Leaderboard

Milled a new “corrected” board on Sunday. When populated and ready for test the bloody thing worked fine for a few seconds than it started to decrease voltage slowly down to 230 volt or so. I started to change component by component and when just a few unchanged I replaced the dn2540 and issue solved, phuuu. Anyhow. Now the regulator seems to work alright, okey just 10 – 12 mA of load. With trimmer (200R) there is a range of 5V at 400V. Picture shows 400.0V and after 20 minutes the meter in “minmax” says average 400.0V within -0.0/+0.1.

And a new MacBook Air... less crippled than the previous one – new CPU, keyboard, lower price: https://www.macworld.com/article/3532801/apples-new-macbook-air-packs-a-better-keyboard-and-a-dramatically-lower-price.html

Woke up to this in the morning. It actually melted in the valley and on the east side mountians by me by mid day. Took the kids to the mountians on the west of the valley where it's high enough to keep b snow.

"Toilet Paper Taped to a Wall" $120,000 OBO.

A rare view from our back yard, snow in Southern California. On a somber note, the three houses under construction in the lower left are the result of the fires from last October.

Miss "Extended 12" Versions". They often added something.

for the opening lines alone.. :)-

That is pricey, but when my keyboard folio bites it I will likely get the magic keyboard, because magic. (Typed on my keyboard folio).

Do we care about new Apple products in days like these? If so, the new iPad Pro looks pretty nice. Merging continues.

Phillips 8417 Tube. Click for slightly larger.

This is now my new theme song.

I've been listening to these two a lot lately. Metal/mostly clean vox (1 f, 1 m), dark, gothy, minor chord progressions. https://frayle.bandcamp.com/album/1692 https://thedhaze.bandcamp.com/album/deaf-dumb-blind

Spatial Audio X5.

RIYL Tool, drumming

Yes indeed! Want!

The coolest part of this video besides the beautiful powder and mountain back drop is how this guy managed to hide the selfie stick in the video. aBg5xmP_460sv.mp4

Correct, you just need separate windings, not necessarily separate trafos. And the lower diagram would work fine. For me, with 370V B+ rail, I have R1=470K and R2=100K. That gave me 65V for filament elevation. I did not use C1, but that could only help.

Interesting. It's on Tidal as well.

http://deewm.com/Webcache/The_Valve_Wizard/Heater_Filament_Supplies/Heater_Filament_Supplies.html something like this(lower pic)? it is basically same like valve wizard, but with artificial centre tap. also what i found regarding separate trafo/windings.. what i understand, only separate windings are needed, not two transformers. somebody please correct me if i am wrong.

Watching a combo pack of: Ken Burns - Country Music https://www.pbs.org/kenburns/country-music/ and Ken Burns - Jazz https://www.pbs.org/kenburns/jazz back and forth keeping the timeline roughly in the same spot both worthy

Yesterday I realized that, unconsciously over the years, I have bought almost all of Trane's discography on vinyl. Today touch this PS: Every day I enjoy more of my Pass Xono DIY.

Unfortunately I'm going to have a lot of time to go over my vinyl collection ...

Mating Call

Neat list. He missed the Contura. I got to play with one of these for a bit.

Top Ten Most Beautiful Cameras of All Time

Now it’s tomorrow and it turned out to be long day. My work flow nowadays is first schematic and then board layout. The idea is that I can’t make a board that doesn’t follow the schematic and in the end minimize board errors. And it actually reduced my errors to almost zero… but an error in schematic will guarantee a board that is schematically error free but also something that doesn’t work properly. Two errors in schematic are now corrected and the little thing works like charm. By the way - yesterday was a Friday 13th, wasn’t it?

Meh....it's just smoke and mirrors. It's actually a fake chassis for the McIntosh gear, and each houses this little Tripath amp inside:

Some people like that amateur stuff. Different strokes, so to speak.

Talking heads and Wham! - it is the music that makes the system...

Friend of mine just picked up a $7,000 door stop.

Klipsch Cornwall IVs. In the parlance of our times, BRUH.

Apparently a pile of 'hornlets'?

From the datasheet for those Hammond output transformers: Designed for general purpose or replacement use (not Hi-Fi), in single ended, tube output circuits. Frequency response: 100 Hz. - 15 Khz at full rated power (+/- 1db max. - ref. 1 Khz). For full frequency response (20 Hz. to 20 Khz.) - see our 1627-1642 Series. A single one of those circuits in a plywood case should run you about $400. And be used in a garage system at best.

So from the toe-in angle of those 801s and the distance that they are apart - I would guess the listening position is about 6-7 feet away (in a room that is not much bigger). One thing I know from being an 802 owner for 20+ years - They need to Breath!.. anyway - nice rig...

Akai UC-5. I love that 80s aesthetic.

Maybe not Speaker Porn these days, but back In the day these were pretty hawt. Altec Model 19. Woofer: 15” 416 , Mid/high compression driver: 802 , Sectoral horn: 811 Very efficient: rated 104dB @ 4 foot sensitivity. Sound great with single watt SETs, but will still take 175 watts continuous. Too large for my current living room, been stored in my garage for years. Fired them up today....my neighbors were not amused.

Vince from Totem Acoustic standing with a bunch of prototypes.