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It is currently 19 Nov 2019, 16:53

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PostPosted: 15 Mar 2019, 19:33 
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Joined: 15 Mar 2019, 19:31
Posts: 1
Hey Guys and Girls,
I need a little help! I have A Focusrite Scarlett 2i4 USB interface that goes to a big volume knob (Nano patch) then out to my KRK rokit 5’s which I use for mixing and mastering.
This works fine for this but I also use it for gaming and listening to music and would love to add a Sub (I have a Sony sub that has cross over etc).
So what I’m looking for (I have no idea what it is called so have not been able to search for it) is DIY ( or commercial product if it has to be) project that will allow me to connect (RCA) and turn a sub on and off
• Looking for good audio quality
• Happy for it to replace the Nanopatch
Any ideas?


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PostPosted: 19 Mar 2019, 00:44 
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Joined: 23 Feb 2017, 02:02
Posts: 559
you cannot use rca to turn something on and off, it is only for audio signal transmission


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PostPosted: 20 Mar 2019, 07:20 
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Joined: 09 Oct 2012, 19:43
Posts: 338
Location: Vancouver Canada
If you are talking about turning the power on and off automatically when an audio signal is present then yes there are DIY versions
of these switches around. Some SUB's have this built in. Anyways, look for automatic stereo switches etc. The switch is a cct which
is in parallel to the signal watching it and if there is a signal present it energies a relay which in turn powers on the sub amp or whatever
is plugged in.
These methods of hands free control of power have gone by the way side as modern equipment such as sub bass amps etc now employ class D operation and use so little power when no music is present that the extra cct to do what you ask is not needed. Also I think
it is bad practice to have audio and 120vAC in the same box as a consumer item so they died out.
Have a look at this page
http://sound.whsites.net/project38.htm


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