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Re: Peavey KB 300
Yes a horn can get blown. This should be 2 pieces, the horn itself and a circular driver on the rear. The driver itself will have what is called a diaphragm that can be removed and replaced. That is the part you want. Open up the speaker and get the part number off of the back of the horn and order the diaphragm from Peavey.
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There is possibly a bad solder connection or component on the crossover. I cant remember if that crossover uses a 12volt light bulb or not, for DC current protection, if it does make sure the bulb is good.
sounds like an internal connection problem. open access panel and check the solder connection is not broken or loose. Be sure the metal mesh jacket is not touching the lead wire as that would cause a scratchy noise and feedback, or maybe near the internal cable causing feedback
High side speaker input jack defective, as they are switch also and if you plug the wire from the amp in full range and no hf sound but connecting directly to the bi-amp hi does, then your female 1/4 plug at crossover is defective for sure.
Peavey uses a protection network and sometimes it gets blown when too much power is sent to the speaker. The speaker may be blown however. Peak power for this is 800 Watts and 400 Program... That is NOT RMS power. Make sure your amp is no bigger than 300 Watts RMS driving this. If you are REAL lucky, maybe a lead has fallen off the speaker... Open the unit inspect and test the components.
The "in" and "out" jacks on the speaker are connected in parallel, so the fact that the other speaker works really doesn't tell us much. If you are not getting any sound at all from either the woofer or the horn, than the internal crossover is probably the defective part. The easiest way to hunt this down is to remove the rear plate that has the connectors on it and try each speaker directly,. Assuming that each speaker works, replace the crossover. Parts should be availabel from, Peavey directly. Call them and speak to the service parts department.
I've got Peavey SP2's and SP4XT's and they have one common problem. The 22XT Driver needs replacing from time to time. It could be a power spike, overdriving from amp, over heating or dirt/water in horn. The driver is very easy to replace and costs about $40.00. Remove the horn, carefully lift the horn and disconnect black and red wires. Remember red is always +. Remove driver from horn with socket wrench or socket screwdriver, clean the circular gap on horn with masking tape to remove dirt, hand tighten driver screws, connect red and black wires, carefully set horn back in SP2 enclosure and slowly bring up the power. Also be sure to be very careful when setting the new driver/ coil in the horn. You don't want to damage the coils on the new driver at all!
You have have been unfortunate enough to experience an uncommon failure. The bass driver has failed. It is a Black Widow that can have the basket/cone/voice coil assembly replaced as a complete unit. The magnet unbolts from the basket and you bolt on a new one. Classic field service designed product. You will be able to get a new basket from a Peavey equipment stockist. Just ask for a 15' Black Widow replacement basket They cost about $180 here in Australia and you can easily change it yourself. Good Luck and happy jamming.
A FixYa rating would be great for my tech tip to you. Cheers