Is there a commercially available audio cable with a built..

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Shure makes one as well. It also has a transformer. Kind of wish they
made one without it.

http://www.bhphotovideo.com/bnh/controller/home?O=produ...

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"Ty Ford" wrote ...
> I've seen a lot of folks makeup cables to feed mono sources
> (mics) into mini TRS stereo inputs on camcorders. Hosa
> makes one, but it doesn't include the blocking cap that blocks
> the bias voltage some cameras put out.
>
> Anyone seen a premade cable with a XLR-F pin 2 that feeds
> both tip and ring of a 1/8" TRS that also has a blocking cap?

Markertek appears to sell one: Part# XLF-H8-10 $49.95
"TecNec Pro XLR Mic To 3.5mm Mini Cables for DV Cameras"

"TecNec's exclusive mic cable design with on-board electronics
allows prosumer camcorders to interface with professional
microphones. Blocking capacitors built into the cable eliminate
the 6-volt DC found on camcorder mic input jacks, eliminating
hum. Built with Neutrik XLR connectors and TecNec Mic-BC
shielded audio cable. 10 foot length."

They appear to be charging ~$40 extra to install a DC-blocking
capacitor in an otherwise conventional cable. But it must be
a REALLY GOOD capacitor! :-)

OTOH, my web page appears to be pretty popular for DIY...
http://www.rcrowley.com/CamAdapt.htm

Archived from groups: rec.audio.pro,rec.video.production,rec.arts.movies.production.sound (More info?)

marcoleavitt wrote ...
> Shure makes one as well. It also has a transformer.
> Kind of wish they made one without it.
>
> http://www.bhphotovideo.com/bnh/controller/home?O=produ...

That is just an A-95 transformer connected to a short
cable via the old-fashioned "coaxial-mic" connector.

You can buy a XLR to 3.5mm mini-phone cable in lots of
places. But most of them won't have the DC isolation from
the transformer (or from a series capacitor in the XLR barrel).

I'm not sure that particular transformer is really appropriate
for a Lo-Z to consumer camcorder application, anyway.
The unbalanced (output) side of that transformer is Hi-Z
(like 40-50Kohms) which is a poor match with the Lo-Z
input impedance of the average camcorder (likely 5K or
lower).

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http://www.trewaudio.com/catalog/items/item276.htm

but ask them to make it right angle
they have mono as well


--
Oleg Kaizerman (gebe) Hollyland

"Ty Ford" <tyreeford@comcast.net> wrote in message
news:5JOdna_ZfdLGF5neRVn-1A@comcast.com...
> Hi,
>
> I've seen a lot of folks makeup cables to feed mono sources (mics) into
> mini
> TRS stereo inputs on camcorders. Hosa makes one, but it doesn't include
> the
> blocking cap that blocks the bias voltage some cameras put out.
>
> Anyone seen a premade cable with a XLR-F pin 2 that feeds both tip and
> ring
> of a 1/8" TRS that also has a blocking cap?
>
> Regards,
>
> Ty Ford
>
>
>
> -- Ty Ford's equipment reviews, audio samples, rates and other
> audiocentric
> stuff are at www.tyford.com
>

Archived from groups: rec.audio.pro,rec.video.production,rec.arts.movies.production.sound (More info?)

On Thu, 18 Aug 2005 13:19:35 -0400, Richard Crowley wrote
(in article <de2fv8$105$1@news01.intel.com>):

> I'm not sure that particular transformer is really appropriate
> for a Lo-Z to consumer camcorder application, anyway.
> The unbalanced (output) side of that transformer is Hi-Z
> (like 40-50Kohms) which is a poor match with the Lo-Z
> input impedance of the average camcorder (likely 5K or
> lower).
>
>

That's also been my experience.

Ty Ford


-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com

Archived from groups: rec.audio.pro,rec.video.production,rec.arts.movies.production.sound (More info?)

I only point it out because it does indeed block DC voltage.