The gig went well this morning. I noticed more bass and this pleased me. As far as overall volume - it is the same, or maybe even less. I can't tell. I played in a wide room at a state nursing home. I had the volume up all the way on the amp, but the volume on the keyboard which feeds the amp volume was 3/5 to full volume. If you own the PSR2000, I had the volume at at 1:00 as if it were a clock. I was playing pretty loud for the room. Any louder and I might have had complaints. However, I was never astounded with the overall volume of the amp. I will have a better idea of any volume difference when I return to my weekly gig on Monday.

I didn't notice any difference with the midrange, just improved bass response.

It was super easy to replace the speakers. All you need is a screwdriver. The wires are held with banana clips. It's a no-brainer.

Given that the KP-100S manual mentions speaker replacement and merely specifies that if the speaker is replaced that it be with an 8 ohm speaker, I would think that the warranty still holds.

The new speakers weigh about 2 lbs more apiece. I don't notice the extra four pounds.

The KP-100S would not be suitable for large gigs no matter what the configuration because 100watts is 100watts. If you need more volume than that then you have hit an obstacle. With my business I only have one job on the horizon where I'm going to need to rent two 100 watt Yorkvilles for $18 at this place around the corner. Yes their rental rates are wonderful.

The KP-200S would not be suitable for me because it is so rare that I would need the extra volume. My amp as it is configured probably gets better bass than the KP-200S. The KP-200S is heavier and more bulky. If I did bigger gigs, then I might own both Motion Sound ampsor own a pair of powered monitors to compliment the KP-100S for the smaller gigs.

At 42lbs., the KP-100S is still pretty heavy. It's a lot more weight than my 23lb. JBL Eon, and the JBL pumped out more volume. But I think the Motion Sound sounds better, and it spreads the sound over a wider horizon. The people on the far sides of the room hear the music better than with a mono speaker.

Beakybird