-40%

Hammond 1140 - DB - A DI box transformer

$ 31.67

Availability: 100 in stock

Description

This is a professional grade transformer for passive DI boxes. I bought it in order to build one, according to this video:
https://www.youtube.com/watch?v=-h_YrYcnPdI&t=28s
The last picture also illustrates the connections.
I installed connectors at the end of each wire so as to easily change wiring if I made a mistake.
It was easier than I thought - I tried it without the box and it worked, and without any hum or noise for that matter. However it didn't suit my intended application (I wanted to output my bass guitar to the microphone input of my computer)  because it drops the output by 16 or so dB and I had to top-out the gain which aggravated the noise problem that the Soundblaster card has with its mic inputs.. I later found out that dB drop is natural for passive DI boxes as in order to increase current for the same power, voltage needs to drop, that's the way passive DI works... but I didn't know  this "tiny" detail when I ordered it. So, since it's such an expensive transformer it is worth reselling.
It was bought from Mouser Electornics, as you can see in the receipt.
What you are getting is everything you see in the pictures, which is what need to create your own DI box apart from the box itself: the transformer (cost ) ground lift switch, 2 mono 1/4" female jacks and a high-end metal XLR output jack. All wires from the transformer have connectors in place for easy connectivity.
The set will be sent expertly packed. See my seller feedback, you can buy with confidence.