Originally Posted by mthomas47
I think you should separate the flashing light from the question of whether you are getting as much bass as you want. In my opinion it is very unlikely that your sub is hitting its limits at a trim setting of -10.5 and a MV of -15. It is possible that the limiter light is simply defective, for instance. If the sub isn't audibly distorting, I wouldn't pay much attention to the limiter light right now.
But, the truth is that it is impossible to diagnose the problem unless you are willing to engage in some experimentation. Most of us don't have unlimited opportunities to position our subs, and I agree that 2.5m should be plenty close. But, I might still try moving it a bit, while playing some bass heavy music and measuring with your SPL meter. Sometimes, even moving a sub by a few inches, or turning it 90 degrees can affect the response. You are just looking for some improvement in the bass SPL.
The second thing that I would do, wherever you end up with the sub, is to run Audyssey. That will almost certainly help, and can't possibly hurt, since your current situation is unsatisfactory. Once you have done that, it will be easier to help you troubleshoot the problem more specifically, but right now it's pure speculation as to what might be causing the issues.
Again, forget the limiter light for a moment. For all we know the light itself is malfunctioning. Microprocessors do, sometimes. All we know for sure is that your subwoofer volume is set very low--about 74db, and you aren't getting much bass, particularly tactile response. Well, you wouldn't be getting much bass with such a low sub setting. So, you need to calibrate your sub, using Audyssey, with a low trim setting such as -10.5 (but with Audyssey filters), and then you need to raise the AVR trim level until you do start to obtain some of the bass effects that you want. Until you actually try that, it's just about impossible to know what is really happening. And, that should be a perfectly safe procedure. The sub has a 5 year warranty and you aren't abusing it in ay way. This is all perfectly standard practice.
Hi Mike, thanks for the detailed response. When the limiter engaged I heard no distortion at all. I even felt some tactile feedback, not much, but some. Perhaps you're right and the light itself is not an indication of reaching performance limits. It may be faulty. Which sucks, but anyway.
Funnily enough, I bought the SR-6011 especially for Audyssey XT32 and (eventually) for the app that apparently I can use to shape the response curve to my liking. I'll do as you suggest and run Audyssey when I'm back at home.
I plan to take my sub to a friends house who has a dedicated cinema room and play things at proper levels to see what's what. In my apartment I'm a little apprehensive to test and retest certain bass scenes at very loud levels (-15 and higher) because of neighbors. The walls are also not very thick. I hate apartment living.
And I still have another one of these subs I'm getting to smooth the bass out. My plan for the two subs is that I'm planning on buying a house in the next 6-8 months, so the extra firepower certainly wouldn't hurt.
Also, I'm not the kind of guy that likes really bloated bass hence I prefer the bass flat with the mains. I know not everyone prefers that. I'm almost certain I have some bass peaks as well because in some scenes the bass sounds "thick", for lack of a better term.
I think the right path to take is to run Audyssey, but even better, to get a UMIK to measure my room because I have no idea what the actual response looks like. Thanks again for your advice and help in trouble shooting.