KX 1200.1 burnt output inductor

nonprof · 9th July 2011, 11:08 PM

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!

nonprof · 11th July 2011, 02:35 AM

please help guys...i dont have schematics...thanks!

ComputerJLT · 11th July 2011, 02:52 AM

can you count the turns? do u have a pic of the inductor?

Perry Babin · 11th July 2011, 02:59 AM

Sometimes the cores get cooked and they magnetic parameters change. This makes them unusable. Have you tried contacting kicker for a replacement?

nonprof · 11th July 2011, 04:26 AM

Quote:

Originally Posted by Perry Babin

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.

MOER · 11th July 2011, 04:29 AM

60uH use a T130-2 core from Micrometals

nonprof · 11th July 2011, 04:36 AM

Quote:

Originally Posted by MOER

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.

nonprof · 11th July 2011, 05:01 AM

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?

Perry Babin · 11th July 2011, 04:23 PM

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)?

9th July 2011, 11:08 PM	#1
nonprof diyAudio Member Join Date: Jun 2011	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!

11th July 2011, 02:59 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Sometimes the cores get cooked and they magnetic parameters change. This makes them unusable. Have you tried contacting kicker for a replacement? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

11th July 2011, 04:29 AM	#6
MOER diyAudio Member Join Date: Aug 2003 Location: SIMI VALLEY CA	Kicker 60uH use a T130-2 core from Micrometals

11th July 2011, 04:23 PM	#9
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	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)? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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11th July 2011, 02:35 AM	#2
nonprof diyAudio Member Join Date: Jun 2011	please help guys...i dont have schematics...thanks!

11th July 2011, 02:52 AM	#3
ComputerJLT diyAudio Member Join Date: Nov 2010 Location: South Texas	can you count the turns? do u have a pic of the inductor?

11th July 2011, 05:01 AM	#8
nonprof diyAudio Member Join Date: Jun 2011	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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