Well, no it doesn't respond properly it is very boomy and nothing is really helping it. In saying that your comment has motivated me to keep trying. I need to keep playing with it. I will experiment a little more and see if its just the transients I am displeased with and perhaps with music not needing bass with no overhang I might be able to it get to respond better. Nothing is wrong per se, its just the limitation of the sub woofer. If I feel, I need you to have a look I will get in touch appreciate it.I am having trouble believing that this sub is uncorrectable.
A correction simply modifies the input signal. Some frequencies are amplified, some are attenuated and some are shifted in time. Music itself has a lot more of the same. Frequencies that come and go ad various strengths etc. So if your sub responds reasonably well to a music signal, it should respond reasonably well to a corrected signal.
Trdat, I can take a look at your measurement, regardless of whether I have done so in the past or not.
Don't hesitate to reach out if you don't get a good result. I really want this to work for you.
Hello Bernt,Don't hesitate to reach out if you don't get a good result. I really want this to work for you.
I am still learning to read the distortion graphs on REW and from what I understand on dbfs the low frequencies reach -80 which is nowhere near 20% right?I would suggest doing an REW measurement (8 repeats of 4m length) from 10 to 200Hz on your sub (no dsp). Aim for a volume that yields ~85db loudness. and then look at the distortion figures. If you have very high distortion (>20% say) throughout the spectrum, I doubt anything can be done. Also if you have a DAC that has a trim on the output make sure to adjust it down, so you don't exceed your sub's input sensitivity. For example my MOTU DAC puts out up to 7.5 V, whereas my sub's input shouldn't exceed 2.5 v.
It is hard to tell what's going on without doing a proper validation of your measurement and examining how you make the correction. What you describe sounds like something does not work as it should. First suspect is (as always) measurement flaws.Hello Bernt,
So I experimented with different corrections on this particular sub(that gets boomy)and one without true time domain correction and the sub woofer still gets very boomy. After heaps of experimentation the best performance of the sub is with no correction although there was times with huge roll offs that the sub did okay. Any ideas on what could be creating group delay if that is the problem at hand?
I have experimented with my better subs and whatever I throw at it, the bass is superb, clean and transient as possible.
Even if you have an idea of what I can try just to narrow it down before I send you the file to look at. If I can understand better what might be happening I am sure it will help you find what is going on. The general correction is awesome but the subs get boomy.
Maybe a target file that resemebles a closed off to see if it responds well?
i'll be honest, when using equalizer APO playing around with the frequency curve down low the sub responds well.