Candy Di-Box project

Tonight I was in the shed constructiong an in-line speaker load box and I decided to throw together a simple passive DI-box out of whatever i could find in my electronics junk box.

For those uninitiated:

A DI unit, DI box, Direct Box or simply DI is an electronic device that connects a high impedance line level signal that has an unbalanced output to a low impedance mic level balanced input, usually via XLR connector. DIs are frequently used to connect an electric guitar or electric bass to a mixing console‘s microphone input. The DI performs level matching, balancing, and either active buffering or passive impedance bridging to minimise noise, distortion, and ground loops. DIs do not perform impedance matching.

DI (pronounced dee EYE) is variously claimed to stand for direct input, direct injection or direct interface. DIs are extensively used with professional and semi-professional PA systems and in sound recording studios.

Thanks Wikipedia!

Anyway, I found this nifty old tin can that origionally came with candy inside.. It has a lid with a plastic window that lets you see into the box’s wiring.. The tin itself proved easy to drill and nible at, so this project was complete, bar the screws, withing half an hour.

I used an old sennheiser tm003 transformer. Only trouble was some of the wires were broken, so I had to open the casing to get to the wires inside.

In case you’e never seen inside one of those cases here goes:

So far, so good!


~ by headcaver on October 30, 2008.

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