[sdiy] LM3900 Sub ( more info then you'd ever wanted! )

[Phil Harbison]

Scott Gravenhorst wrote:

> In one of those email exchanges discussing the LM3900, someone else also
> pointed out, and I just looked to confirm that the pinout is one of the
> stupidest for a 4 amplifier package ever.

That is indeed a strange layout. Perhaps the designer thought
it would be useful to tie the (+) inputs of two amps together
and therefore made those pins adjacent. I cannot think of any
other rationale for this layout.