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Reply With Quoteyeah that would probably help but the delay would have to be atleast 30 secs I would think
Would it help if I extend the delay before DLYON enables your amp?
MikeH
yeah that would probably help but the delay would have to be atleast 30 secs I would think
From the Carnetix manual. "You may choose to use the CNX-P1260 to turn on power to your auxiliary devices such as audio amplifier, head-unit, or electric antenna. In this way, these devices are powered only when the CNX-P1260 is ON and providing power to your CarPC."
You can use the carnetix to delay the power on of your amp to prevent that sound. See the manual here Manual
Well, I think Barometer has a different kind of problem. His sound card appears to be intialized by Windows many seconds (30+?) after the CarPC system receives its power. The DLYON signal is meant to deal with the speaker pop that is caused by applying power to your CarPC/sound card at the same time as your audio amp/head unit is powered. There is a 3 second delay on the DLYON line which will not overcome the problem Barometer is running in to. His speaker pop appears to be caused by a software initialization of his sound card. I'm not sure what a good solution would be for this.
Barometer.....can you get sound out of the sound card BEFORE you hear the pop? 30+ seconds seems like a VERY long initialzation time.
MikeH
ok here is what happens.....I flip the switch and the psu powers up and turns on my pc and my screen. Then few seconds later it then power up my amp...no problems here. Ok so now windows starts loading whether I go from fresh startup or resuming from hibernate. At this point my sound card is not initialized. Then right before my desktop shows up windows intializes my sound card and thats when I get the pop. And no the sound card is not powered up before windows starts so I can't get sound out of it.
if there was a led or something on your mp3+ that went on when initialized, you could hook it up to a relay that switches on your amp... (long shot, I know)
there is an led on the top of it...thats how I know its on..hooking it up to my amp would be another matter I suppose
well, does it light up when power is applied or when initialized by the OS?
(I have an MP3+ too, waiting to be built in the car, so I will be using the same technique, I guess)
You should tap into the power of the LED and add a small circuit and a relay that powers on the amp (which will have its own delay of some seconds?).
You should be able to find some schematics...
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