MTX Thunder 81000 D

mike49504 · 21st November 2011, 11:05 PM

Does anyone know the value of the Gate resistors for the power supply fets??

Perry Babin · 21st November 2011, 11:11 PM

39.2 ohms

mike49504 · 21st November 2011, 11:18 PM

will 47 ohm resistors work ?? Or do i need something closer to the orginal value?

Perry Babin · 21st November 2011, 11:22 PM

It may work but if you have to use a sub, go a bit lower.

mike49504 · 21st November 2011, 11:32 PM

would a 34 ohm work better??

Perry Babin · 21st November 2011, 11:35 PM

I'd use that instead of the 47 ohm.

mike49504 · 21st November 2011, 11:54 PM

do you know the locations of the power suply drivers?

Perry Babin · 22nd November 2011, 12:02 AM

They are the PZTA56s near the small driver transformer.

This amp doesn't have the same type of drive circuit that you see in most amps.

mike49504 · 22nd November 2011, 12:04 AM

Will legs 1 and 3 apper to be shorted in this amp?

Perry Babin · 22nd November 2011, 12:08 AM

You're likely reading the 10 ohm resistor on the driver transistor.

21st November 2011, 11:05 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	MTX Thunder 81000 D Does anyone know the value of the Gate resistors for the power supply fets??

21st November 2011, 11:11 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	39.2 ohms __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

21st November 2011, 11:22 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It may work but if you have to use a sub, go a bit lower. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

21st November 2011, 11:35 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I'd use that instead of the 47 ohm. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

22nd November 2011, 12:02 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	They are the PZTA56s near the small driver transformer. This amp doesn't have the same type of drive circuit that you see in most amps. __________________ 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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21st November 2011, 11:18 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	will 47 ohm resistors work ?? Or do i need something closer to the orginal value?

21st November 2011, 11:32 PM	#5
mike49504 diyAudio Member Join Date: Sep 2006	would a 34 ohm work better??

21st November 2011, 11:54 PM	#7
mike49504 diyAudio Member Join Date: Sep 2006	do you know the locations of the power suply drivers?

22nd November 2011, 12:04 AM	#9
mike49504 diyAudio Member Join Date: Sep 2006	Will legs 1 and 3 apper to be shorted in this amp?

22nd November 2011, 12:08 AM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	You're likely reading the 10 ohm resistor on the driver transistor. __________________ 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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