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Re: Balanced / unbalanced connections



Hi there,

There's a rather comprehensive PDF document which offers different unbal 
<->
 bal interconnect possibilities, and how to wire the different cables 
accordingly.  

http://www.rane.com/pdf/note110.pdf

Dennis Leasさんが02.2.19 3:14 PMに書きました:
>> Are there any issues with using a TRS (balanced) cable
>> to connect an unbalanced out e.g. repeater, EDP
>> (<--token looper content) to a balanced in, say, a
>> patchbay?
>
>Usually this is not a problem; if you do not have noise issues.
>
>However, you have to be careful with how your connectors are wired.  If 
>you
>use TRS (i.e., stereo) phone plugs on each end wired one-to-one with the
>cable, you will probably have problems.  The unbalanced end, say an EDP
>(<--token looper content), probably will not place a signal on the ring.
>But the balanced end (whatever is connected to the patchbay) expects a
>signal on *both* the tip and ring.  Result, higher noise floor, greater
>crosstalk, etc.
>
>So the balanced cable itself is rarely a problem.  It's more how the
>connectors are wired.
>
>> How about using a TRS cable to connect an unbalanced
>> out to an unbalanced in?
>
>Even less of a problem.
>
>Some good info is at:
>http://homepages.enterprise.net/paul0blitz/techtip/art6.htm
>
>and in the "Yamaha Sound Reinforcement Handbook" (ISBN: 0881889008 ).
>
>Hope this helps.
>
>Dennis Leas
>-------------------
>dennis@mdbs.com
>

- - - - -
Yoshi Matsumoto
liminal@st.rim.or.jp