The last preamplifier
Just a reflection on audio electronics, I can understand that it is almost unpossible to design and build a real good sounding preamplifier.
You can't use any component that are made from magnetic material.
No capacitors or transformers can be used in the signal path.
Only JFET from Toshiba is the optimum and they don't make any JFET semiconductors for state of the art audio.
So how can we make a real good amplifier, can we find other components that are useable for high tech audio, and if so where?
Maybe it is the dead end street for the DIY people, only the audio industry can make SOTA audio electronics.
John Curl's advanced circuits maybe can be turned to thick film "integrated circuits" made only for audio maybe some company can take this as a hint.
Kamskoma
Just a reflection on audio electronics, I can understand that it is almost unpossible to design and build a real good sounding preamplifier.
You can't use any component that are made from magnetic material.
No capacitors or transformers can be used in the signal path.
Only JFET from Toshiba is the optimum and they don't make any JFET semiconductors for state of the art audio.
So how can we make a real good amplifier, can we find other components that are useable for high tech audio, and if so where?
Maybe it is the dead end street for the DIY people, only the audio industry can make SOTA audio electronics.
John Curl's advanced circuits maybe can be turned to thick film "integrated circuits" made only for audio maybe some company can take this as a hint.
Kamskoma
BS
Somebody suggest me to ask the manufacturer out there!
"Maybe you need to ask those people that make those real good sounding preamps out there?"
Ok, so they may use not so good devices and makes the best of these "second best semiconductors" so to say.
A SOTA preamplifier consists of JFET transistors and some high grade resistors, maybe a servo as cream.
Even if this special thread is a SOTA expert forum, one can expect some indulgence from the so called SOTA experts, I don't think that this forum is a place for top secret audio electronics if it is why bother to answer.
Somebody suggest me to ask the manufacturer out there!
"Maybe you need to ask those people that make those real good sounding preamps out there?"
Ok, so they may use not so good devices and makes the best of these "second best semiconductors" so to say.
A SOTA preamplifier consists of JFET transistors and some high grade resistors, maybe a servo as cream.
Even if this special thread is a SOTA expert forum, one can expect some indulgence from the so called SOTA experts, I don't think that this forum is a place for top secret audio electronics if it is why bother to answer.
I think the newer crop of great parts will be surface mount. They already supply matched NPN and PNP parts. These are fantastic for some things I do.
I guess it's time to start looking at these surface mount parts.
BTW, I'm not sold on this magnetic stuff. I have a hard time believing that a constant magnetic field is going to cause any grief, otherwise we are all in trouble.
Time to break out the pyramids and align them to the Earth's field (which wanders occasionally).
Hi John,
Back onto the topic of your designs then. Have you considered any new parts that will deliver the performance you need? I do expect that you could build a top flight preamp with current production parts.
-Chris
I guess it's time to start looking at these surface mount parts.
BTW, I'm not sold on this magnetic stuff. I have a hard time believing that a constant magnetic field is going to cause any grief, otherwise we are all in trouble.
Time to break out the pyramids and align them to the Earth's field (which wanders occasionally).
Hi John,
Back onto the topic of your designs then. Have you considered any new parts that will deliver the performance you need? I do expect that you could build a top flight preamp with current production parts.
-Chris
Re: BS
Sorry, I was serious. You question whether it is still possible to build SOTA preamps. There are SOTA preamps on the market. So naturally, their manufacturers have the answers. As John said, good designers can still build SOTA preamps.
Edit: I mean by SOTA in this context, preamps with sound the very best of class, worldwide.
Jan Didden
kamskoma said:
Sorry, I was serious. You question whether it is still possible to build SOTA preamps. There are SOTA preamps on the market. So naturally, their manufacturers have the answers. As John said, good designers can still build SOTA preamps.
Edit: I mean by SOTA in this context, preamps with sound the very best of class, worldwide.
Jan Didden
Hi John,
I hope it isn't very serious, take it easy and rest some.
I have a friend of long acquaintance who is losing his sight. The lining is degenerating and there is not much that can be done. What he has lost so far is gone, and that is at the center of his vision.
Best to you John and I wish you a speedy recovery.
-Chris
I hope it isn't very serious, take it easy and rest some.
I have a friend of long acquaintance who is losing his sight. The lining is degenerating and there is not much that can be done. What he has lost so far is gone, and that is at the center of his vision.
Best to you John and I wish you a speedy recovery.
-Chris
I am sure Mr.Curl will be back with a vengence soon................if only he would listen to his doctor.
Most of you seem to miss him when he not here so maybe we need to cut him some slack when he returns...............
Speedy recovery Mr.Curl no more bumper car rides for a few weeks!
Jam
Most of you seem to miss him when he not here so maybe we need to cut him some slack when he returns...............
Speedy recovery Mr.Curl no more bumper car rides for a few weeks!
Jam
Hi John,
Responding to each "get well" is not expected. There are simply too many for one. Besides, all anyone needs to know is that you read them, and they (hopefully) cheered you up some.
Time to take out some paper and pencil. Explore newer ideas and "what if's".
Hi Jam,
-Chris
Responding to each "get well" is not expected. There are simply too many for one. Besides, all anyone needs to know is that you read them, and they (hopefully) cheered you up some.
Time to take out some paper and pencil. Explore newer ideas and "what if's".
Hi Jam,
Of course we do miss him when he isn't posting. Conversations are two way, and so are reactions.
-Chris
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