quote:

Originally posted by SgtFoo Probably the only mixers I've seen that actually come with these cute little things are Allen&Heath DJ mixers. They are these small little RCA male ended plugs with plastic ends for "closing off" an open RCA female terminal. I've no idea what one would call these things. Thus my searches on partsexpress.com are hopeless. I would like to acquire about 2 dozen of these, but without dropping too much cash if any, and without having to buy any Allen&Heath gear (as lovely as it is... it's just too pricey). If anyone has any... and wants to ship em to me in Canada, please post and/or PM. If I can find a pic of what they look like, I'll post it. ... here we go!... this pic has em on the mixer!!... --------right at the top you can see them closing off the un-used terminals!

i've been looking around for some caps... but all i found so far are the ones by cardas... ils sont tres, tres cher!

gonna have to look harder i guess...

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Can get them from maplins in the uk IIRC.
Ive never bothered with them.....although I should as all my cources are preamped before the mixer.

I know you can take any phono plug and modify them....

i just chuck em, they get in the way

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Are these plastic RCAs just to plug up the unused RCA female jack holes and keep dust out? If so, go get some cheap RCA plugs at Radio Shack or similar places.

They're usually shorting plugs... i.e. the outer ring's connected to the central pin, designed for grounding inputs (thus reducing noise etc), although a few mixers just come with plastic caps looking pretty similar (however this is quite rare).

DO NOT PUT SHORTING PLUGS ON UNUSED OUTPUTS OR YOU'LL DAMAGE YOUR MIXER, only use them on inputs!

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Stu Cox |

Have you tried Radio Shack (if you have one where you live)? Of you can search their website www.RadioShack.com They carry practically every cable, adapator, you'll ever need.

BTW, My Pioneer mixer came with them too.

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Take a look here Make Your Own



Looks easy enough.

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i'm confused. What exactly do these things do/ I mean, how do they prevent any noise from an open circuit? if nothing is connected to the input, it's like a switch being 'open' the globe will not work.

Tommy, maybe you can get your bro to explain if no-one else can.

what they do is shut down the pre amps on phono inputs - therefore reducing noise

quote:

Originally posted by skot_e i'm confused. What exactly do these things do/ I mean, how do they prevent any noise from an open circuit? if nothing is connected to the input, it's like a switch being 'open' the globe will not work. Tommy, maybe you can get your bro to explain if no-one else can.

You can get stray capacitance and can essentially get a small floating voltage across any open circuit, which causes noise. Tying this input pin to ground keeps the input voltage at ground and thus you eliminate the floating voltage & noise.

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Stu Cox |

Gotcha, cheers.