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Active Direct Box
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Author:  tom42107 [ 04 Sep 2018, 12:31 ]
Post subject:  Active Direct Box

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I built this active direct box but have a question. If the circuit is powered from the XLR phantom power, what attaches to the power LED+ rail? I just can't get it.

Author:  gofar99 [ 04 Sep 2018, 21:44 ]
Post subject:  Re: Active Direct Box

Hi. It appears to be a label so that you will connect the LED in the correct polarity as R13 is the LED and no polarity is shown on the board itself.

Good listening
Bruce

Author:  tom42107 [ 05 Sep 2018, 08:33 ]
Post subject:  Re: Active Direct Box

At first that was what I thought but that rail doesn't actually go anywhere. The red square to the left is a trace cut. The LED+ is the only thing on that trace.

Author:  tom42107 [ 05 Sep 2018, 15:47 ]
Post subject:  Re: Active Direct Box

Ok, so it does work and quite well. Not sure about the LED but I'm assuming it's an 'On" LED. Just not sure how to light it up in this circuit.

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