Hello everyone,
I'm getting used to using REW with my UMIK-1, along with setting EQ curves for my 2 subwoofers using a MiniDSP 2x4HD. This is a pretty standard auto-EQ I did for my subs with a mini house curve. I didn't really do any individual tweaking yet (there are definitely a couple of places I was thinking of boosting/reducing a bit to make the response a little smoother). Before I did that though, I thought I would check the distortion, and I was surprised to see some rather high distortion around 30hz (up to about 7% THD). Am I reading this correct, and is this pretty bad distortion?
I'm a little surprised by this - I don't have the levels up in the AVR or anything and the gain on my subs is only around 10 o'clock (they're two HSU Research subs, a VTF-3 MK2 and a VTF-3 HO). The EQ did cut quite a bit out of the curve in some spots to try to flatten things out, but I don't think it boosted much yet from what I can tell. For what it's worth, I think one of the subs might have a rattle inside of it from old glue that I need to look into fixing, but I don't usually notice it. Besides that, both of them with individual measurements seem to have similar issues.
Please help me read these graphs to see if I have anything to be concerned about. I'm new to this stuff - was finally wrapping my head around reading the SPL graphs properly and understanding what curves should generally look at, but distortion is a whole new thing for me. These were generated with standard sweep measurements. I actually ran these just to see what the responses looked like and saved them a couple of days ago - it's only now that I'm looking at the distortion parts.
I uploaded screenshots of both the ALL SPL tab and the Distortion tab, but let me know if there's anything else that would be more helpful to see. Thank you for all of your help - I want to make sure this is looking OK distortion-wise before I start tweaking/boosting any portions of the response to flatten it out further.
Thank you!
I'm getting used to using REW with my UMIK-1, along with setting EQ curves for my 2 subwoofers using a MiniDSP 2x4HD. This is a pretty standard auto-EQ I did for my subs with a mini house curve. I didn't really do any individual tweaking yet (there are definitely a couple of places I was thinking of boosting/reducing a bit to make the response a little smoother). Before I did that though, I thought I would check the distortion, and I was surprised to see some rather high distortion around 30hz (up to about 7% THD). Am I reading this correct, and is this pretty bad distortion?
I'm a little surprised by this - I don't have the levels up in the AVR or anything and the gain on my subs is only around 10 o'clock (they're two HSU Research subs, a VTF-3 MK2 and a VTF-3 HO). The EQ did cut quite a bit out of the curve in some spots to try to flatten things out, but I don't think it boosted much yet from what I can tell. For what it's worth, I think one of the subs might have a rattle inside of it from old glue that I need to look into fixing, but I don't usually notice it. Besides that, both of them with individual measurements seem to have similar issues.
Please help me read these graphs to see if I have anything to be concerned about. I'm new to this stuff - was finally wrapping my head around reading the SPL graphs properly and understanding what curves should generally look at, but distortion is a whole new thing for me. These were generated with standard sweep measurements. I actually ran these just to see what the responses looked like and saved them a couple of days ago - it's only now that I'm looking at the distortion parts.
I uploaded screenshots of both the ALL SPL tab and the Distortion tab, but let me know if there's anything else that would be more helpful to see. Thank you for all of your help - I want to make sure this is looking OK distortion-wise before I start tweaking/boosting any portions of the response to flatten it out further.
Thank you!