Thanks for your replies.
I'm an unprofessional speaker diyer and I make my own on and off-axis measurements using ARTA and Vituix, ... wanted to compare my measurements to Klippel SPINorama measurements, ...
What would be the value of testing a one-off DIY design? Who besides of yourself would be interested ...
This is not against you,
@agnostic1er, the spinorama is decidedly set up to estimate the prospected market success. Not less, but for sure not more. People always misunderstand this in trying to interpret the spinorama as an objective quality certificate.
Once you set yourself free from this, you may want to tailor your DIY design to your own very needs, not to other peoples' preferences. I know how hard it is to have preferences that can be reproduced over the days ;-) You start to tweak here, then somewhere else and more sooner than later it never ends; it's a rabbit hole, it's DIY *gg*
a) Measure direct radiation, make it flat.
b) Measure off-axis response, estimating early reflections, make them 'good enough'
c) return to (a) until (a) and (b) converge
d) roughly adjust in-room response, 'steady state', diffuse to a softly falling slope
e) return to (a) until (a), (b), (d) converge
f) adjust bass independently
With an algorithm like that, and I cannot emphasize the term GOOD ENOUGH too much, you've got a speaker pair that will outperform each and every industrial offer.
Last step is to step back and just enjoy interesting fresh music, it is done at some time, good enough for whom it's for: yourself.
