CA 3080/LM 3886 tube pwr amp emulation - diyAudio
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Old 10th December 2004, 12:19 PM   #1
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Default CA 3080/LM 3886 tube pwr amp emulation

Has anyone tried operational transconductance amplifier such as CA 3080 or LM 3080 driving audio power IC ( for example LM 3886 or alike). Do you (resident geniuses)have any suggestions how to use amplifier bias input of 3080 to reduce the gain and bias as a means for emulating tube amplifier sag/compression (power supply voltage sag,screen grid voltage sag).Could this be achieved? Im not so much after a hifi audio power stage as im thinking in the lines of electrical music instrument sound production audio power stage(certain behaviour and coloration). Maybe this question could be used as thinktank of how to approach that "tube like" behaviour using these two building blocks.Allso, How to add " soft clip" to the circuitry, add FB etc. Thank you for your time and my appologies(?).
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Old 14th December 2004, 10:37 AM   #2
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Continuation.... CA 3080 must "read" the load (8 ohm) to behave as descriped. Bias supply(s) connected to pin 5 of CA 3080. .....?LM 3886 saturation point is...?
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