Offhand, no, sorry.
I'd have to weed through my database for hours, but since my sister has had 2 strokes and heart problems, it's keeping me very busy.
Safe to say, if Technics used that for so many years and in so many models, and has the reputation that they're famous for, why question it?
Thanks.
But she's now 66, and in generally poor health these days, and on SS disability.
At 68, I'm in better shape thank god.
Her first stroke was in 1991, (brain aneurysm) we almost lost her back then.
That was brought on by years of physical abuse by her husband, now ex.
The creep would bang her head against the wall when he got drunk.
Her 2nd stroke was in 2019, brought on by the death of her old boyfriend, who became her close companion after her divorce.
She's had a heart monitor implanted, takes a whole shelf of perscription drugs, and they made her fat overweight now.
She gets around though, not much, she naps a lot, and has needs.
I do my best to help her out, but her life is tough.
Look for the Kenwood KX-A36 manual on line, it has a nice circuit on a small PCB, and the foil side is also there.
Good wishes for your sister, but at times there is relief at conclusion.
A friend once said he preferred to die immediately of a heart attack rather than a lingering one by cancer.
When you have to go, and you will, best tidy things up.
It may sound cruel, but I am 56, and I have seen sudden and lingering deaths among my family and friends circle.
Cancer patients suffering through years of treatments, and needing constant physical support, sometimes I wonder what they did that it all came back to them.
It is draining, mentally, physically and financially.
A friend once said he preferred to die immediately of a heart attack rather than a lingering one by cancer.
When you have to go, and you will, best tidy things up.
It may sound cruel, but I am 56, and I have seen sudden and lingering deaths among my family and friends circle.
Cancer patients suffering through years of treatments, and needing constant physical support, sometimes I wonder what they did that it all came back to them.
It is draining, mentally, physically and financially.
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Ok,i'll be easy on you this time 🙂 Technics's well known high end stuff had j-fet input, cascodes...etc in their phono preamps.Other than that each audio brand had its own "fairly good" preamps for the masses and some originate in early Hitachi op-amp footnotes other in miuPC or Mitsubishi op-amps footnotes , but none of the later incarnations based on op-amps could reach the original specs of a let's say HA12017 or other simillar products of the era due to the max power supply :HA12017 pdf, HA12017 description, HA12017 datasheets, HA12017 view ::: ALLDATASHEET :::. The usual downside of modern op-amp with mm phono preamp is max input signal voltage before hard clipping on dusty records...It's probably the 20th time i say it on various phono preamp topics and it's a real problem unless you are used to clean your record before every single time you play it...No old op-amp will deliver the clean sound of a opa2228 while no modern op-amp will deliver you a listenable sesion on a record unless you're living inside a NASA hyperbaric clean room...or just listening through a digital noise remover setup...
wiseoldtech :
It is very hard what you say, but I see that you have a lot of mental strength, continue like this and do not loosen. Beware.
It is very hard what you say, but I see that you have a lot of mental strength, continue like this and do not loosen. Beware.
I would need something that simple but for MC, I will be grateful if someone can attach something ....🙂
Oh yes indeed, I will agree with you on me having "mental strength".
While being human, we all have some faults or weaknesses since I believe that no one is perfect.
However, in my case I tend to have a strong sense of focusing and being proactive on situations and figuring out the best, sensible approach to remedy or avert a problem.
Attachments
On my Kenwood manual, AN6556 and M5218P are shown as interchangeable, on 14V rails.
In the extra phono pre section.
If it helps...
In the extra phono pre section.
If it helps...
It's nice to know that there is a replacement for the IC, thanks.
In a circuit of such sensitivity as the MC phono, the wiring and distribution of components is critical, so we return to the problem of the PCB layout, I see too many components there.
I bet that this Technics oldie phono preamp sounds nice.
If I would building new phono preamp now, I would build copy of phono from Kenwood KA 3020 SE, it is almost usual opamp based phono with NJM4580DD (that second D is unobtainable, but I think is impotant...).
Important part of that Kenwood preamp is a dedicated power supply regulator, with opamp as error amplifier.
That power supply is more complicated than phono pre alone.
If I would building new phono preamp now, I would build copy of phono from Kenwood KA 3020 SE, it is almost usual opamp based phono with NJM4580DD (that second D is unobtainable, but I think is impotant...).
Important part of that Kenwood preamp is a dedicated power supply regulator, with opamp as error amplifier.
That power supply is more complicated than phono pre alone.
Here's a pre for MC with only two TRs, PCBs, everything!
The author is a "war veteran" of the valves, however.....🙂
Informacion electronica.: Un preamplificador para capsula de bobina movil.
The author is a "war veteran" of the valves, however.....🙂
Informacion electronica.: Un preamplificador para capsula de bobina movil.