Versatile preamp
Hi,
I have been here for a long time, DIY Audio and this thread is just wonderful, I have learned a lot from some decent people, I have aslo learned that people can be very crude.
This is life in a nutshell, people can't stop themself to go too far insulting other people, maybe they are a bit jealous.
If I where John Curl I should go on and redesign the original JC-2 and make a vintage series probably with an external PSU and an open circuit design no potted modules, one HE height and 19" black aluminum enclosure with good electromechanical components, nice knobs and exact the same feature as the old one, tape monitor, riaa, and a lot of linear inputs and of course integrated headphone amplifier.
This product can serve as a high quality versatile premaplifier for sound recording studios, home two channel stereo, musicians and sound designers allround preamp.
A vintage JC-2 with a nice looking front panel, a rear with engraved serial number and a special edition wich may became a collectors choice.
Other features can be options and upgrades.
This product should be made in america, it can be realized if one can find a rational assembling technique.
A price tag around US$1500 and I would be one of the first to buy one, a special edition signed by JC.
This can only be done if you have very good reputation and skills like John Curl, an audio engineer with a strong trade mark all over the world.
Maybe the old power amplifier JC-3 can be redesigned as a small class A or AB amplifier.
Durable technical development, a product that can be repaired and last many, many years.
Of course should a product like this match the new era in all aspects like low energy consumption and followed by a complete manual, not a tiny paper consisting of a couple of sides, a complete instruction on how to use it and the specifications with real life measurement graphics and so on.
I have a JC-2 clone that I made around 1978 or so, I only use the linear amplifier part but now I will build a RIAA and put it in the same case a 19" enclosure, it is just peerless.
I'm 60 now so I will not wait too long.
Kind regards to John Curl and all decent audio engineers!
Kamskoma
Hi,
I have been here for a long time, DIY Audio and this thread is just wonderful, I have learned a lot from some decent people, I have aslo learned that people can be very crude.
This is life in a nutshell, people can't stop themself to go too far insulting other people, maybe they are a bit jealous.
If I where John Curl I should go on and redesign the original JC-2 and make a vintage series probably with an external PSU and an open circuit design no potted modules, one HE height and 19" black aluminum enclosure with good electromechanical components, nice knobs and exact the same feature as the old one, tape monitor, riaa, and a lot of linear inputs and of course integrated headphone amplifier.
This product can serve as a high quality versatile premaplifier for sound recording studios, home two channel stereo, musicians and sound designers allround preamp.
A vintage JC-2 with a nice looking front panel, a rear with engraved serial number and a special edition wich may became a collectors choice.
Other features can be options and upgrades.
This product should be made in america, it can be realized if one can find a rational assembling technique.
A price tag around US$1500 and I would be one of the first to buy one, a special edition signed by JC.
This can only be done if you have very good reputation and skills like John Curl, an audio engineer with a strong trade mark all over the world.
Maybe the old power amplifier JC-3 can be redesigned as a small class A or AB amplifier.
Durable technical development, a product that can be repaired and last many, many years.
Of course should a product like this match the new era in all aspects like low energy consumption and followed by a complete manual, not a tiny paper consisting of a couple of sides, a complete instruction on how to use it and the specifications with real life measurement graphics and so on.
I have a JC-2 clone that I made around 1978 or so, I only use the linear amplifier part but now I will build a RIAA and put it in the same case a 19" enclosure, it is just peerless.
I'm 60 now so I will not wait too long.
Kind regards to John Curl and all decent audio engineers!
Kamskoma
Surely you are joking! No, I realize that you think that your proposal is sound, but it isn't.
When the JC-2 was designed, the American dollar was worth much more, and the parts were more available. It would cost at least $3,000 for an equivalent product. We could just strip down the existing JC-2. However, the parts that made the Levinson JC-2 are not available, anymore than Toshiba fets, which have also become unavailable.
I have a Levinson JC-2, and it is an attractive package, but I don't use it for anything, anymore.
It is a good design, that is technically obsolete.
However, if you want what the Levinson JC-2 offers, and can't afford a used one, you might look for the PLD-1100 or PLD-1500 on the used market.
When the JC-2 was designed, the American dollar was worth much more, and the parts were more available. It would cost at least $3,000 for an equivalent product. We could just strip down the existing JC-2. However, the parts that made the Levinson JC-2 are not available, anymore than Toshiba fets, which have also become unavailable.
I have a Levinson JC-2, and it is an attractive package, but I don't use it for anything, anymore.
It is a good design, that is technically obsolete.
However, if you want what the Levinson JC-2 offers, and can't afford a used one, you might look for the PLD-1100 or PLD-1500 on the used market.
Times fly
No I'm serious!
Times fly and it is a pity that you can't do this, it would be a nice product to own, and a lot of easy money for you.
Maybe you should see far beyond the square box and realize facts people would like for a product like I sketch up.
It is a paradigm change going on and esoteric high end hifi has lesser buyers.
The most quality minded people can stay with good designs but not the mainstream sound products.
It's a sort of Henry Kloss project but with durable high tech development and services.
Make a smart deal with some european pcb manufacturer and enclosure manufacturer and use the exsisting jfet products.
Kamskoma
No I'm serious!
Times fly and it is a pity that you can't do this, it would be a nice product to own, and a lot of easy money for you.
Maybe you should see far beyond the square box and realize facts people would like for a product like I sketch up.
It is a paradigm change going on and esoteric high end hifi has lesser buyers.
The most quality minded people can stay with good designs but not the mainstream sound products.
It's a sort of Henry Kloss project but with durable high tech development and services.
Make a smart deal with some european pcb manufacturer and enclosure manufacturer and use the exsisting jfet products.
Kamskoma
Maybe i should pack my cash and retire at your place.
The JC-2 is manufactured in Asia and still does $6000 on this continent, ever heard of taxes ?
Assembled in the US or Eurotten would likely make it jump the 10K hurdle, even without your SE signature and outboard power supply.
Mr Curl just whispered how much higher the cost of essential semiconductors has become.
You probably forgot a digit and meant to write $15,000.-
The JC-2 is manufactured in Asia and still does $6000 on this continent, ever heard of taxes ?
Assembled in the US or Eurotten would likely make it jump the 10K hurdle, even without your SE signature and outboard power supply.
Mr Curl just whispered how much higher the cost of essential semiconductors has become.
You probably forgot a digit and meant to write $15,000.-
We 'could' make a JC-2 in mainland China for an asking price of maybe $2,000. We HAVE to make it for 1/4 the dealer price. Please keep that in mind. Mark used to pay skilled people $4-5/hr. I now pay $25/hour for the same skills.
Well, it's a pity that Toshiba don't have the semiconductors needed for a project like this.
It seems that sound engineers has gone to SMD chips and high integrated devices, they don't mind all problems that will appear with the sound quality.
Well, I can build some JC-2 for my own usage, I still have a lot of Siliconix components left.
Is it really shure that no other JFET products can match Toshiba?
Kamskoma😎
It seems that sound engineers has gone to SMD chips and high integrated devices, they don't mind all problems that will appear with the sound quality.
Well, I can build some JC-2 for my own usage, I still have a lot of Siliconix components left.
Is it really shure that no other JFET products can match Toshiba?
Kamskoma😎
Better keep higher price and higher quality. Pushing down prices and expenditures at the expense of quality is not any good.
Quality
I see, I work on a 16 Ch sound mixer designed in UK, made in China, I must say that it is a journey back to the 80's, it has no special components just ordinary mainstream components, ordinary glass fiber PCB and cheap sockets, cheap pot's, cheap IC's and cheap of all things but yet kind of good work with the enclosure.
Solderings is rather nice and so on, this mixer has yet still a lot of intermittent problems.
Maybe some other country in this world has labor for peanuts, I think that the bottom is reached.
My thoughts was, if there is some new technology for assembling electronics a kind of automated high tech process, beyond the square box of thinking.
Kamskoma
I see, I work on a 16 Ch sound mixer designed in UK, made in China, I must say that it is a journey back to the 80's, it has no special components just ordinary mainstream components, ordinary glass fiber PCB and cheap sockets, cheap pot's, cheap IC's and cheap of all things but yet kind of good work with the enclosure.
Solderings is rather nice and so on, this mixer has yet still a lot of intermittent problems.
Maybe some other country in this world has labor for peanuts, I think that the bottom is reached.
My thoughts was, if there is some new technology for assembling electronics a kind of automated high tech process, beyond the square box of thinking.
Kamskoma
One thing is that Tel Aviv Philharmonic Concert Hall has good acoustics.
Second, I have annual subscription with tickets in almost ideal location in the hall (expansive ones).
Third is that in live concert my listening ignores most side noises.
Both of us agree that it's a blessing to be able to enjoy music, both at home and in live concerts.
The same problem was with Japan before 1960, I hope China to get more quality and thus higher prices. BUT, there is one big difference, which I am afraid of.
PMA said:
Indeed.
Spending some time in various European countries, USA and other countries, classical music concerts dress code in Israel is closer to Europe than USA.
Israeli overall culture is very unique mix of various aspects, including East and West, also including a mix of some extreme values. Part of it is because Israeli population is far from being homogenous.
PMA said:
Agreed.
The market is flooded with low level and mediocre level low cost equipment, along with over priced mediocre equipment.
Jacco "Maybe i should pack my cash and retire at your place" why so inflamed Jacco.
I thought this forum was friendly and full of creative people and also that one could discuss in a decent way.
Do you have some problem with my contribution, if so I will leave at once, I will not hurt you.
Kamskoma
I thought this forum was friendly and full of creative people and also that one could discuss in a decent way.
Do you have some problem with my contribution, if so I will leave at once, I will not hurt you.
Kamskoma
kamskoma said:
It's not as bad as it looks like. It is a lot of friendly people here.
Stinius
What is high quality?
Just wonder what is high quality, a high tech cell phone like Nokia or a 50" TV set from LG , a BeO TV set and/or a repeter station for GPRS/GSM.
A military radio GTRS or an old Luxor tv set that has been in duty eight hours a day in 7 years without any problem, not even a burned PCB in HT or SOPS.
An old Telefunken Bajazzo Sport still working or an old Graetz radio made in the 50's still working or a Henry Kloss Tivoli two years not working, no schematics no spares.
Quality maybe is what we expect from a product, real nice sound for US$10000 or more for a period of 5 to 10 years, after this, end of services and no spares.
Or just buy, use and throw away when it is out of warranty, buy a new product and so on.
No one bite on my baite durable development, what can we do to make products last longer and with minimal pollution.
Kamskoma
Just wonder what is high quality, a high tech cell phone like Nokia or a 50" TV set from LG , a BeO TV set and/or a repeter station for GPRS/GSM.
A military radio GTRS or an old Luxor tv set that has been in duty eight hours a day in 7 years without any problem, not even a burned PCB in HT or SOPS.
An old Telefunken Bajazzo Sport still working or an old Graetz radio made in the 50's still working or a Henry Kloss Tivoli two years not working, no schematics no spares.
Quality maybe is what we expect from a product, real nice sound for US$10000 or more for a period of 5 to 10 years, after this, end of services and no spares.
Or just buy, use and throw away when it is out of warranty, buy a new product and so on.
No one bite on my baite durable development, what can we do to make products last longer and with minimal pollution.
Kamskoma
You have I Bajazzo? I also have a Bajazzo. I play it every day. I have had problems with other Bajazzo's over the decades. Hard to find parts, but I have the schematics. GREAT portable/table radio! Partially designed by Dick Sequerra in the '50's.
Manufacturer
How many of all folks here are manufacturer, and what's the trade name of the products.
How many of them can say that they have high quality, durable development.
Perhaps it no longer exists such products in audio technology with exception of a hand full of producers like JC, Nelson Pass, Krell, Mark Levinson and Audio Research.
Ok! there are some more, can't remember all of them, but the list is very short.
How many of the american manufacturer produce in China and how many of them use BJT's.
Someone told that he should produce in China when Ferrari make their motors there.
Kamskoma
How many of all folks here are manufacturer, and what's the trade name of the products.
How many of them can say that they have high quality, durable development.
Perhaps it no longer exists such products in audio technology with exception of a hand full of producers like JC, Nelson Pass, Krell, Mark Levinson and Audio Research.
Ok! there are some more, can't remember all of them, but the list is very short.
How many of the american manufacturer produce in China and how many of them use BJT's.
Someone told that he should produce in China when Ferrari make their motors there.
Kamskoma
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