questions about making a line mixer..??.

[rosssurf]

My sound man would like me to make him a mixer that will accept 4 1/4" inputs and bring them to 1 1/4" output. They do not need to have any level control but it might be nice to have.
He vaguely remembers making one years ago by just adding resistors in line with the four inputs. Can anyone tell me how to achieve this goal ? what values should I use? would adding level pots for each input be difficult?
Thanks in advance

[R.G.]

These are all from the first page that comes up when you put the terms "simple mixer" into google.

http://www.tkk.fi/Misc/Electronics/circuits/linemixer.html

http://www.generalguitargadgets.com/index.php?option=content&task=view&id=95&Itemid=123

http://www.harpamps.com/schematics/smixer.pdf#search=%22simple%20mixer%22

( the one I drew from the first days of the web)

http://www.muzique.com/schem/mixer.gif

I didn't go to succeeding pages.

[fixr1984]

Found this in the layouts gallery.
Is this what you are looking for?

http://aronnelson.com/gallery/album18/SOUNDCARD_4_CHANNEL_PREAMP_VERO_CORRECT



Opps got beat to the reply

[choklitlove]

i think this is exactly what he was talking about: http://geocities.com/worthekik/mixer.html

it's passive and a very quick build.  it probably doesn't perform nearly as well as the others, but maybe it will suit your (his) needs.

[rosssurf]

Thats sll the info I need. Thanks guys for the responses. I was busy for a while and forgot to check on this thread.