As promised in my last thread, here are the specs on the RCF L15\554K.

Would this driver be beter for the Theater 4Pi, than the Eminence Kappa 15" lf?

Could you take a look at it, if the driver is good enough, would you give me the specs on the best filter and compressiondriver to go with it?

L15/554K

Impendance: 8 Ohms
Freq. response: 35-2500Hz
Power handling 100 hour EC nose: 500Watts
Power handling AES standard: 600Watts
Sensitivity (1w/1m): 99 dB
Voice coil diameter: 100mm
Resonance frequency: 35Hz
Total efficiency factor QTS: 0,24
QMS: 8,6
QES: 0,24
Vas: 0,227 m3
Re: 6,6
Sd: 0,085 m2
xMAX: +/- 4MM
11,3KG/PIECE

Thanks,Erik.