Scarlet fan motor interferes with analogue audio (font) inputs

[Martin Beek]

I'm experiencing the same issue as Martin, yesterday tested without and without Y cable, swapped all XLRs out, same result. We ended up using camera as scratch track since we were not able to get a clean feed and needed to roll.

My problem is, that we're in the middle of production. I am almost sure that the problem arrived with the phantom enabled firmware. We can't roll back for several reasons. Switching phantom on/off does not help. We have no alternative audio solution yet. Will try to think of one SOON.

M.

[Scott Crawley]

If you must feed both channels the same source for some reason, try a distribution box instead of a Y cable. Something like this may be what the Dr. ordered. http://www.sweetwater.com/store/detail/ProD2/ Most shops that sell electrical instruments will carry them.

[david_winters]

If you must feed both channels the same source for some reason, try a distribution box instead of a Y cable. Something like this may be what the Dr. ordered. http://www.sweetwater.com/store/detail/ProD2/ Most shops that sell electrical instruments will carry them.

Except the same issue exists when feeding one channel, without a Y cable.

[Scott Crawley]

Except the same issue exists when feeding one channel, without a Y cable.

Oh, OK.

[Alexander Thomson]

We had this problem when we first got our scarlet but the firmware seemed to fix it. Are you running the mics directly into the inputs or routing them through a mixer first? For some reason when the signal is coming in post mixer, there is no interference. Also, taking our camera off a surge protected outlet seemed to fix it as well.

Try booting the camera up without a lens attached, attach audio, then lens, and see if that works. Try removing and reinstalling the mount to remove any electrostatic buildup. Contact the 24/7 Support line, they'll probably have better advice than me.

[Martin Beek]

We had this problem when we first got our scarlet but the firmware seemed to fix it. Are you running the mics directly into the inputs or routing them through a mixer first? For some reason when the signal is coming in post mixer, there is no interference. Also, taking our camera off a surge protected outlet seemed to fix it as well.

Try booting the camera up without a lens attached, attach audio, then lens, and see if that works. Try removing and reinstalling the mount to remove any electrostatic buildup. Contact the 24/7 Support line, they'll probably have better advice than me.

Thanks Alexander, that sounds like an easy enough experiment. Sounds crazy, but you never know....


Martin.

[Christopher Mills]

try using a ground lift (2-3 prong adapter).. this will only help if your problem is a ground loop.
Otherwise if nothing else is helping you... cheapest solution will be a tascam DR -05 and a Rode condenser shotgun with a battery to record your primary audio.. use the headphone out to feed reference audio to your camera... this should cost about $400-$500.. and you will be able to sell the combo for $300 or a little more when you are done.

[ericyoung]

People having problems - are you sure your audio cables are wired correctly? Mini-jacks being used as balanced audio inputs are not an industry standard.

[david_winters]

People having problems - are you sure your audio cables are wired correctly? Mini-jacks being used as balanced audio inputs are not an industry standard.

Yes, using properly wired cables over here, for balanced audio, TRS over mini plugs.

I need to run a new test feeding from a mixer vs mic patched directly to camera and phantom powered by camera. I haven't run mixer audio to camera since most recent firmware update, only mic direct to camera.

[david_winters]

try using a ground lift (2-3 prong adapter).. this will only help if your problem is a ground loop.

On a previous shoot, lifting mackie mixer corrected a 60 cycle hum. However, in this case we are running battery power (dionics) and mic patched direct to camera, phantom power.