Vitavox

Hi Wayne!
Congratulations and thank you for the forum!
(and also for measure conversion program).
I want to build a pair of cornerhorns for Vitavox speakers: I have a
pair of 15" AK-15/40, and also crossovers, S2 drivers and horns.
I want to use them in home-cinema system. The center way will be a
Vitavox/Klipschorn speaker (Ref CN191), I have one with same speakers.
What do you think about compatibility ?
I have some difficulties to calculate the measures of the Pi-horns.
Can you help me?
I know some (unverified) T/S parameters:
FS: 43.5HZ
Re: 9.57 Ohm
Qms:9.173
Qts:0.304
Sd: 8.04^2m^2
Cms:2.35^4
Vas:7.42 cub.ft(212L)
dB 1W/1M :99dB

Thanks

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