoofer" (#21 in manual) and not the "subwoofer" DVD 7.1 analog input (#19 in manual), right?
yes, using the preout subwoofer
4. If for some reason you did not have the sub connected and ran Audyssey, or you never had a sub connected and ran it (i.e. Garrett), then it's possible that the 605 has disabled the sub preout, which could be why you're not seeing the 1V output (just a wild guess). Have you manually checked the config before running Audyssey and see if the sub was enabled? If it's not, try enabling it first and then running Aud.
5. Also, make sure your sub input sensitivity knob is set at least half way, if not a bit more, before running Aud just to see if that helps.
i have it all the way up just to hear anything from it... but its still barely audible on the level calibration
6. Maybe the Aud microphone is malfunctioning and not sensing the sub?
7. From the manual p.45 "If the subwoofer (SW) appears on the SP Detect Result screen as “No,” increase the subwoofer’s volume to the half-way point, set it to its highest crossover frequency, and then try running the automatic speaker setup again. Note that if the volume is set too high and the sound distorts, it may not be detected, so use an appropriate volume level. If the subwoofer has a low-pass filter switch, set it to Off or Direct."
the sub has no switches, just a crossover, level, and phase
Hope one of these ideas helps.