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Audio Sector Kits & PC boards from AudioSector

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Old 25th December 2014, 12:49 PM   #11
pmchoong is offline pmchoong  Malaysia
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Originally Posted by Peter Daniel View Post
So you are using one board per channel for unbalanced operation, just the input is XLR, right?

In that case positive input to the amp goes to pad marked IN+, ground to SG and IIRC the pad marked as IN- should be grounded too.

GND pad is for connecting ground reference from power supply board. Also, ground from PS goes directly to speaker negative connector.


Some additional; info can be found here: Group buy: Peter Daniels AJ-X pcb GroupBuy2 - diyAudio
Merry Christmas to you and thanks for the reply.

Yes, one board per channel using just the XLR input.

Please see the attached drawing. Is this what you mean by grounding the IN- as well?
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File Type: png AJ XLR.png (514.8 KB, 85 views)

Last edited by pmchoong; 25th December 2014 at 12:55 PM.
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Old 25th December 2014, 04:31 PM   #12
Peter Daniel is offline Peter Daniel  Canada
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Merry Christmas and yes, that's what I meant.
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Old 27th December 2014, 03:12 PM   #13
pmchoong is offline pmchoong  Malaysia
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I tried that but no sound is coming out of the amp. So I dissolder the connection and go back to the original setting.
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