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Old 20th September 2009, 04:51 PM   #11
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Default Me too!

Count me on on a healthy number! This could be a one off deal so I think this GB will be well subscribed.

RC
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Old 20th September 2009, 05:16 PM   #12
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Default balanced J2 with LU1014D?

Will a J2 made with LU1014D have similiar performance?
Does LU1014D have any other disadvantage (higher distortion), other than having a low 24V voltage tolerance.
We can run the LU1014D at +/-12V.
Assuming the output goes to +/-10V, with balance amp we can get:
50W into 4ohm
25W into 8ohm
That should be more than sufficient for a non-mono-block class A for many of use.
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Old 20th September 2009, 05:19 PM   #13
Magura is offline Magura  Denmark
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Quote:
Originally Posted by zhoufang View Post
Will a J2 made with LU1014D have similiar performance?
Does LU1014D have any other disadvantage (higher distortion), other than having a low 24V voltage tolerance.
We can run the LU1014D at +/-12V.
Assuming the output goes to +/-10V, with balance amp we can get:
50W into 4ohm
25W into 8ohm
That should be more than sufficient for a non-mono-block class A for many of use.
Been there myself.

You run into the wattage limitation of the LU.


Magura
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Old 20th September 2009, 05:25 PM   #14
masag1 is offline masag1  Germany
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yes thats good news. Count on me too for the GB.

With kind regards

Sam
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Old 20th September 2009, 05:31 PM   #15
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Quote:
Originally Posted by Magura View Post
Been there myself.

You run into the wattage limitation of the LU.


Magura
What if we place 3-6 device in parallel in place of each Si-C Jfet?
That should be able to reduce the heat from each device to below 10w
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Old 20th September 2009, 05:41 PM   #16
Magura is offline Magura  Denmark
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Quote:
Originally Posted by zhoufang View Post
What if we place 3-6 device in parallel in place of each Si-C Jfet?
That should be able to reduce the heat from each device to below 10w
I tried that, but they are not sharing well. I have a test setup where this was supposed to bring some fun.
No fun so far, just blown devices.


Magura
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Old 20th September 2009, 05:41 PM   #17
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Quote:
Originally Posted by Magura View Post
How do we get our hands on a few of those Semisouth JFET's
You get in line behind me.

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Old 20th September 2009, 05:42 PM   #18
Magura is offline Magura  Denmark
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Quote:
Originally Posted by Nelson Pass View Post
You get in line behind me.

Depends how much threats and crying you've displayed


Magura
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Old 20th September 2009, 05:45 PM   #19
Tea-Bag is offline Tea-Bag  United States
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ya think the likes of Mouser and Digi-Key will carry these soon enough?

I dont see why not.

The real question is, will Nelson reveal a DIY version of this beast in short or long haul.

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Old 20th September 2009, 05:56 PM   #20
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I've been clear on this - the schematics of the J2 will be
released when production ceases. I'm tired of the
commercial clones using my trademarks, claiming to be
accurate reproductions.

In the meantime, you should have enough smarts to cobble
together your own versions based on the simplified
schematics. Much more fun that way.

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