Pars

Also seems to lose track of some read items. My setting are set for Show me all content that I have not read... Some items that I have read reappear on subsequent visits.

It appears that what it is doing is putting up individual instances of the thread for each unread message that there is in the thread. If there are 2, you get the thread appearing twice, etc. At least that is what looks to be happening.

Looks nice Kerry. What layout software are you using? My only comments would relate to pad sizing, particularly for the TO220 devices. I much prefer the larger elongated pads for these as they seem to help regarding rework if needed.

HTFU...

probably "8" followed by ")"?

Yeah, I like the screw mount heatsinks a lot better than the pin mount ones. I would imagine getting those out of a tight space would be teh suck.

Yep, great news Reks! And good luck on the position Dan!

Did some reading on headwize, so the max resistance sets the lowest biasing; decreasing this increases the bias current... DOH OK, got my 50 each 'O' A1145/C2705s from Mouser and did some matching last nite (oh fun ). They were pretty consistent but not matching well between NPN/PNPs. The NPNs ran from about 95 to 114 hfe, while the PNPs were from 118 to 155, with all but 6 at 140+. Device classification range is from 80 to 160 for the 'O' devices. I do have some 'Y' devices with hfes in the 150 range for the NPNs (not enough, but some), so I may use this approach for anything deemed critical. Speaking of which, are there any areas where the devices should be matched well? Output FETs obviously, and the 2SK/2SJ parts should be as well. I mocked this up on the schematic indicating areas where matching might be important. Any comments?

Happy Birthday Mike! Trip to FFF today? Have a great one!

Sorry about the snow guys... its currently -6° F here, light wind so not too bad. At least the sun is out

I immediately thought that M-80s might be fun...

Didn't read your welcome pm, did you?

I currently have my setting on "Show me all content I haven't read". When I do a View New Content, I get the same thread appearing more than once. I'm up to 2 pages now, but probably the same 12-15 threads in it...

Private Messaging: No Sent items folder?No message receipts?I know, bitch bitch...

Yep. Thanks Todd.

So by maximum value, you mean highest resistance? Should I replace the 20K resistors with 10K? For initial startup, should I reduce the resistance (pot) somewhat until I can monitor it (and increase)? Is the consensus for 1/2 populated output stage current to have a target of 75mA? 150mA? Or something in between?

I just used the Delete Cookies and logged back in. Same behavior as before.

Same since 8:00 am CST (first time I was on today). Advanced search doesn't help because it expects a keyword.

Yes, I agree, but I do not know where the 1W recommendation came from. It isn't noted in Kevin's hand-drawn schematic, and in Jacob's (j4cbo) first pass BOM spreadsheet, they are shown as RN55s or 1/4W PRPs.

Thanks, but if you read the thread completely, the ADA4898 will be used for buffering / SE->balanced conversion only. I/V will be done with a discrete stage designed by Colin Toole (cetoole here). Regarding the input filter: yes, I just noticed that when I posted this thread... not sure why I didn't see it (and remove it) when I replaced the NE5534s with THS4031s (with much bypassing).

R31-R34 don't look like they are set up for any power running thru them:

Actually there is quite a bit of room in there, though looking at them I'm not sure how you are supposed to mount them. I think I'll remain a wimp, though ya never know... BTW, is an I/V resistor the only other thing you need with these, or do you have to AC couple them as well?

Yeah, that gives a lot more insight into things, and makes my snarky post sound, well... snarky. So if the Appeal is ruled in favor of the plaintiff, what will the effect on Russ' business be? Is it a monetary judgment, cease and desist on the product in question?

I don't think you want to do a ground rod, but I'll let Kevin or someone with more experience weigh in on that. +1 on running new wiring, and probably plan for 20A circuits.