Speaker Switching

["Tony T" <tony@xxxxxxx>]

Hi all,

Thanks to advise from people on/off list, I intend to go ahead and try
and build a speaker switcher (not matrix).

It will have 6 x inputs going to 6 x outputs. 
With input1 going to output1 thru input6 to output6.
Ok, I don't need a switcher for this bit!

But there will be a 7th input, that can be switched to any or all of
the
6 output's.
This is the bit that needs switching.

The thing I hadnt realised, until it was pointed out, was that when a
source was switched out to allow the 7th input access to the speakers,
I
would need to switch in a load to the disconnected source. 

So I bought a manual switch from maplin's which has 2 inputs,
switchable
to 1 output.
And took it apart to see how it handled putting a load on the
disconnected source.

To my surprise the load resistor is always in place, which with my
(very) limited knowledge of electronics I immediately thought meant it
wouldn't even work. Of course it does.

So I assume that when a speaker is attached it becomes the path of
least
resistance?

Is this a safe/acceptable way to do this, or is it just a cheap way to
do this?

Many thanks
Tony T




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