MY DREAM AUDIO PROJECT

I just got 5 Lm3886 and 5 Lm4780 from NS and started my Dream audio project. 3 way active speaker system and one subwoofer. I had finished making PCBs for Lm 3886.

Schematic is as follows

Speaker Sets  - Floor standing, Woofer (10", 100 Watts), Mid-range(5.5", 50 watts) and Tweeter (50 Watts)

Subwoofer - Sealed enclosure, 10", 200 Watts

3 Way active X-over

Subwoofer filter based on Sound west project 48 - www.sound.westhost.com\project48.htm

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Some Pics

- ICs shipped from National Semiconductor

- Test circuit for Lm3886 made on strip board, tried with 2 different component layouts.

- PCBs for Lm3886 in progress  => My method of making PCB

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Circuit

PCB and component layout.

This layout i have made after studying some layouts available on internet. I have tried to keep separate Power ground and

signal ground, and also include star grounding for feedback.