Mark, don't forget what I said about bass. I don't know how good you are as a keyboard player but I do a lot of piano and organ. Both of those can be bass heavy even if I'm not playing left hand bass. One night at the local jazz club I work at we were doing Revelation by the Yellowjackets. That has a strong rocking left hand gospel thing going on in the same octave as the bass. We had a decent crowd, maybe 40 or so and they were talking so we were not rock & roll loud but fairly strong and I blew out the woofer in one of my EV's. My 12" EV's are 225 watts each. That sounds like a lot but not when you're punching some left hand piano like I was. Organ is even worse. A big two handed organ smear will kill weak speakers. What I'm talking about here are called transients. Your average power output may be only 50-75 watts but a peak like that can jump to 300 or so in an instant and that's enough to blow stuff up. In amp speak that's called headroom so your rig has to have the headroom to handle a split second transient even if the overall volume is fairly low. If I'm playing left hand bass those EV's definitely won't cut it even at that fairly quiet jazz place. I have to bring in the 15" JBl's. And yes, a keyboard rig is the same as a PA, it has to be because a keyboard can put out a full freq range.

Biab created backing tracks are already compressed so those transients are smoothed out that's why John's small rig using Kustom 10's is ok because he's one guy using backing tracks but playing a keyboard live is a whole other thing. I would blow those 10's out in a heartbeat unless I'm just playing piano at an acoustic volume level. One strong hit on my keyboard and I'm in the stratosphere as far as power is concerned because it's not compressed processed sound, it's live. It's the same problem people have with recording live drums. Drums are usually compressed at the input because otherwise you have to turn the input gain way down to allow for the occasional super hot rim shot.

Bob

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