Radial x amp 1 in 2 out active re amping device active re amping device with class a signal path variable output and ground loop elimination 199 99.
Active di box diy.
For example if you were using a passive di to send an old fender bass to the console its single coil pickup had to drive amp transformer mic splitter transformer.
I designed this di box in the middle of 1970 when i worked as a recording engineer.
What is a di box and how it works.
Active 2 channel di box splitter with phantom power 3 position input attenuator and internal battery 28 00.
A di box also called direct box direct injection or direct input is a transformer based module that converts an instruments high impedance unbalanced signal to a low impedance balanced signal.
Born out of necessity in studios such as motown and united sound systems to accommodate the electric instruments emerging in the 1960s direct boxes also known as dis which stands for direct inject began as a way to resolve a basic impedance mismatch between electrodynamic guitar pickups and sensitive studio electronics.
During this period there were mostly just home built passive di boxes with small transformers like beyer kemo or sennheiser around the studios here in sweden.
Active direct boxes are in fact preamplifiers whose primary function is to provide higher input impedance than that of a transformer to drive instruments with low level signals.
0 interest for 36 months i.
Active di box my work horse from 1975.
Rm 5 diy ribbon mic blumlein recording of an acoustic band.
We are moving to a new location.
A good passive di will thicken and smooth the sound in a way that a transformerless active di will not.
The renovation of our new work space is progressing.
Below is the schematic for the di box.
Although many modern dis are far more.
Or 6 month for 36 months.
Click on images to enlarge.
And unlike a reamping box where a budget.
What is a di box.
Our diy di box so essentially we are going to use a transformer to create a very simple but good sounding and reliable di box featuring an unbalanced input a link output for connection to an amp a ground lift switch and a balanced xlr output.
Yet here i am telling you how to build a passive di.