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[John Luty]

while doing my karaoke show last Saturday twice I had a short but loud buzzing sound that overtook the music for about 1 or 2 seconds . Is it possible the cable from my external hard drive is failing ? or is it something worse ? any help would be appreciated

[Bailey Lukens]

It seems to me it is most likely the cable you are using to connect the laptop to your output source. Have you tried new a new cable? It could also be the port going bad. Also, sometimes laptops and other things plugged into the circuit the laptop is on can cause weird ground loops and things.

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[Chris Grimshaw]

I'd expect ground loops to be present throughout. My bet is the 3.5mm jack connection is loose or failing.

John, I'd recommend using a USB interface for any audio coming out of a laptop. Headphone sockets are a last resort IMO. Something like the Behringer UCA202 will give you 2x phono outputs, and works with every machine I've plugged it into - generic drivers work fine.

Mid/high-end ones often require dedicated drivers (my MOTU M4 does), which is fine if you've got the drivers on your machine, but can be problematic if not.

Chris

[Bailey Lukens]

If a USB DI is not an option, I reccomend Whirlwind pcDI. If you're on a budget and you're okay with mono, the Rapco LTIBLOX is great too.

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[Bailey Lukens]

If a USB DI is not an option, I reccomend Whirlwind pcDI. If you're on a budget and you're okay with mono, the Rapco LTIBLOX is great too.

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You'll just have to get dual TS to 3.5mm adapter like the Hosa CMP-159 for use with the whirlwind.

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[Lee Douglas]

Quick check- with no music playing but laptop still connected, is there still low level noise present?  If you unplug it from the wall and run it on batteries, is it still present?

[John Luty]

Quick check- with no music playing but laptop still connected, is there still low level noise present?  If you unplug it from the wall and run it on batteries, is it still present?

no no noise and it only happened twice very briefly

[John Luty]

One more question I tried using usb from laptop to mixer, but I could only get sound out of one side. Is there a special cable? I just used a usb to usb b to go from laptop to mixer If it helps, I have an acer laptop going to a Mackie pro16fx and when I use a minpin to xlr everything is fine

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