ruffrecords

Cheap little summing box
« on: December 30, 2019, 06:16:45 PM »
In a recent email conversation I was told that old Data Tranfer Switches were available on eBay quite cheaply. So I looked and I found this one:



Not terribly interesting until you see the back:



when I immediately thought passive mixer. So I removed the guts, drilled a couple of holes at the front for XLRs and used one of my DB25 PCBs for the passive mixer itself. So right now I have this:







and plenty of room for up to 40 channels of inputs.

The best bit is the box cost me just £4.99 including shipping.

Cheers

ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'


Rob Flinn

Re: Cheap little summing box
« Reply #1 on: December 31, 2019, 05:46:55 AM »
I use these boxes to swap signals around between different recorders.    A steal at the price.
regards Rob

ruffrecords

Re: Cheap little summing box
« Reply #2 on: December 31, 2019, 03:41:35 PM »
I use these boxes to swap signals around between different recorders.    A steal at the price.

Mine had an incredible 25 pole 5 way switch. Wish I could think of a good audio use for that.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: Cheap little summing box
« Reply #3 on: January 01, 2020, 04:31:51 PM »
Could you use the 5way switch to form a coarse gain control by switching how the sections  in one of your dual bobbin  output transformers are wired ?     Or maybe turn it into into a Bridged T  attenuator of some description .

andow

Re: Cheap little summing box
« Reply #4 on: January 02, 2020, 05:28:41 AM »
I use these boxes to swap signals around between different recorders.    A steal at the price.

Very cool idea! How's the quality of these switches?

Rob Flinn

Re: Cheap little summing box
« Reply #5 on: January 02, 2020, 08:23:21 PM »
Very cool idea! How's the quality of these switches?
They're OK.  They have to not corrupt the data !
regards Rob

shabtek

Re: Cheap little summing box
« Reply #6 on: January 03, 2020, 12:46:03 PM »
I have repurposed one of those switches to allow various sencondary configurations on an old DI transformer
"really fine players do not use stomp boxes or master volume, they match the amp to the room and turn it up to 11.  Stevie Ray, BB King, Albert King, Duane Allman, Dicky Betts, Louis Armstrong"
   -CJ

Re: Cheap little summing box
« Reply #7 on: January 04, 2020, 05:48:42 PM »
What a cool project! Thanks for sharing.

If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik


 

Related Topics

  Subject / Started by Replies Last post
14 Replies
3617 Views
Last post January 16, 2006, 05:23:19 PM
by clintrubber
0 Replies
1092 Views
Last post August 24, 2006, 03:07:29 PM
by pucho812
13 Replies
2624 Views
Last post December 05, 2008, 03:44:32 AM
by ChrioN
10 Replies
5375 Views
Last post December 17, 2009, 12:40:14 PM
by skipwave