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Mic or line level?

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Roberto Cerini
Mic or line level?
on Jun 24, 2009 at 1:36:56 am

I posted this question in the SONY area, but I now realize this may be a better area to ask.

I just ordered a SONY HDR-HC9. I can't figure out if I can connect a line level signal (from a preamp) into the mic minijack or not. The manual says it's a MIC (PLUG IN POWER) jack. I have some pres I'd like to use and connect to the camera, if possible.

Thanks,




Roberto Cerini
http://www.robertocerini.com


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Ty Ford
Re: Mic or line level?
on Jun 24, 2009 at 3:38:17 am

Hello Roberto,

I'm thinking mic level only. Maybe -10, but don't count on it.
Regards,

Ty Ford

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Roberto Cerini
Re: Mic or line level?
on Jun 24, 2009 at 11:42:37 am

Thanks Ty. I come from the audio world and am trying to get up to speed on the video world.

Being mic only (and I bet you're right on the -10), it sounds like my only other option if I want to use better mics (and condensers at that), is to use an external recorder and sync back in the NLE?

Or I guess I could get a phantom power box and connect it to the camera with an XLR to 3.5mm adapter (which I could easily build). The only disadvantage would that I would lose the balanced signal, but I don't think it's too big of an issue since the run would be very short.

The other thing I have to figure out is how to make a cable that connects 2 XLR's to a TRS mini plug (so I can separate left and right if needed). Are there any good sites with info on how to do this?

Is there any issues anyone could think with my idea?

Thanks,



Roberto Cerini
http://www.robertocerini.com


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Ty Ford
Re: Mic or line level?
on Jun 24, 2009 at 1:05:21 pm

Roberto,

Here's the cable:
http://www.trewaudio.com/store/product.php?productid=147&cat=21&page=1

Trew put a blocking capacitor in to keep the camera's DC power from getting into the mics. Some mics don't like that voltage, some tolerate it.

Running unbalanced does make the system more vulnerable to noise due to lack of shielding and because the circuit is single ended, you also lose 6 dB of signal.

Regards,

Ty Ford

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Roberto Cerini
Re: Mic or line level?
on Jun 24, 2009 at 1:44:18 pm

Awesome thanks. Just ordered one. A bit expensive, but I like the mic protection.
Next I will be ordering a dual Phantom power supply (I wish I could use the ones in my mixers and pres :-( )



Roberto Cerini
http://www.robertocerini.com


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Roberto Cerini
Re: Mic or line level?
on Jun 24, 2009 at 2:25:34 pm

A potentially dumb question... Once I split my mics to left and right channel, if I record one single mic it will obviously be recorded to either the LH or RH channel depending on where it is plugged in. If it;s a simple voice track (interview like), I will want the track to be centered and probably even mono. The only option I can think of is to import the final video into my NLE, export the audio track, import it into my DAW to render it to mono, export it and then bring it back into my NLE. Is that correct?

Thanks for all the help,

Roberto Cerini
http://www.robertocerini.com


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cowcowcowcowcow
Alan Lloyd
Re: Mic or line level?
on Jun 24, 2009 at 3:02:50 pm

"The only option I can think of is to import the final video into my NLE, export the audio track, import it into my DAW to render it to mono, export it and then bring it back into my NLE. Is that correct?"

You can double your single channel audio in most editing applications without going to an outboard audio application.


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Roberto Cerini
Re: Mic or line level?
on Jun 24, 2009 at 3:22:09 pm

Thanks Alan. I'm still learning Premiere Pro.

Roberto Cerini
http://www.robertocerini.com


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Ty Ford
Re: Mic or line level?
on Jun 24, 2009 at 3:57:44 pm

Robert,

No, import both discard the empty one and center pan the good one, or get the Trew cable that puts one mic on both channels.

Regards,

Ty Ford

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Roberto Cerini
Re: Mic or line level?
on Jun 25, 2009 at 12:48:44 pm

Yeah, that's what I was planning on doing in my DAW. I'll have to figure out how to do that in Premiere Pro.

Roberto Cerini
http://www.robertocerini.com


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Rob Neidig
Re: Mic or line level?
on Jun 27, 2009 at 7:22:45 pm

Roberto,

In Premiere Pro, click on the audio track, then in the Audio Effects choose "Fill Left" or "Fill Right" (depending on which channel your mono audio is in) and it will put the same audio in both channels.

Have fun!

Rob


Rob Neidig
R&R Media Productions
Eugene, Oregon


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Roberto Cerini
Re: Mic or line level?
on Jul 5, 2009 at 4:13:25 pm

I plugged in a mic to the HC9 using the mini to dual XLR adapter. One thing I noticed is hiss noise. Nothing I did got rid of it. I can't believe that the fact that the signal was unbalanced for such a short run would cause the noise. Especially cause the noise was there even when I unplugged the mic cable and only left the XLR adapter plugged in (which is a few inches long). Is it normal for these cameras to have that much noise?

Thanks,

Roberto Cerini
http://www.robertocerini.com


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Ty Ford
Re: Mic or line level?
on Jul 5, 2009 at 5:27:37 pm

1.Did you discard the other track?
2. What mic do you have plugged in?

Ty Ford



Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Roberto Cerini
Re: Mic or line level?
on Jul 6, 2009 at 12:29:26 pm

The noise is there regardless to whether the mic is plugged in or not. Even with just the XLR adapter, the noise is there. The mic was just an SM57. I'm going to be ordering a phantom power supply, but I'd like to find out why I'm getting the noise first, as that may change my plans.
No, I did not discard the other track (I assume you mean, if I recorded on the left channel, discard the right channel?)


Thanks,

Roberto Cerini
http://www.robertocerini.com


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Ty Ford
Re: Mic or line level?
on Jul 6, 2009 at 1:33:03 pm

call me

410.296.2868

Ty Ford

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Roberto Cerini
Re: Mic or line level?
on Jul 7, 2009 at 11:52:15 am

Will do. Sorry been very busy with work.

Roberto Cerini
http://www.robertocerini.com


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Emilio Alvarez
Re: Microphone or line level?
on Mar 5, 2010 at 7:53:54 am

Hi. I have the same problem as you with the HDR-HC9 camcorder. Recording through micro-making is rubbish: Lot of background noise, Voice distortion, Huge loss of quality. We have tried everything: With condenser mics, Without capacitor, Adaptions xlr to mini-jack, Etc, Etc.

We are adopting the solution is to use a digital recorder SWISSONIC mdr-2 and then edit the video with SonyVegas. This recorder is very inexpensive compared to other, But has the advantage that can connect 2 jacks for mic and has regulatory signal for each micro. This feature is not famous zoom h4.

Greetings


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