I'm still enjoying my new KP-100S. I have been getting very good responses from my music programs lately.

I just shipped off my JBL Eon10 G2. As I was putting everything away, I looked at the specs of the JBL. The frequency response is nearly identical: 65hz-17000khz for the Motion Sound and 70hz-18000khz for the JBL. So the JBL's bass response is similar to the Motion Sound - and possibly the smaller speaker size of the Motion Sound colored my first impressions of it.

The JBL is a lot lighter 23lbs. vs. 38lbs. and a lot more powerful: 200watts versus 100watts. Still, I no longer have the phase cancelling effect on the piano sound of my PSR2000.

Yesterday, I asked the residents and staff at a nursing home if they noticed any difference in my sound - I've been playing there for three years, and I've been using the JBL for the last 9 months. They all said they haven't noticed any difference. So any difference in the sound is probably very subtle.

Since it's a tax write off, and since I wouldn't mind a little more bass, I have ordered some replacement speakers for my KP-100S. The amp comes with Eminence Alphas, and I'm replacing these with an OEM Eminence 8" speaker that weighs about 2 1/2 lbs. more apiece, but has a frequency response of 40hz-5000khz. The Alphas are rated at 65hz-5000khz. I'll keep everyone posted if there is a noticeable difference. If not, I'm returning them.

This upgrade will make the amp weigh 43lbs. Heck, for 12lbs. more I could have the KP-200S. But 12lbs. might be the straw that broke this camels back. And besides, I don't think the KP-200S would fit in the trunk with the rest of my gear.

Beakybird

Interesting thoughts. Please let us know how the new speakers work out.

I received the oem Eminence speakers from Orange County Speaker repair. However, it is late at night. Baby and wife are sleeping. I'll have to try them out tomorrow.

The speakers were very easy to exchange. All I needed was a screw driver. The speaker wires are clipped with banana clips. As easy as pie. Well tomorrow will be the proof that I didn't cross any wires. Let's see, the black wires went on the left, or was that the right ... Just kidding.

The new speakers weigh about 3lbs. more than the Eminence Alphas. I'm interested in hearing if the frequency response of these oem speakers (40hz-5000khz) translates into better bass than the Eminence Alphas (65hz-5000khz).

I was struck that there is nothing in that cabinet but a lot of empty space. Is it like that with all amps? I wish they had created space to store cables.

I'll keep you posted.

Beakybird

Hi Larry (beakybird): Looking forward to your A/B test comparison test results between the stock KP-100S Emminence Alpha woofer & and the new OEM woofer which claims to improve the lower end bass response by 15hz.

As a KP100S owner myself, I'm more than anxious to hear the results of your findings. - Scott

I hope the amp is capable of producing the extra low end that the speaker can handle. It's possible that the new speakers will get the same frequency sent to them. I hope you get what you want.

Bass response with new speakers is superior. Bass sounds great with flat eq and with pumped up bass. It doesn't sound like a 15" subwoofer, but it's definitely deep enough to get people dancing. I'll be going to a job this morning where I can turn it up a lot more. I think this was a good investment. Incidentally, the difference in the low end specs is 25hz. That's a lot of audible bass.

Beakybird

[This message has been edited by Beakybird (edited 05-09-2003).]

Keep in mind that a 25-hz additon at the bottom end is a lot of expansion in bass. The difference in speakers, however, probably means you're moving a lot more air volume, which translates into a lot more gut-thumping bass as well. Good luck on the job today!

Gary

Hi Beakybird: GREAT news ! Curious to hear how EZ or (difficult ) it is to swap out the speakers and what special tools are required. Is this basically a plug & play deal, or does it require soldering skills as well?

I'm really anxious to hear how the KP-100S works out on your gig today. In addition to the deeper bottom end, does the added 25 hz (sorry for that arithmetic error earlier) add depth & warmth to the mid range as well?

Do the new woofers affect the overall maximum volume of the unit at all?

Also,does the additional 5 lb weight make a substantial difference in ease of transport in/out of your gig-mobile?

Currently I take out the small Tyros subwoofer box (TRS-MS01) for added bass, so hoping the KP-100S woofer replacement will fullfill what the TRS-MS01 provides.

Larry, looking forward to getting a more detailed report from you soon, as it looks like I may be following your lead on this.

Scott

Wouldn't a KP200s solve all this in the first place, instead of buying New Speakers for a "Brand New Amp"?

[This message has been edited by Dnj (edited 05-09-2003).]

Could the KP200s be used for small as well as larger gigs/jobs?
Starkeeper