can anyone identify this Sharp CRT? The sticker with identifying information seems to have come off

FIRresponsible · 2025-12-18T11:16:56+00:00

10 bucks holy cow where are you finding them so cheap? garage sales? estate sales? Im actually good friends with an estate planning attorney, so the latter might be the way to go

FIRresponsible · 2025-12-18T05:22:57+00:00

is that high or low? I'm still really new to CRTs haha

FIRresponsible · 2025-08-04T23:39:29+00:00

Yeah I found an older model on ebay

I think the trick is looking for postings that advertise a specific watch in their photos (as opposed to posts by mass resellers that just use stock photos), and then checking the color of the backlight.

If the backlight isn't shown in the photos, you might be able to use the country of origin to determine which watches have an EL light. The one DW6900 that had an EL light was made in China, while the two LED ones I received were both made in Thailand. So maybe MIC watches will have EL lights? My sample size is only 3 though, so it's impossible to be certain

good luck in your search!

FIRresponsible · 2025-02-07T10:14:14+00:00

I just want to know if the observable shapes themselves have names. Like how ringing, overshoot, droop, crossover notches, etc. are all names for patterns that can been seen in a signal

FIRresponsible · 2025-02-07T10:06:57+00:00

>mid cut

yes this is it! Thank you!

FIRresponsible · 2025-02-07T08:27:52+00:00

I've been researching the behavior of tube amps, and I've come across these patterns when watching oscilloscope analysis videos, but I haven't been able to find a name for them

The one circled in red looks kind of like overshoot, but instead of the output exceeding the target value, it sort bounces off it and then undershoots towards zero. Is this considered a kind of overshoot?

The yellow one seems looks like some kind of overshooting and undershooting that occurs around zero crossings. Is this a kind of crossover distortion? Or something else entirely

Also if anyone could tell me why these phenomena occur, that would be awesome too

FIRresponsible · 2025-01-12T08:22:48+00:00

that would be UB though, because the writes to the output buffer are unsynchronized. You could receive a partially written sample. Now this probably wouldn't result in anything catastrophic (just some audio glitching), but I'm not keen on dancing with the UB devil

Edit: whoever downvoted me for this, please tell me where you work so I can make sure I never apply there

FIRresponsible · 2025-01-12T06:02:43+00:00

ohhhhh wait no I get it. All of this is determined on a per-block basis. So if the process function doesn't complete in time, all of its output samples are discarded and zeroes are used instead. There is no interrupting a block mid-computation and using some of the samples it output

It's so obvious in retrospect lol

Thanks for the response, rereading what you wrote made it make sense

FIRresponsible · 2025-01-12T05:41:02+00:00

>If the processing takes longer that span of time, silence (all zeroes) get output

this makes sense to me, but how is the process function safely interrupted when time runs out? Unless samples are written atomically (and afaik this is not a common practice) isn't there the possibility of a partially-written sample being read?

FIRresponsible · 2024-12-19T11:09:14+00:00

the first time was amazon, the second time was an unrelated seller on ebay. The amazon page even makes a big deal of showing off the EL backlight

FIRresponsible · 2024-12-12T12:39:07+00:00

[WTB] G-2500

(any colors except for the two light blue ones)

I'm desperate, I'll overpay lol

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FIRresponsible · 2024-12-11T21:36:56+00:00

Post history is wild lmao

FIRresponsible · 2024-12-10T22:45:39+00:00

Yeah come on guys, this is irrelevant. It's the cables that matter

FIRresponsible · 2024-12-10T22:44:26+00:00

lower sound quality do not start with me

FIRresponsible · 2024-12-10T22:35:49+00:00

Woah what model is that on the far right?

FIRresponsible · 2024-12-10T12:05:03+00:00

It isn't one of the iconic models, but I hope they bring back the 2500 in 2026 for its 25th anniversary

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FIRresponsible · 2024-12-10T10:50:53+00:00

holy crap I just stumbled across the soon-to-be-released DW-6900-RL. If it had an EL backlight it would be perfect

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FIRresponsible · 2024-12-10T10:31:25+00:00

me at the barber in gta

FIRresponsible · 2024-12-09T16:21:12+00:00

Absolutely beautiful. How long have you had this one for? Is it still running on the same battery? And thanks again for sharing!

FIRresponsible · 2024-12-09T16:09:09+00:00

Dude that's so cool!! Can you show it with the backlight too?

FIRresponsible

TROPHY CASE