Adding volume control to stereo

[Brent]

My mom has a late 80's sounddesign stereo that has two separate
sliders for L/R volume. It's hard to control so I want to add a knob,
and have it combined for the L/R channels. I need a pot right? How
do I know what size to use?

Will any of these work?
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=3

 

[Rheilly Phoull]

"Brent" <inverted@mail.com> wrote in message
news:ekfp00l5bs1pk0peeer2cn46d2fmj1bhjs@4ax.com...

My mom has a late 80's sounddesign stereo that has two separate
sliders for L/R volume. It's hard to control so I want to add a knob,
and have it combined for the L/R channels. I need a pot right? How
do I know what size to use?

Will any of these work?
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=3

I imagine you have no diagram so the best thing would be to see what values
are used on the existing controls.

--
Regards ........ Rheilly Phoull

 

[JeffM]

stereo that has two separate sliders for L/R volume.
I want to add a knob, and have it combined for the L/R channels.
Brent

see what values are used on the existing controls.
Rheilly Phoull

I think the OP needs to think about how Balance will then be handled.
An L-pad or T-pad sounds like it might be a better option.
http://groups.google.com/groups?q=L-pad+OR+T-pad+group:sci.electronics.*&num=100&hl=en&lr=lang_en&ie=UTF-8&group=sci.electronics.*&safe=off&sa=G&scoring=d

 

[Ross Mac]

"Brent" <inverted@mail.com> wrote in message
news:ekfp00l5bs1pk0peeer2cn46d2fmj1bhjs@4ax.com...

My mom has a late 80's sounddesign stereo that has two separate
sliders for L/R volume. It's hard to control so I want to add a knob,
and have it combined for the L/R channels. I need a pot right? How
do I know what size to use?

Will any of these work?
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=3

You could go a couple ways here. First you could post this one to
sci.electronics.repair and find someone with a schematic and pick your parts
from there. Or you could just measure the resistance with an ohmmeter and do
a best guess on the wattage. Then purchase a good quality pot with dual
wipers or a step attenuator would be nice too. Model numbers might help a
lot also. Does that help at all ??.......good luck, Ross

 

[Quack]

pull the wires of one channel's slider and attach 'em to the other -
wouldnt that then control both with the 1 ?
or if you want the l/r balance to stay usable - then even pulling them
both to a single pot wont help you.

Brent <inverted@mail.com> wrote in message news:<ekfp00l5bs1pk0peeer2cn46d2fmj1bhjs@4ax.com>...

My mom has a late 80's sounddesign stereo that has two separate
sliders for L/R volume. It's hard to control so I want to add a knob,
and have it combined for the L/R channels. I need a pot right? How
do I know what size to use?

Will any of these work?
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=3

 

[Michael A. Terrell]

Quack wrote:

pull the wires of one channel's slider and attach 'em to the other -
wouldnt that then control both with the 1 ?
or if you want the l/r balance to stay usable - then even pulling them
both to a single pot wont help you.

Brent <inverted@mail.com> wrote in message news:<ekfp00l5bs1pk0peeer2cn46d2fmj1bhjs@4ax.com>...
My mom has a late 80's sounddesign stereo that has two separate
sliders for L/R volume. It's hard to control so I want to add a knob,
and have it combined for the L/R channels. I need a pot right? How
do I know what size to use?

Will any of these work?
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=3

You use a dual pot with a single shaft. It has to be an audio taper,
or a "log" pot. The resistance of the old pots should be marked on the
body. 10K, 20 K 50K and 100K are common values for a volume control.

--
We now return you to our normally scheduled programming.

Michael A. Terrell
Central Florida

 

[Ross Mac]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:400EB837.F9E0CF44@earthlink.net...

Quack wrote:

pull the wires of one channel's slider and attach 'em to the other -
wouldnt that then control both with the 1 ?
or if you want the l/r balance to stay usable - then even pulling them
both to a single pot wont help you.

Brent <inverted@mail.com> wrote in message
news:<ekfp00l5bs1pk0peeer2cn46d2fmj1bhjs@4ax.com>...
My mom has a late 80's sounddesign stereo that has two separate
sliders for L/R volume. It's hard to control so I want to add a knob,
and have it combined for the L/R channels. I need a pot right? How
do I know what size to use?

Will any of these work?
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=3

You use a dual pot with a single shaft. It has to be an audio taper,
or a "log" pot. The resistance of the old pots should be marked on the
body. 10K, 20 K 50K and 100K are common values for a volume control.

--
We now return you to our normally scheduled programming.

Michael A. Terrell
Central Florida

Ah yes, the audio taper...forgot to add that!!