All Activity
- Today
-
I'm currently listening to an "Arcadia" album you might like better.
-
The Official Head-Case Photography Thread.
blessingx replied to Knuckledragger's topic in Miscellaneous
For jealous users of other systems you have options https://www.polarpro.com/products/lightleak-lens/ -
"...you can add a (randomly-assigned) light-leak..." 🤣
-
The Official Head-Case Photography Thread.
Grahame replied to Knuckledragger's topic in Miscellaneous
"Fujifilm’s X Half camera is so dedicated to the analog vibes, it can’t shoot RAW" https://www.theverge.com/news/672268/fujifilm-x-half-digital-compact-camera-fixed-lens-analog-price-specs -
The Official Head-Case Photography Thread.
blessingx replied to Knuckledragger's topic in Miscellaneous
Maybe I was a little cynical on the initial X half reception. https://www.techradar.com/cameras/compact-cameras/fujifilms-x-half-is-a-tiny-retro-compact-thats-big-on-wacky-film-photography-features-and-i-love-it -
The Knuckledragger 3rd Memorial Slow Forum Post
Dusty Chalk replied to Knuckledragger's topic in Off Topic
-
The Official Head-Case Photography Thread.
dsavitsk replied to Knuckledragger's topic in Miscellaneous
+1 -
The Official Head-Case Photography Thread.
dsavitsk replied to Knuckledragger's topic in Miscellaneous
. -
Even In Arcadia by Sleep Token (2025) https://album.link/wrrmhmkp0rqpq Example: Second listen through this album, before I go back to Copland. It is a good album. But listening to the album, which is what I do, it does become a bit samey for me. Any individual song hits pretty hard. But song after song they seem formulaic. Start slow, with some soft vocals, transition into some rapping and harder bits, then head into the screaming section and then break it back down before the end. Works great for one track, but not as an album for me. Production and playing is still great.
-
Unfortunately LT1236 has also insane price. SUPSIC produces GC2M1000170D 100% the same specs as C2M1000170D, costs 1.5$.
-
The Official Head-Case Photography Thread.
blessingx replied to Knuckledragger's topic in Miscellaneous
^ Keep posting! The most hated camera of 2025 will be released tomorrow. Sounds kinda fun. Too bad about the $150 Orange Tax. -
The Official Head-Case Photography Thread.
Knuckledragger replied to Knuckledragger's topic in Miscellaneous
I've been engaging in a bit of a photographic revisionist history/redemption arc. 2006 was a crazy year. I was working 3+ nights a week doing lights in nightclub (in addition to everything I did all day), and doing other sporadic events as well. It was mostly fun and I made enough money for it to be worthwhile. I cannot imagine doing it now. This was a time period right before LED luminaries became mainstream and most club lights were halogen or arc bulb based. This meant normal people could not operate or maintain them, so there was a niche I was able to carve out for a one man lighting business. All of that would change by the end of the decade. During this time period, I took a ton of photos. Many of them are really awful. To the point, the edits I posted were terrible. I operated under the misguided notion that cropping a tiny section out of a 5MP original (taken with a mid 00s point & shoot sensor) was a good idea. Also many of the photos were of the partygoers and in my opinion even the originals for most of those shots are just bad. In 2007, partially inspired by some scene drama, I privated ~1500 photos on Flickr and got on with my day. There's still a couple people from the mid 00s who have a grudge against me because of shots I took during that time. (There's a long story here about a garage house DJ I knew who had a very attractive and insanely jealous girlfriend. I had a photo of him ogling a go-go dancer, she saw it and got mad at him. He of course blamed me for his dysfunctional relationship.) Oh wait, I still have the relevant photos: ...but I digress. 2006 was also a significant year because it was when I bought my first DSLR (EOS 30D that I made heavy use of for entirely too long.) I bought the 30D because my PowerShot S60 died ...twice. Canon were real shitters about fixing it. I have been going through photos I took in the first half of '06, all taken with the S60. The process is slow and laborious, but it's therapeutic for me (and lord knows we all need some therapy these days.) I have been working from the original images (fortunately, I am a compulsive archivist and data hoarder), doing minimal edits and the then replacing them on Flickr. This is a process that no one besides myself will ever appreciate. Lucky for me I'm an only child and my primary audience. As I mentioned above, many of the shots are not salvageable. Using the built in flash on a ca. 2004 point & shoot while the club is full of fog is a benighted idea in the best of circumstances. I took a LOT of photos during this time period and it may well be years before I've finished this task. The following is a small sample: Spinning fire, Jan 2006. 0.4" handheld. I had no idea what I was doing. Re-cropped square but otherwise unedited. Same party as above. My friend Ed, who is a video artist and electronic musician. He has a tendency to hold still for long periods of time. 1.6 second exposure, with the camera sitting on ...some object (I no longer remember what.) I've got a long story about Ed I might tell some day. Re-cropped square, no other edits. A slow night at a Sunday event I worked in an expensive but ultimately shitty bar. 4 second exposure with the camera sitting on case. Cropped 2-3, but otherwise unedited. Same club a month later. Around that time Technics tried to compete with Pioneer in the CDJ market and made a really weird and poorly received product. They made for an interesting light source however. 4 second exposure again with the camera resting on an equipment case. Re-cropped 4:5 (my favorite aspect ratio) but otherwise unedited. Longtime reggae DJ. He's got a huge local following. I never saw eye to eye with him on a great many things (I could write a fucking book on that subject, but I won't.) 1/4 second handheld. I could hold the camera pretty steady for such a long focal length. The joys of a 5.8mm focal length... Part of the live kit belonging to Ed, the bald fella from a few shots above. Not a good photo at all, but the synth gear is too cool not to include. Sadly, in early 2012 Ed passed out drunk with a lit cigarette and burned his studio down. That was a very bad day. Alcoholism is the worst. Same show, available light. 1/6th, handheld. Re-cropped 4:5, but otherwise unedited. That blue LED Doepfer Schaltwerk was the stuff of legend. Same gig. Ed lit up by my 20mW 532nm green 3 mirror lissajous laser. 1 second exposure. No idea what I used as a tripod. Ricardo, the guy who helped me finish my Saturnine mix in 2009. Seen here in April of '06, using my CDJ and mixer combination. I could NOT find that flight case when I moved. That's somewhat concerning as it's kind of huge. Half a second handheld, cropped 4:5. All of this is the tip of the iceberg. I've probably re-edited ~100 photos at this point. More later. - Yesterday
-
There are plenty of suitable candidates for the SiCFET. I count 9 different parts just by running a simple search on Digikey. Look for 1700V rated Vdss, IDmax less than 10A, Ciss less than 240pf, TO-247-3 package. I would prefer ones that are DC-SoA rated, with a moderate transconductance, low and stable Crss across the entire VDS range. Avoid those that are not characterized for linear operation. The vendor doesn’t want to guarantee those use case, and you will be on your own. I would try the onsemi NVHL1000N170M1 if I were to build another KGSSHV Carbon, although there are cheaper options that may be as good. The closest sub for LT1021 is the LT1236. As far as I know they only differ in long-term drift specs. There are other shunt mode 10V references but none come close to the noise performance of LT1021/LT1236. Of course you can also use second-hand, recycled ones. Those are cheap and already aged to perfection (in terms of long term drift).
-
He's done upgrades on things for years, including reasonable upgrades on the Ozark Trail hardtail a couple years ago. Started with intro: Then the Ozark Trail Ridge Pro Max Ultra... Studio:
-
C3M0350120D can be a substitution. 1200V instead of 1700V. Should be good in this role. Otherwise, the new 1700V next generation Sicfet will be released soon as Wolfspeed said will be in stock Q3 2025.
-
C2M1000170D produced by SUPSIC and Inchange Semiconductor. But don't know if they are reliable or not. PS: Is it possible to replace costly LT1021DIN8-10, something with Negative Shunt Reference (only 2 active pins)?
-
I think he was very honest about the goals and contributions from corporate donors - it's a project viewers wanted and we viewers are curious about the results, which are somewhat predictable. I'm sure the Walmart bike's (Ozark Trail Ridge) sales will spike as word spreads - I think a good value deserves to be shared around. A better frame, etc. would result in a better bike, but that is super obvious. 🚴‍♂️
-
{also a reminder that the February release - ARBORESQUE - is still in my queue}
-
Andymaxden joined the community
-
I've discovered that the C2M1000170D is now obsolete and currently out of stock on Mouser as well as several other distributor sites. Has anyone found a good alternative for output transistor for the Carbon? Thanks in advance.
-
Seth is fantastic; have been following him for SO long.
-
I'm not surprised this happened but it just makes me sad. They just don't give a shit and sell unsafe trash at extreme prices.
-
Megatron Electrostatic Headphone Amplifier
simmconn replied to kevin gilmore's topic in Do It Yourself
Ok, I stand corrected. The Megatron XL uses a 'hybrid' biasing scheme for the 300B. The grid is adjustable between 0 and 0.99% of B- ('fixed'-biasing), which cancels out less than 10% of the bias generated by the cathode resistor (self-biasing). The voltage between the cathode (K) and the grid (G) is the actual grid bias (Vgk), regardless of self-bias or fixed-bias. In a fixed bias setup, you’d measure between GND and G when K is grounded. -
-
If the output tube (like 300B) is self-biased, should I measure the voltage between the cathode (K) and the control grid (G1) to determine the actual grid bias (Vgk), and then adjust the trimmer resistor accordingly? I understand that in a fixed bias setup, you’d measure between GND and G1, but in a self-bias configuration, G1 might be at 0V and the cathode elevated — so the true bias would be relative to the cathode, right? Just want to make sure I'm adjusting based on the correct reference. Thanks in advance!
-
Megatron Electrostatic Headphone Amplifier
simmconn replied to kevin gilmore's topic in Do It Yourself
The Megatron final stage is CCS-loaded single-ended output working in class-A. There is no problem selecting operating point that way. However the final stage is self-biased. The grid bias eats up part of the B-, in other words B- is not equal to Eb in the tube datasheet. 20 to 30mA is more than enough for an estat amp. Since 300B has a low mu (2.85), which is about 1/3 to 1/4 of a triode-strapped EL34, the undistorted output voltage will be less than with EL34. But the DHT fame and the aesthetics probably more than compensate for that.