I'm interested in taking sort of a scientific approach for matching the KPA to my DXR10 and since it seems to be quite popular among Kemper users it might provide helpful to others, but before that happens I think I'm going to need some help from the audio experts around here.
I have set my old Behringer Ultra Curve (DSP 8000) to take a RTA curve of the Yamaha DXR10 using its internal pink noise generator and a Peavey PVR reference microphone.
The microphone is positioned as follows:
[Blocked Image: http://www.deny.mus.br/images/dxr10_pvr.jpg]
And the resulting RTA curve is as follows:
[Blocked Image: http://www.deny.mus.br/images/ultra_curve_dxr10.jpg]
Interesting, huh? From that pic I'd say the overall response of the DXR10 is fairly flat from 80Hz through 20kHz as we'd expect, except for:
1. A slight peak around 120Hz (2.5dB)
2. A slight dip around 2.2kHz (3dB) - this is where the presence control actuates and also where harshness lives I believe
3. A slight peak from 4kHz - 8kHz (2.5dB)
4. A much more pronounced peak around 12kHz (6dB)
Before I go any further I'd like to hear ideas, opinions on whether I'm doing this right. Mic positioning for instance, I know the PVR is omnidirectional but any ideas on improving its position are welcome. Next step I think will be connecting the pink generator -> KPA FX return -> EQ -> DXR10 -> Mic -> RTA. That way I can try to compensate the DXR10 for the flattest possible response.