Hello guys,
as the title suggests I want to control the volume on my 5.1 amp using a single potentiometer and a separate one for the subwoofer without mixing any of channels together does anyone knows how can I do that?
Thanks.
as the title suggests I want to control the volume on my 5.1 amp using a single potentiometer and a separate one for the subwoofer without mixing any of channels together does anyone knows how can I do that?
Thanks.
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Is this an amp that you are building or a commercial piece? You say "single potentiometer and a separate one for the subwoofer". So is that two potentiometers?😕
Voltage reference -> pot -> ADC on microcontroller -> I2C/SPI/TWI -> 3x PGA2320 is a good default. Not exactly a shortage of other options.
AD603 has a DC input for volume control - you can parallel as many channels as you need as the control input has high impedance. Only 48dB range though - is that enough?
A single potentiometer implies a single track.
If you want to adjust the volume of the 5 channels + bass in a 5.1 system you need 6 potentiometers or a 6 track potentiometer.
Or you go to a digital multichannel controller.
If you want to adjust the volume of the 5 channels + bass in a 5.1 system you need 6 potentiometers or a 6 track potentiometer.
Or you go to a digital multichannel controller.
Yes I actually want to use one for the sub and another one for the other speaker and it's an amp that I'm building to use after my last one broke.
Thanks for your reply,
Although what you're suggesting would work that would make very complicated for and I don't have that much experience and I don't know a thing about micro controllers 😱
Thanks for the reply,
I'll do some research about the AD603 and I hope that it's not too complicated to use.
Yes as a mattar of fact a 6 gang pot would work but it's too big to fit in a small controller because I want to use the amp with my pc and I don't think it's very practical.
Don't think you can get anything smaller or cheaper than this:
New Alps 6CH Remote Motor Volume Potentiometer Control Adjust 20K 6 | eBay
/U.
New Alps 6CH Remote Motor Volume Potentiometer Control Adjust 20K 6 | eBay
/U.
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How DIY did you want to go? I can't remember many details, about 40 years ago I saw a piece of equipment that just used PC mount potientiameters mounted on the main board with single retangular rod that went through the center/screwdriver hole such that they all turned in tandem.
They weren't stacked close together on the board. If you had to, you could fit 6 in the width of your thumb.
BTW: I hope you don't mind the low tech suggestion. I have never done it myself but it struck me as an ingenious way of doing. You can see the blue one in the upper right has the rectangular slot.
They weren't stacked close together on the board. If you had to, you could fit 6 in the width of your thumb.
BTW: I hope you don't mind the low tech suggestion. I have never done it myself but it struck me as an ingenious way of doing. You can see the blue one in the upper right has the rectangular slot.
The best way to do it is to build 5 x ladder potentiometers using 23 way switch wafers, these can then be stacked. They are then all perfectly matched and track perfectly.
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