One more layout to retrofit into SD-1

[Crazyyellowfox]

http://crazyyellowfox.net/sd14558.pdf

I made one more layout for the Op Amp in the SD-1. I won't get a chance to test drive this until I can crack open my SD-1
at my folks' place next month. If anyone one does get a chance to try it, let me know if I've made any errors.
Again, for space consideration, resistors are crammed as to either be 1/8watt or standing on end.

I feel like I missed the bus on this thing since all the action seemed to take place about three years ago

[Crazyyellowfox]

http://crazyyellowfox.net/sd14558-soic.pdf

Sorry folks, I couldn't help myself...

This is a good one to test one's soldering skills with. soic 4558 saves a good 1/4 inch of board space.
I like this better because the pinout matches a dual op amp better without having to twist one side of
the cabling for the pinout to match.

Pinout matches if thru-hole parts are face down, solder-side up.

[Crazyyellowfox]

I put this together over the weekend, it works and it fits! Sounds great, too!

Will post sound clips tomorrow, but for now:

[Joe]

Looks awesome.

[Crazyyellowfox]

Here's what is sounds like.
http://dl.getdropbox.com/u/561191/sd-1.mp3

It's a lot warmer and brighter than the 4558 chip, and a bit more transparent, but what I realy like is it has
just the right amount of "fizzle" like frying bacon with every note. I used BC557s and a 2N5088 for this board,
this combination biased at 5.6k for me.

I knowit probably doesn't need to be said, but I made the mistake. pinouts for BCxxx trannies are different
from 2Nxxxx so be sure you have the emmiters tied together on the PNPs when building this circuit.