SoundTech St15rx replacement speaker

[funnyfingers]

We have 2 SoundTech ST15RX mains that sound good. They even sound OK for some outdoor shows, though they were being pushed. I can't find any specs on the cabinet, but the 15" speaker may be a Monacor SP-380PA.

Anyone able to find any specs on the cabinet that might let me know how a Kappalite 3015 would work as a replacement? Any idea how that would react with the current high frequency speaker in it? If not so well, what matching eminence part would fit and work well? Not sure if this has a crossover inside.

 

[funnyfingers]

Any thoughts?

 

[ThisBass]

What's going wrong with your PA gear?
If there is no problem (you didn't mentioned any) why do you want swap drivers?
May be a PA forum is a better place to ask this question?

 

[funnyfingers]

It is just enough to handle what we need and we will probably do more outdoor shows. I thought also if this driver would work in this enclosure, it would be a good stepping stone to building something that could really make use of the kapplite 3015s.

Another possibility could be to add a sub and cut that range from the mains, but was hoping not to go that route. Was Hoping this might give a little more bottom end by itself.