I would recommend that the ground be isolated on each half of the pcb so two independent supplies can be created for power multiple analog circuits.
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These amp boards are designed by highly capable engineers and assembled via modern manufacturing methods.
24 0 24 to 30 0 30 dual supply dc 7 a after rectifire.
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For the amplifier circuit i spent a couple of weeks researching and evaluating possibilities and settled on the eaumt 0050 2 a class d amplifier board from 3e audio in shenzhen city china.
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The universal power supply pcb s or very nice quality boards.
An amplifier is an electronic device used to increase the magnitude of voltage current power of an input signal.
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Depending on the changes it makes to the input signal amplifiers are broadly classified into current.
Add a suitable power supply an enclosure if required along with the associated controls and interconnectivity and you re ready to go.
Fan required on 30 0 30volt.
If you look at the pass diy 40 watt amp and split the ground so each 1 2 of the filters and supply 2 independent voltages.