sahib
Well-known member
I had designed an 8x8 matrix cross point switch. In the original design I used 4051. We tested it in a friend's mastering studio against his expensive module and could not hear a difference.
A friend (from Norway) wanted to build a relay based version. So, I designed a relay based mux card and he is now using it.
Below image shows the original design with 4051 based mux cards. There are 8 rotary switches that represents the output channels. Using these switches any of the input channel is routed to any of the output channel. Obviously you have to avoid summing. I did not include it due to cost. Illuminated push button switches are for enable/disable. Normally red and channel disabled. When pressed it turns green and channel enabled.
I am now looking into an expandable version. I am also brain storming for a digitally controlled version. Another good friend (from Montenegro) gave me some AD8113 chips to play with.
If there is interest I can put a kit together. However, I will probably design a new motherboard and incorporate in/out connectors to eliminate the hard wiring.
![1724162201562.jpeg 1724162201562.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/87/87055-74510a2e1daa01fdf96ae554be888a0b.jpg)
A friend (from Norway) wanted to build a relay based version. So, I designed a relay based mux card and he is now using it.
Below image shows the original design with 4051 based mux cards. There are 8 rotary switches that represents the output channels. Using these switches any of the input channel is routed to any of the output channel. Obviously you have to avoid summing. I did not include it due to cost. Illuminated push button switches are for enable/disable. Normally red and channel disabled. When pressed it turns green and channel enabled.
I am now looking into an expandable version. I am also brain storming for a digitally controlled version. Another good friend (from Montenegro) gave me some AD8113 chips to play with.
If there is interest I can put a kit together. However, I will probably design a new motherboard and incorporate in/out connectors to eliminate the hard wiring.
![1724162201562.jpeg 1724162201562.jpeg](https://cdn.imagearchive.com/groupdiy/data/attachments/87/87055-74510a2e1daa01fdf96ae554be888a0b.jpg)
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