DaytonAudio DSPB Series, User Manual

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D. Example – DSPB-100 Mono DSPB Sigma Studio Project.
This basic example project is intended to be used with a DSPB-100 mono board, and can be configured
to power a subwoofer or simply a full range mono speaker. Just change the filter appropriately. Follow
the quick start guide above for your DSPB, and then read the ICP1 Sigma Studio guides above for how to
use the project file “DSPB -100 Mono System.dspproj” that is available in a zip file on the product page.
See below for a description of each labelled section, and note that this is only an example of what you
can do in SigmaStudio. You are encouraged to explore the program yourself, and also to view other
ADAU1701 projects and advice that can be found by searching the web.
A. Input – Inputs 0 and 1 will correspond to the left and right channel of any audio input. For this
example, we assume a Bluetooth KAB board is not connected, so this input will correspond only
to the 3.5 mm jack hooked up to J6.
B. Gain Control – This master gain control is connected to POT1 on the DSPB.
a. It is recommended to make gain controllable with hardware, but this could be changed
to a slider type of control if desired.
b. If you want to use a different potentiometer for master gain, simply change AUX_ADC_0
to any of the other options in the dropdown menu.
C. Mixer – This section mixes the left and right channels to make a mono signal.
D. EQ Section – SigmaStudio has many possibilities for this section, available by navigating through
the Tree Toolbox and paying special attention to the filters section. The parametric EQ found in
Filters > Second Order > Multichannel allows for visual adjustment of filters and is what we use
here as it is the most user friendly, but there are many other ways to achieve EQ. Click the blue
icon in the block
to adjust the PEQ.
a. Note: You might need to reflash your board by hitting the “Link Compile Download”
button to hear the results of adding a new filter in the PEQ mode.
b. Results with this PEQ can be dramatic. Take caution to avoid overloading speakers.
c. Warning – Read the warning at the beginning of section 3 about this block.
E. Filter Section – Here we have a high pass filter as an example for a “1.0” mono system. If you
want to use this setup as an 0.1 system (just as a sub), change the high pass filter to a low pass
filter by clicking