Help with JAB4 with ADAU1701 Sigma Studio project

Hello Claudiu and others reading this,

If someone offers to help please post here as well so I know you have someone helping.

Meanwhile, it would be good to get started by defining what you need to get done. Inputs, outputs, levels, functions, external controls like pots and buttons. Defining the application will be important for the work.

Did you purchase the JAB4 amp already? Do you have some extra things like the pots, switches and LEDs that you can get? I assume you have the programmer and power supply?

Dave T

Hi Dave,

Just so everyone is aware I did offer to help Claudiu offline if he is not able to get help from this forum. I have over 10 years' experience using SigmaDSP specifically the ADAU1701 and have several current projects using ADAU1466, and I'm still learning as well. I enjoy your posts and the help everyone is giving here.

Cheers,

Alex

Hello Mr Dave and thank you for your reply and offer to help.

Yes, i have a JAB4 amplifier with all the functional cables and potentiomenters. For now im just using one potentiometer, the main one for the general volume.

My setup is as follows:

The amp has 4 outputs, 4x30W. Im using it for 2.1 system.

2 outputs (2x30W) are used with 4 speakers (15W each). 2 speakers on one output (parallel) and 2 speakers on the other one.

Mids and high drivers: https://www.soundimports.eu/en/markaudio-chn-70.html

The remaining 2 outputs are bridget do get 1x60W for the bass.

Bass driver: https://www.soundimports.eu/en/dayton-audio-dcs205-4.html

So its a 2 way speaker

Im very new to this field and trying to get a grasp of SigmaStudio and ADAU1701 and so on but i find it a little overwhelming.

I would like someone to help me with a program in SigmaStudio for this chip.

What i would need is:

1. Crossovers to adjust the frequencies of the highs and lows

2. Some EQ to be able to fine adjust the mids and highs and bass why not.

3. Compressors if needed (some stuff i dont know)

4. Limiters to be able to limit the gain of the speakers to eliminate distorsions if needed

5. Dynamic bass - i saw that it is possible to adjust the bass dynamically and set some rules or values depending on the main volume to adjust the bass automatically

6. Other blocks that im not aweare of and would be good to have in this situation i presented

It would be helpful to have a basic starter project with some functions like the one described above to be easy for me to make adjustments and maybe evolve the project from that while im learning

The projects that i saw online seem complicated or i just dont understand them very well so it would be a great help for me to start using a more basic project

If your are able to help me with this it would be great

Thank you

Best regards