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How can I connect a frequency generator (BNC) to an amp (RCA) ?
How can I connect a frequency generator (BNC) to an amp (RCA) ?
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Old 20th November 2003, 07:56 PM   #1
Bricolo is offline Bricolo  France
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Default How can I connect a frequency generator (BNC) to an amp (RCA) ?

I want to test my gainclone, but there's a small problem:

the gainclone has RCA inputs, and the frequency generator has a BNC output, and uses coaxial cable.

For sure, I'll have to build (or buy) a BNC->RCA adapter. But what should I put in it?
Only 2 plugs, nothing more? Or terminate the coax line with a 50R resistor from live to ground?


Alex
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Old 20th November 2003, 08:28 PM   #2
jwb is offline jwb  United States
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It doesn't matter at audio frequencies. Just use the converter.
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Old 20th November 2003, 08:36 PM   #3
tiroth is offline tiroth  United States
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Many surplus shops sell such converters:

http://www.allelectronics.com/cgi-bi...RCA&type=store

I would not worry about termination; test your amp with the termination you expect to use in the real world. (i.e. 10k/20k etc, not 50 ohms!)
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Old 20th November 2003, 08:47 PM   #4
Pjotr is offline Pjotr
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Hi Bricolo,

From many hi-fi shops there are also 75 coax cables available with a RCA cinch at one side and a BNC at the other side. These are intended to connect (home) video equipment together. Such a cable serves me pretty well for the same purpose as you have.

Cheers
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