Importance of phase and timing optimization when incorporating sub woofers ?
What's funny is I literally just did this last week. I used the OmniMic DVD test to align the subwoofer to the center channel. My audio processor's distance setting was too coarse, so I got it as close as I could, and watched the frequency response change with each change in sub delay. First a dip, then, slowly, the dip disappeared. Physics. Best, E |
+1 nekoaudio @snbeall - In an ideal world, you are right. I mean, DSP itself adds processing time, so even if you originally had subs at the same distance acoustically as your mains, just putting a processor in the bass path introduces 1-2 mSecs of delay (i’m guessing). In practice though, I find that matching the phase and slopes correctly using the sub alone can be really really good sounding. This keeps your mains "pure" and your sub disappears. |
Yes, it is very important. In this sense, phase adjustment = delay adjustment and is something you can easily do with a miniDSP unit. Highly recommended. As you point out, EQ is also important. As is room acoustics, and setting the crossover frequency and slope well. With no room acoustics, setting the proper delay for correct phase matching plus being able to trim off room modes is still highly desirable. https://www.minidsp.com/products/minidsp-in-a-box/minidsp-2x4-hd Best, E |
