Originally Posted by ddvette9
I'm sorry, but if my sub gain is half way and my audyssey trim level isn't bad, a sub shouldn't chuff THAT BAD even in a larger room. Room size to me would have to do with how loud and effective it sounds as a bigger room eats up the bass more. Not how much noise is coming out of the port.
I think at that part in the movie on my settings the pb1000 would chuff no matter where it was. Big or small room.
I could understand if my gain was 75% and on audyssey I was running a POSITIVE strike level AND dynamic eq was engaged, but not at my settings.....
It's either a setting I need to tinker around with or the sub has to regrettably go back and I have to start at ground zero again.
You are completely misunderstanding how subwoofers, gain, and AVR sub trim work. The fact that the sub gain is at 12:00, or your AVR time is in the negative, has absolutely nothing
to do with how hard you are pushing the sub.
Here's the thing, with sub gain at 12:00, your AVR set the sub trim at -9.5 to get the correct, calibrated level to match up the output with your speakers, your AVR, and your room based on your MLP. From here, you took a small driver, small cab, low powered entry level ported sub and adjusted the AVR trim +7.5 dB
from the calibrated level. What does this mean?
It requires a 100% increase in power to increase SPL from your sub by 3 dB
. A 6 dB increase requires four times as much power
from a single sub. It takes double the number of subs to get a 6 dB increase in output....double the power and double the excursion = + 6dB. Just based on your AVR trim adjustment of +7.5 dB from calibrated level, you are calling on your sub to increase power output by over 450%. Now, you are using dynamic eq which is asking your sub to again double its output. Overall, you are asking your small cab, small driver, lower power entry level HT sub to put out 12+ dB output from a normal calibrated level. Again, it takes four subs
under ideal conditions to add 12 dB of headroom versus a single sub.
The sub is not the issue...at all. Calling on a small inexpensive sub to put out over four times as much output is the issue.
Again, what # the gain dial points to is completely meaningless. The gain dial is simply a calibration knob to match your subs output with your system and room.