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Control volume w/ 1 pot for 2x TDA7297 amp modules

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Oziam

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Hi all,

I have 2 separate TDA7297 amp modules complete w/ B50K pots for volume control & I want to control volume for both simultaneously with one(master) 50K 6 pin rotary pot. Can I do this simply by connecting the back 3 pins from the Master pot to the back 3 pins of both amp-module pots & same for front pins?
 
The amp modules are 2 channel so the existing pot is a 6 pin, I want to have 4 channels controlled by 1 pot
 
Don't know if it matters to you, but none of the Farnell and Digikey parts shown are both 50K and audio-taper.
50k is not needed, 10k or 20k will work fine since any audio sources can be loaded with it.
 
Yes I did notice that Wade, thanks, as audioguru commented 10 or 20 k would work. Digikey have 1,10,20 & 50K Pro Audio series but nothing in stock so I would have to back order.
I actually managed to make a custom hack by joining two 50K dual gang together as one, syncing them was a bit fiddly but they are very close within 7% which is good enough for my purpose. Thanks to all for your help, much appreciated :)
 
Don't know if it matters to you, but none of the Farnell and Digikey parts shown are both 50K and audio-taper.
A quasi audio-taper can be generated with a linear pot if a resistive load of about 15% of the pot resistance is added from the wiper to ground (for example a 15kΩ resistor for a 100kΩ pot).
It's not exact but it should work much better than a linear taper for volume control.
 
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