I played around with WinISD, using the RLp15".
If I have done things correctly, it shows that I will have the following maximum SPL at 1m distance, 1000w, and a 80l enclosure (Sealed):
106dB @ 20hz, (6.30ms GD)
111dB @ 30hz, (5,62ms GD)
114dB @ 40hz, (4,54ms GD)
116dB @ 50hz, (3.55ms GD)
117dB @ 60hz, (2.60ms GD)
118dB @ 80hz, (1.65ms GD)
QTC = 0.58
I don't know if the max SPL numbers take in account for room gain or not?
I know the higher GD, the worse it is. But I don't really know how bad 6.3ms is in "reality" ?
I will be sitting 1-2m away from the subwoofer. I would cut it off at 60hz probably.. With some room gain, it could actually help increase the SPL down low (17-25hz), along with my AV15H P1152.. (If I manage to make them play together) ?
By adding some filters/calbrating it a bit (so that I don't have the 12dB difference from 20hz vs 80hz), this could be a decent subwoofer ?
Am I way off, or is there some sense in this?
The JBL 2226H I haven't played around with yet. But I would definately use it up to 160-200hz! And yes, I know that subwoofer would be more music oriented.