I was planning on using LM317/337 simply because I have some on hand. They've been said to be better than 78xx/79xx regulators, but I doubt they are *very* much better.
That said, there is a fair amount of room on the PCB if someone wanted to improvise a small discrete daughter board or some such thing
Here's a deadbug build of Joe Curcio's LM4562-based preamp from National's app note 1651 that I made last year. I designed a circuit board and redid it a few months ago. Building deadbug style and designing a PCB were both new experiences for me.
- Eric
Attachments
I'm at Sea Ranch ... It's taking a
long time ...to be
hand-jobbed ... It's almost done...
Mr. Pass, is this for lack of better term?
Take your time...editing.
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There's a TP & note in the silk to set P1 for 0 volts. So that's taken care of. Just need to figure out how to calc Cx & Rx. (I'm still confused by Cx. I need to brush up big time on my circuit analysis.)
But it's so much easier to wait for Wayne and Mr. N.P.
(uh... not holding my breath, but I'm sure it'll be done in due time)[...] time because a lot of the captured graphics have to be
hand-jobbed to be clearly legible. It's almost done...
Thanks!
-Chris
That's my plan! And, my boards landed today. Many thanks to the Pass team, and of course, diyaudio!
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Cntact member Westend. If he still has some of the extrusion left, he makes a dandy box. Mine was very reasonable.
Russellc
Perhaps the output impedance of the Pearl 2 is sufficiently low for a buffer to be unnecessary. Anyone know?
Well I was lucky enough to find a link in the B1 section that took me over to a page on Audio Circle that has a BOM for it. I will slowly start to purchase everything for the B1 and Pearl 2. Since this is my first endeavor into this type of work I want to take it slow and not overwhelm myself. Heck, reading half of what you guys write makes me want to go back into my little hole.
James
James