MTX JH 1200

[mike49504]

Anyone have info on this amp??

I need to know the value of the following resistors

R62

R63

[mike49504]

Ok i figured out the value of R62 that is a 61. ohm resistor..

Anyone know the value of R63 it connects to the 3rd leg of all the power supply fets..?

And the gate resistors are 100 ohms..

[Perry Babin]

If no one can answer your question, email MTX for the value.

[mike49504]

I tryed that already and they said they had nothing on the amp since its still in production

[Perry Babin]

Does the capacitor connect to a capacitor and the resistor/capacitor are connected across the source legs of each bank of FETs?

[mike49504]

yes

[Perry Babin]

Looking at other (older) MTX amps, it may have been a 10 ohm.

[mike49504]

The more i look at it the more im thinking its a 61.9 ohm resistor..

There are a total of 12 power supply fets ( 75339P)..

For 6 of them there are 2 61.9 ohm resistors that connect to the source leg.

1 6.19 for 3 of them and 1 61.9 for the other 3..

Then i go over to the other 6 there is only 1 61.9 ohm surface mount for 3 of them and for the other 3 it must be a leaded resistor (61.9 ohms)

Does this sound right to you??

[Perry Babin]

Are you referring to the resistor that I thought may be a 10 ohm resistor?

The gate resistors would not be in series with a capacitor and would not be connected to leg 3 of the FETs.

Post a photo of the area. I've never seen one of these so the circuit board designations aren't helping here.

If someone else has one of these, maybe they can help.

[mike49504]

Yes refering to the resistor you thought was 10 ohms..