Originally Posted by indebtbassfreak
mthomas47 i have a question that may be difficult for you to answer. I'm finally a audyssey believer as when i first joined AVS and received my SB13 Ultra i went back to manual mode after not liking what it took away from my new subs performance
I'm still stubborn as after doing my sweeps and calibration i end up running all my channels hot so that i feel i dont need to go louder than -16 master volume. I'm guessing i should leave my outputs as audyssey set other than running the sub a bit hotter based on what i've read here and maxing out my master volume at 0.0?
My main question is,, today i watched (Don't Breath). Master volume was at -18 and sub channel was at -4 on my Integra. I dont know if it was the source material, but to me for the first time it sounded like my sub may have been bottoming out a little. It didn't seem really loud but just wondering if maybe there was some low content that may have been a bit much? Is -4 on the LFE and master volume at -18 too much?? Thanks.
If I understand what you are saying, after Audyssey sets all of your channels to play at the same volume at your MLP (based on a 75db test tone) you manually increase the trim levels on all of your channels rather than just using your master volume control. Is that correct?
Part of the problem with doing that is that it makes it impossible for someone else to know what volume you are actually listening to when you say that you are at -18MV, because we don't know how much you raised your trim levels. Another problem with doing it is that DEQ will boost the bass in all of your channels, including the sub channel, by 2db for every 5db you are below Reference (0.0). But, if you have raised all of your trim levels, that boost may not be necessary, and may in fact, contribute to your sub clipping sooner than expected.
If I were you, I would re-run Audyssey (or you could just hit restore to return to the original Audyssey settings). Then watch something while raising your MV gradually and see where you are. DEQ will fall away as you approach Reference (0.0). That way you will be able to relate how much bass boost you added to your sub with your AVR trim, and what your gain level on your sub is. And, you will be able to describe your actual master volume accurately.
If your sub is starting to clip, you may need to raise the gain level, even though you are currently at -4. Ed was clear in a recent post that even a trim level in negative numbers may not keep a sub from clipping, and that is particularly true as you go above -10 in master volume. If, after all of this, it turns out that you are exceeding your sub's inherent capacity, instead of just employing the settings in a slightly improper manner, then you will at least know where you stand. At that point, it may be time for an upgrade to a more powerful sub, or to a second sub. But, right now it is difficult to tell based on the information provided.
Try what I suggested, and then let us know what happens, starting with more appropriate settings, and then reporting on your MV, sub trim, etc.