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TOPIC: Using remote trigger with conventional 3.5mm jack

Using remote trigger with conventional 3.5mm jack 1 month 4 days ago #50370

  • asx77
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Guys,

If I was to fit the C-DSP 8x12 between a streamer and amp (both with conventional 3.5mm 12v trigger in/out) how could I get the C-DSP to auto turn on?

Option 1: 12v trigger out from streamer to C-DSP. Then trigger out from C-DSP to the amp. I think the amp expects to see a 12v signal, so if the C-DSP doesn't pass through the voltage from the streamer then this might not work. If it does then do I simply use 3.5mm jack at one end and bare wire at the other? Presume the only important wire here is the positive.

Option 2: Plug a Y-Splitter into the streamer's 3.5mm 12v out jack. Then send a 3.5mm to 3.5mm to the amp and another 3.5mm to bare wire to the C-DSP.

What are your thoughts?
Thanks
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Using remote trigger with conventional 3.5mm jack 1 month 3 days ago #50386

  • danthe0
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More info on products used ?
I don't think 3.5mm TRS jack is conventionally used for 12V trigger... Isn't it usually for unbalanced audio with Left (Tip), Right (Ring), Signal Ground (Sleeve) ? The other case I've seen was RS232C with Transmit (Tip), Receive (Ring), Signal Ground (Sleeve).

You could run the CDSP in always on mode by setting the slide switch in the left position, but it'll suck 10W constantly from the wall and it gets a tad warm.
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Using remote trigger with conventional 3.5mm jack 1 month 3 days ago #50387

  • asx77
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Hi,
It’s definitely a 3.5mm jack. Just a mono version although I’m told stereo would also work. It’s between a Primare NP30 and a Krell KAV 400xi. I want to slot the C-DSP between them if possible.

When I turn the Primare on, I want to trigger the CDSP then have it turn the Krell on.

Thanks
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Using remote trigger with conventional 3.5mm jack 1 month 2 days ago #50394

  • danthe0
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If the streamer and amp's REM trigger was already working, it should be fine to sandwich the CDSP in between them. Check voltages to be sure. The NP30 manual is too barebones and gives no hint.
Option 1 would be the way to go.
Just set the CDSP slide switch at Mid position/Position 2.
You probably might need to tie the REM IN and REM OUT grounds together.


Option 2 might introduce some pop if the amp turns on before the DSP fully turns on.
Last Edit: 1 month 2 days ago by danthe0.
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