Balance/Fade capability
Hi,
In hopes of using 4 speakers I have in my backyard via Bluetooth, I purchased the KABD4100 from Parts Express.
Having 4 speakers I expected to be able to modify sound by bass/treble plus be able to fade or balance the speakers sound.
Speaking with Parts Express they suggested I visit this forum because there's no way I can accomplish what I want to do and maybe someone here has a solution.
I'm really looking for an already made "project" that I can download to the KABD4100.
I have no experience whatsoever. I think I got into more than I could handle. I would be willing to pay for a solution.
Thanks
KABD4100
hardware
Hello,
Perhaps you're not in as deep as it looks. That's because Dayton Audio has done some of the heavy lifting for you. Their boards appear to be better documented than most out there. If you haven't yet downloaded these files, please do so before continuing:
User Guide
SigmaStudio Programming Guide
Sample SigmaStudio Projects
Read through the entire User Guide to see what you're getting into. If anything doesn't make sense, you may wish to obtain some local help from friends who are into DIY audio. BTW -- I have not used this board, so I cannot offer much in the way of hardware help. My advice here is mainly about the ADAU1701 chip and SigmaStudio.
Have you tried the board with its built-in default program? For example, connect your speakers to J13 and J14, and connect four pots to the POT1 -- POT 4 ports. Dayton Audio has prewired pots and mating connector harnesses for nearly everything, which makes all this easier.
Turn all four pots to minimum (CCW). Be very careful not to short any of the bare terminals on the pots, etc. together. Connect your 12V-36V DC power to J15, pair a phone or other Bluetooth device, and try the controls until you hear what's playing. Once the hardware is working, make it all permanent -- properly mounting the board on standoffs, and its control pots on a panel in a suitable enclosure before proceeding.
. To get you started, I attached a project with volume, bass, treble, and a "front-rear" fader. Note that the ADAU1701 has inputs for four pots so there's no fifth control available for a left-right fader (balance control). Of course, you can allocate the four pots however you want once you learn how to work with SigmaStudio. I made this project by modifying one of Dayton Audio's sample projects, the best way especially for beginners.
Programming with SigmaStudio allows you to change virtually anything the hardware allows. Once you get into it, it's fun to see what else you can do. The project below uses about 600 DSP instructions out of the roughly 1000 available, so you have plenty of room to play. The SigmaStudio Wiki is your programming resource.
4.0 Speaker Project.zip
Best regards,
Bob
Hey Bob, I tried to thank you via the email I received several days ago but the message was undeliverable. I still haven't been able to install your project file but I will soon. Thanks so much!!
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