Mapping a filter network

[Keryn O'Shea]

Good evening all,
I was given a pair of Yamaha R115s recently, although mouldy and weighed a ton, they sounded quite nice!
I'll be swapping all the drivers and hardware into a pair of S15PAs to lighten the load. One thing l noticed was the lack of LF considering they are a 15 inch woofer and wondered if the filter network was high passing the bottom end. Is there a way to calculate this and the
x-over point by the info we have here? Or is it just the woofer?
They'll be run with 4x S18Ps, so I'm not trying to push the S15PAs for LF, just curious..

[Bill Fitzmaurice]

You can use this: https://libinst.com/Xsim/XSimSetup.exe

[Keryn O'Shea]

Ok great, thank you.