KX 1200.1 burnt output inductor - diyAudio
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Old 9th July 2011, 11:08 PM   #1
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Default KX 1200.1 burnt output inductor

Hello Guys!

Could somebody help me to identify the value of the toroidal inductor at the output stage of this amp? It's burnt and having problem on recoiling, last time I did, found hissing on thjs amp...maybe I did mistake on recoiling.

Thanks in advance!
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Old 11th July 2011, 02:35 AM   #2
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please help guys...i dont have schematics...thanks!
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Old 11th July 2011, 02:52 AM   #3
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can you count the turns? do u have a pic of the inductor?
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Old 11th July 2011, 02:59 AM   #4
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Sometimes the cores get cooked and they magnetic parameters change. This makes them unusable. Have you tried contacting kicker for a replacement?
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Old 11th July 2011, 04:26 AM   #5
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Quote:
Originally Posted by Perry Babin View Post
Sometimes the cores get cooked and they magnetic parameters change. This makes them unusable. Have you tried contacting kicker for a replacement?
Yeah, I tried to get the inductor value but no answer yet, last time I asked for the replacement of another inductor from separate kicker amp, they said they can't provide the replacement. SO I guess they will not provide this output inductor.
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Old 11th July 2011, 04:29 AM   #6
MOER is offline MOER  United States
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Default Kicker

60uH use a T130-2 core from Micrometals
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Old 11th July 2011, 04:36 AM   #7
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Quote:
Originally Posted by MOER View Post
60uH use a T130-2 core from Micrometals
Thank you MOER and to everyone who replied!!! more power to DIY'ers...

I will try to recoil and do some calculation to get the number of turns with gauge 17 magnetic wire.
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Old 11th July 2011, 05:01 AM   #8
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oppsss...its not so easy I guessed. there are a lot of parameters to consider to get the number of turns!

In other way, I still have the burnt coil, I'll measure the length then re-coil the toroid with its length.
but I did this and I failed, it creates a whinning sound. Maybe the high frequency still coming out with these filters...must increase the length of wire then see if the inductance is equal to 60uh, reduce number of turns to get the correct value.

Any advice please?
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Old 11th July 2011, 04:23 PM   #9
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Although whining could possibly be caused by a defective inductor, the problem could be elsewhere. A defective inductor would tend to make the amp draw excessive current, could make the output transistors run hot or could make the output filter capacitors run hot.

If the inductor failed previously, it could have caused the output filter caps to fail. Have you confirmed that they're within tolerance?

Does the amp otherwise produce clean audio?

Is the whining absolutely constant in frequency or does the frequency change (like tuning an old short wave radio)?
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