Sam Spoons wrote:Hope it helped, get back to us when you can.
No worries - I work remote so I can be a bit distracted during my day job :D
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Sam Spoons wrote:Hope it helped, get back to us when you can.
Sam Spoons wrote:Reading back over this a couple of things need clarifying.
You mention using the onboard sound card (Realtek) but also the Presonus via USB?
You mention taking the "mic out" from the Persons into the mic in on the onboard sound card?
a couple of questions :-
Is the computer a laptop or desktop or what?
What are your monitors?
blinddrew wrote:If you've got an intermittent fault, as it would appear, I'd start by checking the xlr cable, then check how well it's actually connected at each end. Sometimes the manufacturing tolerances can be a bit iffy on cheaper cables.
blinddrew wrote:If you've got an intermittent fault, as it would appear, I'd start by checking the xlr cable, then check how well it's actually connected at each end. Sometimes the manufacturing tolerances can be a bit iffy on cheaper cables.
ef37a wrote:blinddrew wrote:If you've got an intermittent fault, as it would appear, I'd start by checking the xlr cable, then check how well it's actually connected at each end. Sometimes the manufacturing tolerances can be a bit iffy on cheaper cables.
Yup, and I would run the same 'silent' test sans mic, phantom power on and tap the AI moderately hard with fingers on and around the top by the XLR. You might you see have a 'dry' solder joint in the earth circuit causing the HF AC from the 48V DC-DC converter to break through.
If no show repeat the exercise with mic connected but this time tap mic (this will of course cause alarming spikes in the signal but no harm. Can you also beg or borrow a dynamic mic? The Behringer XM8500 is only about £15 but is remarkably good and it is always handy to have a spare mic.
Dave.
Sam Spoons wrote:I'm a little confused, you refer to the 'microphone out' from the Presonus but it doesn't have one, do you mean the 'Phones" output? If so what kind of cable are you using?
Are you in the US? If so is your desktop computer earthed/grounded properly? The kind of noise you are experiencing sounds typical of an ungrounded system or possible a 'pin 1 problem'
When I mentioned monitors I meant monitor speakers, sorry, my bad I should have made that clear.
chanyam wrote:ef37a wrote:blinddrew wrote:If you've got an intermittent fault, as it would appear, I'd start by checking the xlr cable, then check how well it's actually connected at each end. Sometimes the manufacturing tolerances can be a bit iffy on cheaper cables.
Yup, and I would run the same 'silent' test sans mic, phantom power on and tap the AI moderately hard with fingers on and around the top by the XLR. You might you see have a 'dry' solder joint in the earth circuit causing the HF AC from the 48V DC-DC converter to break through.
If no show repeat the exercise with mic connected but this time tap mic (this will of course cause alarming spikes in the signal but no harm. Can you also beg or borrow a dynamic mic? The Behringer XM8500 is only about £15 but is remarkably good and it is always handy to have a spare mic.
Dave.
Holy hell! I did both silent tests again and the first test (no mic) didn't produce any sounds or change when tapping over the XLR port. The second (with mic) was a different story. When I first started the recording, the whine was there. As I tapped, it went away. It slowly started coming back so I started tapping again and this time it went away and stayed away - so I guess that's that. Crappy XLR cable. The LyxPro cable should be arriving today. Thanks everyone!!
James Perrett wrote:I'm still not totally convinced that the problem is the cable - it could well be inside the Presonus. Intermittent problems like this can be difficult to track down but at least you seem to be able to get it to come and go by tapping which confirms that it is a bad connection somewhere.