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Old 26th September 2004, 05:59 AM   #21
dimitri is offline dimitri  United States
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‘Pooging Mark Levinson’s JC-2: Five Cheap Tweaks to Sonic Bliss!’, by Charles Hollander & John Curl, PF, Volume 8, Number 1

Back issues are available for $7. Email with your order lritsema@positive-feedback.com
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Old 29th September 2004, 06:56 PM   #22
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Default Positive Feedback

I tried to get in touch with my former distributor of an execellent audio magazine trying to get this back issue with the preamp upgrade, but.. no positive feedback was delivered.
So can anybody post this article to me I would be very happy my address is balldanger@hotmail.com.

Thank you

GLHA
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Old 29th September 2004, 07:06 PM   #23
mikeks is offline mikeks  United Kingdom
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From http://diyaudio.com/forums/showthrea...702#post115702

Quote:
Originally posted by halojoy
Thanks, I will see what he thinks.

I know I have been on that website once before.
Probably some year ago.
I recognize some of the names of the amplifiers.

Thius is some of what he, Kostas Metaxas AUS, has to say:

The most significant difference between VALVE and TRANSISTOR circuits is the amplifier/power supply regulator circuit interaction which is far more critical in Transistor circuits.
In well designed Tube or transistor circuits, the ac gain will have nothing to do with the value of the supply rails.....easily demonstrated by using an active load....

Kostas' example is soooo flawed it beggers belief....

I suppose it goes to show you really don't need to know what you are doing to be succesful in the audio industry.....
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Old 29th September 2004, 09:36 PM   #24
zinsula is offline zinsula  Switzerland
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Default Continuing John Curl bashing?

Did you HEAR this amp? Can you tell from that schematic that it doesn't sound good?


Tino


Edit: Where is mikeks post about the schematics gone? My point doesn't seem to make sense now.....moderators??
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Old 29th September 2004, 10:21 PM   #25
mikeks is offline mikeks  United Kingdom
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Default Re: Continuing John Curl bashing?

Quote:
Originally posted by zinsula
My point doesn't seem to make sense ...
I agree....
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Old 28th January 2009, 02:39 AM   #26
HKC is offline HKC  Hong Kong
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After 5 years, I eventually finished my JC-2 clone. The sonic quality of my JC-2 is amazing. About 10 of my friends have listened to the pre-amp and they all give very positive comments to it.
I want to say thank you to you guys who gave suggestions and advices here.

Top view of the pre-amp:
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Old 28th January 2009, 01:23 PM   #27
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maybe put this post over on the Blowtorch thread?

John Curl's Blowtorch preamplifier

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Old 29th January 2009, 01:21 AM   #28
HKC is offline HKC  Hong Kong
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Quote:
Originally posted by bear
maybe put this post over on the Blowtorch thread?

John Curl's Blowtorch preamplifier

_-_-bear

Hi bear

Good idea, here you go:

http://www.diyaudio.com/forums/showt...92#post1727692
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Old 29th January 2009, 02:55 PM   #29
HKC is offline HKC  Hong Kong
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My next action is to build the phono section of JC-2. Here below is the original schematic:
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Old 29th January 2009, 02:58 PM   #30
HKC is offline HKC  Hong Kong
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And my pcb layout, board size 2 1/4" x 2":
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