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Author Topic: x10 device to control RCA/3.5mm audio jacks?  (Read 11585 times)

misha680

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Re: x10 device to control RCA/3.5mm audio jacks?
« Reply #15 on: September 27, 2009, 11:21:07 AM »

Hi guys - I am thinking of changing this so that I am actually wiring up:

3.5 mm cable

to

RCA cable.

However, the 3.5mm cable has L, R, and ground, whereas my RCA only has L & R. I have found that when I split my
3.5mm cable, I needed to actually have _three_ universal modules: L, R, and ground, to avoid buzzing.

What can I do with ground for RCA? Is there something I can hook it up to?

Thank you
Misha
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Brian H

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Re: x10 device to control RCA/3.5mm audio jacks?
« Reply #16 on: September 27, 2009, 11:28:16 AM »

An RCA connector has One signal to the Tip and the Shield is the shell of the connector.

  (  .  ) -Shield/Common
     ^
    Signal
You should not have to switch the shield as it should be common to all the signals.

More details on what you are connecting may assist us.
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misha680

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Re: x10 device to control RCA/3.5mm audio jacks?
« Reply #17 on: September 27, 2009, 11:38:41 AM »

Oh ok. Well I currently have:

3.5 mm cable

  L                  - UM506 -  L

  R                  - UM506 - R

  Ground        - UM506 - Ground

I would like to do

  L - UM506 - RCA L
  R - UM506 - RCA R
  Ground - ?

I found that, at least for the 3.5 mm cable, when I do _not_ connect grounds, I get buzzing on my speakers. I would like to avoid for
RCA. Its just a way to turn my music on and off (Creative Xmod to my stereo).

Thank you
Misha
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Brian H

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Re: x10 device to control RCA/3.5mm audio jacks?
« Reply #18 on: September 27, 2009, 11:44:01 AM »

What happens if you just connect all the grounds together?
Yes floating grounds will give you HUM
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misha680

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Re: x10 device to control RCA/3.5mm audio jacks?
« Reply #19 on: September 27, 2009, 12:10:14 PM »

No I mean if I'm _just_ connecting the 3.5mm to the RCA, then there's a ground on the 3.5mm as a separate wire but the ground on the RCA is the shielded connector.

I guess what you're suggesting is to connect the ground cable on the 3.5mm cable to the shielded connector on the RCA cable, is that correct?

Thank you
Misha
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Brian H

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Re: x10 device to control RCA/3.5mm audio jacks?
« Reply #20 on: September 27, 2009, 12:35:07 PM »

Yes connect the ground from all the cables together. Both RCA's and the one from the 3.5 mm
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