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Just fired one board of mine up tonight with the GRLV, almost perfect +/-20Vdc. I had been running 301R bias resistors with the previous +/-18V sigma22, with a bias current of 17-18mA. With the same bias resistors, it was now at 18-19mA, and had I run it longer probably would exceed 20mA which is too much. With 249R, the bias current was only around 10mA (didn't let it run long). With 261R, it was at 11-12mA. I currently built up 277R with a pair of resistors, and the current was around 16mA when last checked. I'm wondering why Michael's seems to bias higher with lower resistor values? The only difference that I know of is I am running FET inputs (sk170/sj74) and not the THAT bipolar. Mine is out in the open, and I don't have an IR thermometer, so I can't check temps. I've run it and used it for several months now at 18V with the 301R in place.

Norton doesn't seem to like his site, so I haven't gone thru the security warning yet And probably won't bother.

I think he hangs out on the pinkfishmedia.net forum, but not sure how much he contributes. His stuff seems to be well-thought of there, and from what I gather is dissed on the Naim forum, which is probably a good thing

424 isn't a std. value. 422 is. Close enough? PN is TNPW0805422RBEEN PN for R54 should be TNPW080510K0BEEN for 10K.

FME, only cunts(tm) have their auctions private on ebay. Usually for shitty reasons such as the POS, to obscure their activity.

That wasn't from Hinsdale to Two Brothers was it?

I thought that most preferred the sound of PCM to DSD? I guess I haven't followed this (obviously) over the last few years, but what is the fuss over high rate DSD?

I thought Kerry had posted a BOM for this? Here is the one I have from Kerry's . kerry mini ssdynalo-v1-4.xlsx

Not at all. They only measure ~26mm in width, at least on my rims. You would need to check clearance on your bike. The make 23, 25, 28 and 32 in these.

What an accomplishment! Happy Birthday!

Try a pair of Conti GP 4 Seasons. Almost as fast as a GP4000 (built on same or similar casing), durability of a Gatorskin with better traction (wet). Available up to 700 x 32 (I run 28s personally).

That does suck Steve! I hope you get good news from the hand Doctor, and best wishes on your recovery. Sent from my iPhone using Tapatalk

RIP John... I'll bet he didn't think he would live to 95 when he was sitting on top of that Mercury rocket. Damn. Sent from my iPhone using Tapatalk

RIP Greg. Man he had a great voice! I saw them live 3-4 times in the '70s, including the Works tour with full orchestra. Always great live. 2016 needs to fucking die! Sent from my iPhone using Tapatalk

belated Happy Birthday as well, Tom!

Hmm, the PCM56P-K is still available. RS has some in stock, Mouser and Digikey show them as obsolete but seem to have some SMD packages. Interesting. So, you got on Jocko's shit list, ehh? From what they were saying on diyhifi, the PCM65 is a PCM63 with maybe extra power and ground pins? Other pins seem identical to PCM63.

I'm sure you have a few laying around Kevin... I don't live that far away Surely you have a few ovens around Mr. Baker-man. Any old toaster ovens? Timer/programmable?

Was playing around with input voltage and looking at dropout. This doesn't drop out of regulation untli input is ~16.8Vac or so (output is still at 19.95Vdc). DC at the filter caps is ~22.7Vdc at that time (IIRC). I thought it would drop out before that. This is completely unloaded. I think I will go with the 20V transformer, as Michael suggested. Even at 24Vac input, pass devices were not warm, though I'm sure that will change when it is loaded. EDIT: trying to recall, do most builders tie the AC ground to the PSU or amp board grounds, or just to the chassis? Don't any RCA connectors, etc. in effect tie the board ground to AC ground/chassis? I know that XLRs wouldn't.

Watched it last night -Wow! And I of course missed the scene after the credits, must re-watch. I think I will watch the entire season again. Too bad my wife hates it Sent from my iPhone using Tapatalk

Yep, thanks for all you do Todd! Sent from my iPhone using Tapatalk

Oh all right... with std. rectifiers With Schottky bridges One other thing I noticed while playing around with this. Since this is just on a piece of wood, I don't have the AC ground tab connected to anything. When checking AC voltage between it and the board ground, it was floating around at 50-60Vac. I assume this is normal since the board isn't really referenced to anything? Should I tie the AC ground tab to the board, either directly or thru the 10 ohm resistor that is provided?

http://www.ribblecycles.co.uk/continental-gp4000s-ii-twinpack/#pid=30229 $60/twinpack in 23 or 25. Shipping sometimes free, often are faster delivery than US based shops.

Thanks Kevin. Another dual GRLV lives! Used the 160VA xfrmr I had with a variac, set it for 20VAC off the secondaries. GRLV set for +/-20V, output is within 1mV between sides. 1% resistors, but kelvin matched. Need to order proper transformer. Can't wait to get a listen to the dynalo mk2 using this instead of the sigma22 I am using currently.

I'd probably buy something used like a Fluke 87 or 89 (or the 1xx or 2xx versions of these) instead. http://www.ebay.com/itm/Fluke-87-III-multimeter-/222331189225?hash=item33c3f8b7e9:g:nLIAAOSwB09YPxDk

I know the AD1862 was always one, if not the favorite of Jocko (Pat). My CD players are still PCM-63 and TDA1541A. Still a lot to be said for these. I know the AMR CD-77 still uses the TDA1541A.