Building a Jensen mic splitter

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antilog
george martin
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Building a Jensen mic splitter

Post by antilog » Sun Feb 01, 2009 11:28 am

I finally received parts to build a 2-way mic splitter using a Jensen JT-MB-C. Looking at their suggested application schematic, I'm curious about the RC network to ground. What function does this serve? Also, I am wondering if th 51R value is critical, or if a 47R or 56R would stay within signal quality spec.

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"Artists to my mind are the real architects of change, and not the political legislators who implement change after the fact." William S Burroughs
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mixedupsteve
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Post by mixedupsteve » Sun Feb 01, 2009 11:52 am

http://www.jensen-transformers.com/an/an005.pdf
See sec 1.4

I'm sure a 47r or 56r would be fine there.
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antilog
george martin
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Post by antilog » Sun Feb 01, 2009 12:14 pm

mixedupsteve wrote:http://www.jensen-transformers.com/an/an005.pdf
See sec 1.4

I'm sure a 47r or 56r would be fine there.
Thanks. I already scanned through that document, but missed that section = read the WHOLE f'n manual....

Awesome.
"Artists to my mind are the real architects of change, and not the political legislators who implement change after the fact." William S Burroughs
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Electricide
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Post by Electricide » Tue Oct 13, 2009 11:17 am

I came across 8 of these JT-MB-C transformers here at work. what I really need is a line to mic setup...RCA to mini (mono). I don't think these will work because they're 1:1.

Anybody want to trade? Or, perhaps buy the JT-MB-Cs?
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antilog
george martin
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Post by antilog » Tue Oct 13, 2009 11:31 am

PM sent.
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lassoharp
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Re: Building a Jensen mic splitter

Post by lassoharp » Wed Oct 14, 2009 7:55 pm

antilog wrote:I finally received parts to build a 2-way mic splitter using a Jensen JT-MB-C. Looking at their suggested application schematic, I'm curious about the RC network to ground. What function does this serve? Also, I am wondering if th 51R value is critical, or if a 47R or 56R would stay within signal quality spec.

Image
That's for dumping radio frequency noise to ground.

I don't know how critical 51 ohms is as I've always just used 51ohm for that app.

The network is useful to have whenever you're in a susceptible location for AM.
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