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Old 30-07-2005, 3:39 PM   #1 (permalink)
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Advice required : diy a good simple phono switchbox

I need a good 2 into 1 phono switchbox to feed my headphone amp at work either my PC output or my CD player as I'm getting fed up with yanking cables.

I assume this is a piece of cake to build but I want to ensure I use the best possible components. ( hence my reasons for avoiding some 5quid plastic box)

Now I know very little about electrical components so could someone advise me on the best switch type to use ( it has to be passive so really can't be a relay) to ensure no nasty noise or ground problems?

Basically I need a shopping list : phono sockets and project cases are readily available from maplins/farnell but I really need some advice on the switch itself and any other issues that you think might be relevant.

I know beekeeper had a diy component switchbox that used a relay but like I said I want a nice simple passive switchbox that has minimal effect on the sound quality.

cheers
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Old 30-07-2005, 4:27 PM   #2 (permalink)
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Actually I just found this one on headwize.

http://headwize.com/projects/showfil...=cmoy7_prj.htm

Its ugly as sin , has headphone jacks instead of phonos and two outputs but I guess its a good place to start.
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Old 30-07-2005, 4:42 PM   #3 (permalink)
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Actually with the two outputs I could build in a crossfeed circuit and gain the ability to switch the crossfeed in and out of the circuit ...I think.
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Old 01-08-2005, 1:24 PM   #4 (permalink)
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These are the type of switches to use (get the gold plated version)

http://www.farnell.com/datasheets/32143.pdf
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Old 04-08-2005, 9:36 PM   #5 (permalink)
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Many thanks.
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