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Re: Peavey KB 300 amp problems
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
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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.
i) I believe you can access the fuse by removing the Input Jack Panel.
ii) If fuse is OK, then unscrew the horn unit, take off one speaker wire & measure resistance. If it is open circuit then you can order a replacement horn diaphragm (if you feel confident to fit it to the horn).
Hi, problem can be solved. The problem can be from two places,
From the speaker and, also the cross over.
I might be from the speaker if the wire connected from the cross over inside the speaker has cut or has removed.,it can make the speaker (15),not to make any sound..
The cross over might also be the fault too. The cross over is located inside the speaker and it makes the 15 speaker makes sound.. 'There are capacitors on the crossover that control and makes the 15 speaker make sound.If the capacitor gets damaged it can make the sound stop. Also you will need to check the fuse inside the speaker, you will find the fuse on the cross over of the speaker.
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!
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.