Hey Guys,

 The issue that you are having right now is not related to your Onkyo 805 receivers. This issue is probably a blend of Audyssey EQ settings, manually adjusted settings and the input sensitivity of the Bravus subwoofer.

The Bravus sub's input sensitivity is fairly low. Meaning, it likes to see a good bit of voltage before it decides to turn on and if it doesn't keep seeing that voltage, it will turn off

 If it makes you feel better about all of this, I owned various Intimus subwoofers before getting a Bravus set up at my house. In the 3 years or so of using the Intimus subs, the setup was straightforward and relatively easy. I got my Bravus and, as I expected, I needed to make some adjustments. I did not, however, think that it would take some 3 weeks to really get things where I was happy with them. Now that I've got it all dialed in, I'm in heaven.

Here's an example of the change that was made. I own an Onkyo receiver as well. With my Intimus subs, 633-T/634-VAC/524SS combo, my receiver settings looked like this:

Front L: +7, Center: +8, Front R: +7, SR: +4, SR: +5 SUB: 0  (or -1 or -2 depending on what I was watching/listening to)

I added in the Bravus and began a whirlwind of re-calibrations. Here's where I have ended up:

Front L: -6, Center: -5, Front R: -6, SR: -9, SL: -8 SUB : 0  (or +1 or +2, depending on the material)

What's happened here is I've effectively reduced the output to all of the channels except the subwoofer. Bear in mind that these numbers represent a balance amongst the channel levels. The center channel needs to be a little bit louder relative to the front channels. The surrounds are closer so they don't need to be AS loud etc. etc.. However, all of these settings are slave to one thing: Your Volume Control.

By reducing all of the channel outputs (with the exception of the sub) I've effectively reduced the ratio of amplified output to line level output on the receiver. Now that I've done that, "60" isn't going to be a high enough volume setting for me. I'll now need to turn it up to about 70 or 73. When I do that though, I'm sending WAAAAY more signal to the sub and, guess what? It LOVES it. No popping in and out, no noise floor... just perfect.

Some may now be confused. You read all of this stuff about "reference level" and how your receivers' volume numbers are supposed to mean something relative to reference level. Umm... yeah... Have you actually heard what "reference level" sounds like in the average sized living room? It's painful. No one wants to listen at reference level unless they are in a reference room.

Now that I'm using in-walls and a smaller center channel (I know.. I know... that's another post) I've had to make some further adjustments because the in-walls aren't quite as sensitive as the 633-T were. I have to send them a little more signal do I bumped each of the affected channels by 3db, maintained my balance and everything sounds fantastic.

Now.. my hope here is not to troubleshoot subwoofer issues. There may be other factors at play but this is not the place to try to figure them out. That's what our phone number and live chat links are for. If you try my suggested adjustments and continue to have problems then please call us. We'll sort them out. We always do!