The distortion was about your reference to reed relays being used for T&M.
You can certainly run your own tests. Use a 1K/1 ohm divider to pass an 18k & 20k signal of 300 uV into a test switch that is bypassed by a soldered jumper wire. Look at the FFT of the output with a load preferably of 100,000 ohms but at least 10,000 ohms including the test gear input burden. Use enough averages to get the noise down. The repeat the same test after cutting the jumper wire. Important to start with the jumper in place before powering up the gear.
> I was remembering posts from years ago about metallic junctions going
> from zero conductivity (open) to some finite resistance at say 10's of mV.
> This is what I want to see.
I think it's when the contacts are close enough (yet not touching) that even
the low (signal) voltage induces arching.
On more than one occasion I have thought (due to LOUD static) I had a gross
circuit problem, only to find it to be a slightly loose RCA connection.
> from zero conductivity (open) to some finite resistance at say 10's of mV.
> This is what I want to see.
I think it's when the contacts are close enough (yet not touching) that even
the low (signal) voltage induces arching.
On more than one occasion I have thought (due to LOUD static) I had a gross
circuit problem, only to find it to be a slightly loose RCA connection.
No see Pashen's law...
Orders of magnitude off, arcing has absolutely nothing to do with the behavior of bad or dirty contacts that make or break with mechanical agitation.
You can easily reduce pixels with aproprirate program and show as those photos.
Who's future? Only a few people I know are predominately using digital anything.
Signs you may be living in a bubble...
Most younger folks seem to listen to music on their phones or PCs these days, that's digital.
Really that is interesting, you would have to carefully cultivate your circle of friends for that to be true these days. Right now I am working to eliminate my T amp so I will have an all analog open loop no feedback signal path from phono cart to headphones just to see what I get.
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Young people I know who do digital (I know more older people in audio circles) are interested in vinyl, but don't have the economic means necessarily to engage much. A few of them have itty bitty collections anyways, because they love certain bands so much that they'll collect their vinyl.
What kind of amp are you going to make Scott? I have this and it's pretty nice for headphones. It does need to warm up for around a half hour. It was given to me by someone, and so far it seems not overly tubish so timbre isn't one noted so badly. But I still need to put in a DACT volume for it instead of the pot.
What kind of amp are you going to make Scott? I have this and it's pretty nice for headphones. It does need to warm up for around a half hour. It was given to me by someone, and so far it seems not overly tubish so timbre isn't one noted so badly. But I still need to put in a DACT volume for it instead of the pot.
Some thing similar to Nelson's M2, nothing but unity gain impedance conversion and transformer based voltage gain.
For those who might not know, Nelson Pass's M2 amplifier design has no feedback at frequencies above 0.03 Hertz. Below that, M2 actually has enormous great gobs of feedback including a BJT common-emitter amplifier with an effective 23Kohm collector load. But people tend to disregard the bias servo just because it operates in the infrasonic regime.
Kalista DreamPlay One CD player | Stereophile.com as it's Friday. $43,000, only plays redbook CDs and doesn't seem to do that any better than a cheap marantz. But of course the reviewer loved it!
A carefully cultivated group of friends.
(I.e. mostly people who just recently moved here as well)
It can't do L-R to M-S conversion and I need twiddly knobs for adjusting. The pragmatic approach would be to do the conversion in analog and feed through a DEQ2496 , but that's extra conversion stages and the UI on the DEQ isn't great. I fear once again I am in a group of one in my requirements.
Yup, that is the cheapy version!
Yup, that is the cheapy version!
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