[MH79]

Is it possible to use a slider pot instead of a knob pot as an in line volume control?

I'm planning on using a 60mm 10k log slider - or would linear be better?

Also, I can only find sliders that have a power rating of 0.2W - is it me or is that really low? Would it be able to handle line level stuff ok?

 

[Pars]

Use log, and 0.2W is massive overkill for volume pot duty

 

[MH79]

Ok, gonna order a log one... Also, 10k should be ok shouldn't it?
Would I be able to get away with 0.1W then, the only sliders farnell sell are between 0.1W and 0.2W.

 

[MASantos]

more important than the power rating, is the accuracy of the pot. do you have a link for the pot you want to use?

 

[tangent]

The only reason you don't see people using sliders is that it's a lot easier to drill a round mounting hole than cut a long straight slot for a slider.

 

[amb]

Also, there are a number of excellent stereo log round pots to choose from (e.g., Alps, Noble, TKD, and others), but there aren't good stereo sliders available to the DIYer. Ergonomically, a slider is also inferior because it's easy to bump the knob and change the volume inadvertently.

 

[NelsonVandal]

No there's more reasons. They take up more space. They're easier unitentially moved, like in a pocket. The good ones are very expensive and the bad ones goes bad a lot sooner than a knob pot - oxidation with scratchy sound, and they usually collects dust. Be prepared to have electronic cleaner spray at hand

.

 

[D_Tinnitus]

I agree, sliders get nasty fast. Even professional recording consoles used to come with cleaning kits, as the rails would get static crackling problems.

How about an inline multi-stage attenuation switch? If you need more range, a small sealed pot is best.

 

[MH79]

Ok, a knob may be a better option then...

Here's the slider I was looking at...

http://www.farnell.com - part number 1191728

I need a stereo version of it tho.

I was going to use it as volume control for a balanced setup, that way I can have the channels at a matched volume by simply having the sliders side by side, in the same position.

I think I might try and get a 4 pole pot instead.

 

[n_maher]

Quote:

Originally Posted by MikeHunt79 /img/forum/go_quote.gif I was going to use it as volume control for a balanced setup, that way I can have the channels at a matched volume by simply having the sliders side by side, in the same position.

That'd be a big assumption on your part that the pots would track the same, i.e. same slider position = same amount of attenuation. In my opinion you're much better off going with a 4-gang pot.

 

[MH79]

Quote:

Originally Posted by n_maher /img/forum/go_quote.gif That'd be a big assumption on your part that the pots would track the same, i.e. same slider position = same amount of attenuation. In my opinion you're much better off going with a 4-gang pot.

Doh, I forgot about that!

I couldn't find any 4 gang pots at RS or Farnell... So I'm about to order this... I've found a 6 gang one, with a motor, which is a little overkill:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...tem=7571039924

Will this be ok? I tried to look up the part number, and I couldn't find any info this model, no datasheets or anything. I really need to know if it's log or lin.

Also, I assume I could just leave the motor unwired?

 

[n_maher]

D'oh! If you're going to shop at Ebay at least use the search function there...

This is a much better option.

 

[MH79]

Quote:

Originally Posted by n_maher /img/forum/go_quote.gif D'oh! If you're going to shop at Ebay at least use the search function there... This is a much better option.

Thanks, that one does look better (even if it is a little more pricey). I've ordered the 10k one.