Passive Summing Box - To PCB or not to PCB

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Just pick up a few of either of these and you're done:

http://www.radioshack.com/product/index.jsp?productId=2102845
http://www.radioshack.com/product/index.jsp?productId=2103800
 
Hand wiring is more fun. If you are worried about the tedium of soldering the db connectors, I have a solution:

Go to your local computer supply store and scoop up a few Printer A/B boxes. Since everything's usb now, they go for cheap cheap, and you can often find them at Goodwill or pawn shops or at a Salvation Army store in their "computer section" for next to free.

Inside you get at least 2 of these:
db25.jpg


Then it's just a matter of following the standard tascam pinout.  To make nice rails strip off all the insulation of heavy copper AC conduit and straighten them by putting one end in a vice and the other end in the chuck of a drill; turn away and they get nice n straight!
 
Hi
Certainly one way but the wires tend to be the same colour, making phasing difficult to check visually but worse, thev wire is rubbish so frequently snaps and when it does as the wires are the same colour....... doh!!
Having said that, building a mixer into one of these boxes would be pretty neat, shielded and part wired. Add a couple of XLR plugs for output and you are there. PS ribbon from DAW to the mox box works well. Get IDC 25D connectors and 'stamp' them on, no tedious soldering. Line level balanced hardly needs shielding and if fine for sevetral metres as long as it is not wrapped up with mains cabling.
Matt S
 

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