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Old 26th February 2004, 12:45 AM   #1
Adam M. is offline Adam M.  United States
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Default Stereo volume control

How do you implement a stereo volume control with only one volume dial? I could not find any schematics or explinations I could make sense of.
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Adam
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Old 26th February 2004, 01:01 AM   #2
ronc is offline ronc  United States
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Dual pot.But most of the time you have to add a resistor to make them equal.
ron
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Old 26th February 2004, 01:09 AM   #3
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You could use a Maxim DS1802 Digital Pot. You can do a simple pushbutton (up / down) configuration that requires no special hardware.

Heres a link to their PDF about how to build one....quite easy looking.


Or you can use a single gang potentiometer to drive a digital pot. The circuit tracks the analog pot and sends a digital signal to the digital pot. Thus giving you the resolution and channel acuracy of a digital pot, with the feel of a analog pot. Heres the link
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Old 26th February 2004, 01:11 AM   #4
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As far as using a resistor on a dual pot, I'm assuming you mean adding a resistor to one pot to offset the difference? The only problem I see with that is that at minimum and maximum positions, they will be off by whatever the resistor is. But who spends time at min or max anyways!?

Unless you mean in parallel or something?
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Old 26th February 2004, 03:09 AM   #5
ronc is offline ronc  United States
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Yep, thats why i use 2 pots.I have yet to find a truly equal dual pot.
ron
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Old 26th February 2004, 03:19 AM   #6
ChemMan is offline ChemMan  United States
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How about a dual gang volume pot followed by a dual gang balance pot?
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Old 26th February 2004, 03:18 PM   #7
ronc is offline ronc  United States
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Or just 2 pots which is a combo volume/balance?
I find that as i sit in various positions positions in the room i have to adjust to different levels (channel volume postions) to get a balanced sound, but i am using narrow beam (8") FR pipes.So the sweet spot is a bit smaller than multi ways.
ron
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Old 26th February 2004, 03:21 PM   #8
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or use a PGA2310
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Old 26th February 2004, 03:57 PM   #9
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Quote:
Originally posted by Hybrid fourdoor
Or you can use a single gang potentiometer to drive a digital pot. The circuit tracks the analog pot and sends a digital signal to the digital pot. Thus giving you the resolution and channel acuracy of a digital pot, with the feel of a analog pot. Heres the link
Also very useful to produce multi-gang pots to go on the output of Behringer 2496 active crossovers!
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Old 27th February 2004, 01:54 AM   #10
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So can you use a digital pot with an active crossover circuit, that way you have very high resolution and consistant selections?

Using the pot as the resistor in the active crossover circuit? That would be cool, becuase then one knob could control an <infinite> amount of channels to all be at the same level.
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