Tone - Volume - Balance with Electronic Control by LM1036

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For simplicity, I’ve used the LM1036 tone/volume/balance chip to do this part of the mixer. The circuit is straight out of the LM1036 datasheet. In my mixer, I disabled the balance input by using a pair of fixed resistors to give it a DC voltage of VCC/2 Using the LM1036 may seem like laziness or a cop-out, but there’s a good reason for using it: it’s very difficult to get ganged pots, especially with a good match between channels. With the LM1036, you don’t need ganged pots. The disadvantage is a reduction in SNR, and having to use capacitor coupling in an otherwise straight-DC circuit. The capacitor coupling causes the loudspeakers to thump at switch-on. This is eliminated using the loudspeaker protection circuit.

Read More Source:
http://wiredworld.tripod.com/tronics/mixer.html
Thank you.

This entry was posted on Monday, February 11th, 2008 at 11:07 pm and is filed under Electronic Control, Tone control - Graphic Equaliser. You can follow any responses to this entry through the RSS 2.0 feed.