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Author Topic: FENDER MONTREUX  (Read 413 times)

jman

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FENDER MONTREUX
« on: August 15, 2019, 09:31:08 PM »
Any one know how to set the bias on this amp? schematics are found under Rivera era amps.

Jazz P Bass

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Re: FENDER MONTREUX
« Reply #1 on: August 16, 2019, 01:00:05 PM »
Before adjusting the 'bias' of the output section, I would suggest that you measure where it is set at the moment.

Measure the voltage (in MV's) across either R14 or R15 (the ballast resistors).

There is not a Fender specified bias level on the schematic.

Adjusting P2-B potentiometer will either increase or decrease the current draw of the output section at idle.

Being a Class A/B output I would go for the lowest setting that just gets it out of crossover (Class B) distortion.

« Last Edit: August 17, 2019, 10:48:27 PM by Jazz P Bass »

jman

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Re: FENDER MONTREUX
« Reply #2 on: August 17, 2019, 10:19:25 PM »
Thank you for that info on biasing.