Creek 4040S3 Bias Voltage?

neiljadman · 13th March 2010, 12:39 AM

Does anyone know what the bias voltage should be on a 404 S3? I currently have it set at 5.0mV across one of the emitter resistors on each channel.

Many thanks in advance,

Neil

Mooly · 13th March 2010, 07:12 AM

What's the value of the emmiter resistors ? Make sure there is no load connected too.

Is it a BJT output or FET... and do you know the type of configuration, EF, CFP etc.

50 to 100 ma is a rough and ready current to aim for, in practice it won't make any subjective difference if it's off the mark.
A lot depends on the thermal compensation too... if it's not so good then it may well be impossible to set and hold a figure anyway.

13th March 2010, 12:39 AM	#1
neiljadman diyAudio Member Join Date: Jan 2007	Creek 4040S3 Bias Voltage? Does anyone know what the bias voltage should be on a 404 S3? I currently have it set at 5.0mV across one of the emitter resistors on each channel. Many thanks in advance, Neil

13th March 2010, 07:12 AM	#2
Mooly diyAudio Member Join Date: Sep 2007	What's the value of the emmiter resistors ? Make sure there is no load connected too. Is it a BJT output or FET... and do you know the type of configuration, EF, CFP etc. 50 to 100 ma is a rough and ready current to aim for, in practice it won't make any subjective difference if it's off the mark. A lot depends on the thermal compensation too... if it's not so good then it may well be impossible to set and hold a figure anyway. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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