luvdunhill
-
Posts
13,630 -
Joined
-
Last visited
-
Days Won
34
Content Type
Profiles
Forums
Events
Posts posted by luvdunhill
-
-
3 hours ago, Craig Sawyers said:
Indeed. The combination of noise voltage and current was ideally matched to the resistance/inductance characteristics of a moving magnet cartridge. And lots of commercial designs used the NE5534.
I have a spreadsheet that calculates S/N ratio with RIAA. AT 5mV the NE5534A returns 77.9dB with a typical MM cartridge of 610 ohms and 0.47H. The nearest equivalent IC is the much more recent OPA1611/12. Lower voltage noise but critically higher current noise. That gives 75.3dB, so 2.6dB worse s/n.
My spreadsheet does not take account of 1/f noise. The OPA1611 has much better performance here than the NE5534A, so some of the 2.6dB will be eroded by that effect and it will make the comparison a closer run thing.
Discrete opamps can give lower noise for RIAA EQ, and indeed Sam Groner developed a discrete version of the NE5534A that was better performance all round https://groupdiy.com/threads/just-for-fun-discrete-ne5534.57544/ . No surprise that the low noise dual he specified in 2004 is obsolete though.
Cool - how would it compare to the LME49870, as that’s what I used many moons ago when I built mine… it plays the music for sure.
-
15 minutes ago, swt61 said:
I have seen that one before. The individual boards make more sense to me, as you can adjust for the number of players. And it's easier to store. I had a custom leather bag made to hold my set. And my Mom's old set fits in there perfect, as all my boards are the exact same size.
Al's Sister wants my own previous set. She probably wants to practice to be able to beat me!
Super cool! Yeah it’s all about the 8’s and 9’s (well and the Jokers).
-
1
-
-
-
I suppose there is
-
Well, this exists now:
https://www.minidsp.com/products/minidsp-in-a-box/flex-ht
I never thought I'd go back to HT separates ... but maybe. Thoughts?
-
3 minutes ago, naamanf said:
Might try Folgers with a Chemex.
The flavor crystals will clog the filter
-
On 11/11/2023 at 9:23 AM, Aura said:
what beans (origin and roast level) are you using? most anything African or a higher level of fines is gonna slow it down. do not swirl the bed during bloom, origami will choke up just like V60 if you stir up your fines too much.
i use either Kalita wave (185 or 155) for flat filter or Cafec Abaca (red pack) for cone filter. Cafec is a very confusing brand and i don't know if the ones you are using are a culprit for slower draw. i started with these red abaca and won't switch as long as they are available. they draw fast and are well made.
Ethiopian. I will try the Kalita Wave 155 and see how that goes.
-
@Aura can you tell me more about your origami setup? I am using the max coarse grind on the niche and caftec 4 filters and I can’t get the brewing time fast enough.
-
On 10/24/2023 at 4:15 PM, Grahame said:
This sort of scary? https://appleinsider.com/articles/23/10/25/ileakage-attack-resurrects-spectre-with-password-and-website-data-extraction/amp/
-
Ah yes, that annoying Cornershop lyric.. thanks all, I guess another year has come and gone!
-
1
-
-
8 minutes ago, TMoney said:
What is the ping like?
32 ms in that example which is the lower limit of what they advertise… I also have a WISP (Rise) and that’s much lower.. about half that amount.
I get around 500 mbps with AT&T in Austin City Limits and about the same with Spectrum.
-
-
47 minutes ago, naamanf said:
Going to need a sample to verify their authenticity.
Have you seen prices lately? I mean, i made the right call to make a lifetime buy a while back..
-
1
-
-
-
Not sure if anyone has used this stuff to touch up the inevitable scratch during DIY or perhaps to infill, but it seems to work pretty well! No before pictures from all the loading port area, but a tough area on the top where there is a matte finish..
-
2
-
-
Wow, hopefully 10mi is far enough!
-
1
-
-
-
-
I think that is basically a vape cartridge… how does it ping and pong then?
-
2
-
-
21 hours ago, Grahame said:
Two different meat free salads
🥗🥭🍋🍚
What are your personal thoughts on aspartame, now that the FDA is getting comfortable with the WHO and the EU’s positions?
-
Very nice! I am playing around with a floor finishing product by Pallmann - for things other than floors. It seems to finish them.
-
1 hour ago, tyrion said:
The good drugs was the one thing that made dental procedures worthwhile. There is the keeping your teeth thing but still, no drugs sucks. Feel better.
Back surgery might be your next level then… I don’t see what all the hubbub is about fentanyl…
-
1
-
2
-
-
Yeah I have some naval jelly I could use.. I just am a bit surprised to see it I guess.
-
Is there something I can use to ward off a but of oxidation? I am surprised to see rust here I guess.
Part Sourcing Assistance/Advice Thread
in Do It Yourself
Posted
Is that SNR after/including the RIAA EQ?
I suppose you can parallel the NE5534A as well…