I own an Ibanez SW100 amp, It does pretty well in the Churches I play in but what I think I'm going to do is rather than getting the extention cab for it, Iwill get a better amp head to really get better sound from the 15 thats already in it. The speaker can handle 300 wats and with the present combo electronics it's only geting 100 and I think it can sound much better with a better head. Just my opinion thoug.