LM4781-3 Way Active Speaker

RaviRao

Member
2008-01-10 12:09 pm
Hi everyone. Seems like a lot of people have tried the LM4781 PCB design and have various degrees of success I have not found any design on this forum that came reasonably close to the reference design. Although the Ref Design is double sided, I have done a single sided design which I have presented here for your comments.

[IMGDEAD]http://file:///home/ravi/gaf/Projects/AMPLIFIERS/POWERAMP/LM4781/LM4781-STD/V5/LM4781-V5.png[/IMGDEAD].
 
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RaviRao

Member
2008-01-10 12:09 pm
At LAST Here they are....Thanks for the patience and sorry for the bother...

Thanks very much Douglas...

View attachment LM4781-V5-PCB.pdf

View attachment 3WayActiveSpeaker-FILTER.pdf

3WayActiveSpeaker-FILTER-SCHEMATIC.png

LM4781-V5-SCHEMATIC.jpeg
 

RaviRao

Member
2008-01-10 12:09 pm
Some more images that complete the set. I have made the PCBs in an effort to poulate a 3 way system I currently have with a corner Klipsch 12" version that i made way back in circa 1989...that still amazes me with the low frequency response:). I have repurposed a Sony 2 way speaker to reproduce the mids and highs. If anyone is interested I shall post the progress of the project as it happens....it is however likey to be a bit slow...grandparental duties and all that:D

3WayActiveSpeaker-FILTER.jpeg

LM4781-V5.jpeg