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A Modular 2/3/4/n ways Digitally Controlled State Variable Active Crossover
A Modular 2/3/4/n ways Digitally Controlled State Variable Active Crossover
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Old 17th September 2018, 10:04 PM   #21
dondo is offline dondo
diyAudio Member
 
Join Date: Mar 2011
Default I2C attenuators PCBs populated!

Here are 3 pictures of my new 4 stereo volumes populated PCBs for the Xover44 project.
well I still need to receive some components I ordered long time ago.

Anyway, in the project, 2 of those PCBs are needed for the 3 or 4 way configuration. Just one PCB for the 2 way configuration.
One board provide already 2 stereo volumes with a 16 step (4 bit) control each.
With the resistors I installed in the prototype it provide volume controls from 0db to -7.5db with 0.5db steps, but can be configured differently.

The board can be used in a passive mode not installing the op-amps like in the picture. Otherwise can be configured to have a small gain.
My next step is to update the software with the attenuator controls code, install the new boards and test them!
This will take some time...

Cheers!


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