Boom & radio mic

4 replies [Last post]
Julian
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Joined: Aug 24 2000

This may be a silly question but how can I film stuf using a boom (shotgun) mic but also use a radio lapel mic. I know you can record on two chanels on the XL1 for example, but am I right in thinking you record at a lower quality?

Would you have the mic's going into a mixer and then in to the camera? If so does any one know of a good "field" mixer that dosn't cost £2-3000.

Im thinking about a "fly on the wall" documentery type thing where you'd have someone miked up but also need a boom to record other people, etc.

Any advice would be great.

Thanks

Julian

Alan Roberts at work
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Joined: May 6 1999

Keene electronics do a mic mixer for about £50. It's passive, no power supply, so no gain, only attenuation, but it might do. Alternatively you'll need some sort of powered mixer, and there are thousands around.

The problem with doing this with a low-end camcorder is that the agc circuit will look for the loudest channel (of the stereo pair) and lower the gains for both until the loudest is comfortably in range. If you don't do some form of pre-mix, then you'll almost certainly lose the other channel (it will be unacceptably low level). I know, I fell foul of exactly this. Even with the agc switched off any mismatch of more than 10dB will give you real problems in getting enough level for editing.

Plan to use a powered mixer, with meter and headphone monitoring. If you don't, you won't like the results.

Just my 2 pen'orth.

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Julian
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Joined: Aug 24 2000

Thanks Alan for the quick reply.

I think the mixer is the best idea but when i went to optex (?) to get some quotes on a whole buntch of equipment the only field mixed they had cost about £3000.

Do you know of a good bat powered mixer and where I can get it?

Thanks again.

Julian

Alan Roberts at work
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Joined: May 6 1999

Off the top of my head, no, but have a look at Keene's web site, because they do have quite a range of consumer stuff. Jessop's might be worth a look as well. It all depends on whether you can accept unbalanced circuits (consumer) or insist on balanced with XLR connectors (and that's why Optex stuff costs so much).

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alan@mugswellvillage.freeserve.co.uk. Delete village for a spam-free diet.

Julian
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Joined: Aug 24 2000

Yes I do want balanced stuff.

I'll check out the Keene site.

Thanks again.