Rockford R2-750x5

Any one know the value of R786?
 

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I change the resistor to 10 ohm and I replace the driver IC for the sub channel.Sub channel is playing good audio but I have nothing out of the other channels.I don’t see no drive going the the output ICs IRFI4122H.

I replace two bad 5v regulators but no change.It is using the same IRS2093M to drive the these channels.Any suggestions?