Dave A Posted April 21, 2017 Share Posted April 21, 2017 This week I bought a pair of KP-250-A and a pair of KP-250-R mains along with a pair KP-115-A subs and a pair of KP-480-SW subs. If there is someone who is around the middle Tennessee area who knows these I think there are some problems but I need guidance on how to diagnose whatever is wrong with them. They sound a bit muddy to me and the one KP-250 seems to have an intermittent cutout in the midrange horn. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 21, 2017 Share Posted April 21, 2017 The 115's are just plain muddy. You won't fix that. Open up the 250's, loosen, then retighten all the screws on the crossover. Make sure the wires are tight on the driver terminals as well. Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 21, 2017 Share Posted April 21, 2017 Where are you? I have family in Ashland City and will be going through there next week on the way to Hope. I bought 2 KP-480s for my church and they have been excellent with a pair of HIPs. Quote Link to comment Share on other sites More sharing options...
jjptkd Posted April 21, 2017 Share Posted April 21, 2017 Never had the 115's but had the 480's for awhile, thought they were great but they really need a high powered pro amp to drive them. I ended up with a Samson SX2400 at 550x2 and boy did those subs come to life. I tried a couple different lower powered home amps and they did not sound good, muddy is exactly how I described them before powering them properly. The 250's on top of the 480's powered properly is a nice sounding set up, the 250's really need the extra woofage to fill in the lower end mids and really give them a big sound. Congrats on a nice setup! Quote Link to comment Share on other sites More sharing options...
Dave A Posted April 22, 2017 Author Share Posted April 22, 2017 John, I am 67 miles due south of downtown Nashville. Depending on when you come through I may be gone next week. Will you be coming back this way on your way home? Send me an email please I would like to talk to you. CECAA850 I did what you suggested but the midrange still just does not sound right. It is kind of crackly if that makes any sense and since I have played with the connections a bit the cut out problem is gone. The other set sounds pretty darned good so I think there is an issue. jjpktd I also got a rack with some amplifiers and a fancy crossover. I have not really looked at them yet but they sure do weigh a ton and it took two of us to lift it up into the van. There must be some huge heat sinks in there. One of those when I have time endeavors will be to hook them all up and see what I have. All the gear is from the early 2000's. I hesitated to buy the rack full of stuff since I wanted the speakers only but for 250.00 I figured I would take a chance. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 22, 2017 Share Posted April 22, 2017 Time to swap mids between speakers and see if the problem is the driver or the crossover. Quote Link to comment Share on other sites More sharing options...
Dave A Posted May 5, 2017 Author Share Posted May 5, 2017 CECAA850 your suggestion of loosening and tightening has improved the problem considerably. I went in there and tightened all screws and wiggled connections and the muddy sound is almost gone. The mid range horn drivers were almost finger loose and I think the contact on the spade connectors from sitting idle for some time had a poor connection on top of it. John was kind enough to stop by and suggested replacing the caps in the crossover to which I will probably try. I like the sound but it is not quite there yet for my tastes. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted May 5, 2017 Share Posted May 5, 2017 Good deal. Quote Link to comment Share on other sites More sharing options...
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