Other Parts Discussed in Thread: TPA3255
Do to recent availability of the LM3886 Audio Amp IC back into inventory after a long period, I am trying to design a 400w Bass guitar Amplifier utilizing 8 LM3886 chips. Referencing the AN-1192 Overture documentation for building a PBA200w power amp I noticed multiple schematic layouts for Bridge/Parallel. I’ve also purchased a few DIY PCB for reference and I see two different layouts:
#1 A pair of IC in forward orientation for the Positive Speaker output and a pair in reverse for the Negative speaker output.
#2 A layout where each pair of IC’s has 1 forward and 1 reverse orientation.
Can you make a recommendation for the best Schematic layout to use for Bass Guitar application to achieve High power 400w @ 8ohms. I currently have a 400w discrete circuit design and would like to also build a LM3886 version to compare and test for best Audio quality, cost, and performance.
Thank You!!!
