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Audio issue we can't solve (Not RadioDJ)

Offline DJ Garybaldy

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Audio issue we can't solve (Not RadioDJ)
« on: October 04, 2019, 02:07:50 PM »
Right I'm hoping some of you audio tech guys can help here.

We have 2 Computers connected to our sound system via cables both going into the back via a double connector.

Now here's the Issue: When 1 PC is on the audio is loud but as soon as the second computer boots it drops the volume by a good 50%

Does anyone know of a way to stop this happening we're using RCA connectors red/white plugs. We tried a pre-amp but that only made the music distorted.

Anyone have a suggestion of any hardware/cables etc that might help solve this issue. I told you it wasn't RDJ related but in some ways it is. Don't want to pump the volume up on the soundstage as that would only damage it.
Retired Radio DJ & Proud USER of RadioDJ since 2010

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Offline ricky

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Re: Audio issue we can't solve (Not RadioDJ)
« Reply #1 on: October 04, 2019, 05:26:00 PM »
hi gary it sounds like a earthing problem to me you can trye using ether a balun to feed through or a capacitor on the live tip also is ther a way you can feed with only one earth ie 4 tips 1 outer ?????
i use a matching transformer on the radio dater stuff i do hear that may help this sort of thing
https://www.ndblist.info/datamodes/interfacingv2.pdf

Re: Audio issue we can't solve (Not RadioDJ)
« Reply #2 on: October 05, 2019, 05:46:16 PM »
It looks more like an impedance problem.
example 100 Ω + 100 Ω in parallel, results in 50 Ω
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Offline FreerunMedia

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Re: Audio issue we can't solve (Not RadioDJ)
« Reply #3 on: October 10, 2019, 11:17:21 AM »
One way to do this right. Just use a mixer. Hooking up 2 audio sources to 1 input is asking for problems. Both outputs drop down in impendance and a lower volume is created. Also when the first one is playing audio at 100%, you send 1.5 volts into the output of the second computer. That is damiging the output on any play source.

Hook up a mixer, connect the 2 computers to 2 faders. Hook up the output of the mixer to whatever you need and you are safe. But don't waste any time on this unless you want to buy a new audio board or new PC every 2 months!

So not RadioDJ related.  :hihi:
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Offline DJ Garybaldy

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Re: Audio issue we can't solve (Not RadioDJ)
« Reply #4 on: October 10, 2019, 11:57:48 AM »
Just ordered an RCA switching unit. That should solve all our issues.


We don't have the right leads for the Mixer which has only ever been used once I bought it 5 years ago its been collecting dust in its box all this time.
 
« Last Edit: October 10, 2019, 03:14:42 PM by DJ Garybaldy »
Retired Radio DJ & Proud USER of RadioDJ since 2010

https://djgarybaldy.blogspot.com

How to Install RadioDJ: https://djgarybaldy.blogspot.com/2020/08/how-to-install-radiodj-free-radio.html

Think of RadioDJ as the SWISS Army Knife of radio playout software

NOT AVAILABLE ON WEEKENDS

Offline DJ Garybaldy

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Re: Audio issue we can't solve (Not RadioDJ)
« Reply #5 on: October 11, 2019, 04:18:44 PM »
Solved the switch unit arrived today which was rather quick.

Thanks for the help.
Retired Radio DJ & Proud USER of RadioDJ since 2010

https://djgarybaldy.blogspot.com

How to Install RadioDJ: https://djgarybaldy.blogspot.com/2020/08/how-to-install-radiodj-free-radio.html

Think of RadioDJ as the SWISS Army Knife of radio playout software

NOT AVAILABLE ON WEEKENDS