If these are only present on axis there is nothing you can do with eq as this would harm all other axis.
How would you EQ this one?
- notch up on the dip, notch down on the peak? (With overall tweeter attenuation)
- notch down on the peak, low shelf down from the dip? (Without overall tweeter attenuation
What you're seeing is an effect of the waveguide design. That's also why it looks different when you stick the microphone up against the tweeter dome.
Look at your off-axis response and imagine what would see if you bumped up the on-axis dip.
I would leave it alone for now. But it won't hurt anything to experiment and see if you can hear a difference.
Go get your better measurements. Then do the VCad thing, so you can weigh the trade offs between on and off axis repsonse before you make an actual decision.
Look at your off-axis response and imagine what would see if you bumped up the on-axis dip.
I would leave it alone for now. But it won't hurt anything to experiment and see if you can hear a difference.
Go get your better measurements. Then do the VCad thing, so you can weigh the trade offs between on and off axis repsonse before you make an actual decision.
This kind of irregularites we see with domes and waveguides, interference of cone/wg/horn cavity and perhaps also membrane/surround deformations. The worst scenario is a coaxial mid-tweeter, like in this case (modded SEAS MR18 in my project)
For audibility estimate measure response at least horizontally +/- 15 deg and make average. In your attached responses the effect is rather mild, but smoothing is too coarse, it hides the sharpest dip. Most likely there's no problem at all.
For audibility estimate measure response at least horizontally +/- 15 deg and make average. In your attached responses the effect is rather mild, but smoothing is too coarse, it hides the sharpest dip. Most likely there's no problem at all.
I agree. If you wanted to add a modest PEQ of about 2 dB at about 14k, you could probably flatten it out a bit, but this is low on the priority list.
Personally I dont like a lift in treble above 10K herz. It highly depends on recording whether a lift in treble disturb the experience. Or improve it.