Aleph J Schematic

[Nelson Pass]

Re: All that distortion makes you think...

Hurray I can keep building amps and feel I get something new every time!!!!

That's the best part.

 

[Luke]

Hi Carpenter,

what is the purpose of cascoding the lu1014d jfet in the aleph J circuit?

 

[carpenter]

Hi Carpenter,

what is the purpose of cascoding the lu1014d jfet in the aleph J circuit?

To have a jfet output with more power?

 

[Luke]

But its not a jfet output, its still an irdf240 output isnt it? Wouldnt it be easier to replace the IRFP240 with LU1014D?

 

[carpenter]

It's a cascode; in theory, the jfet controls the sonic signature.

 

[Luke]

Ah I see, thanks for that. Is it the case in practice or have you not built it yet?

 

[carpenter]

It was more of a mental exercise and a chance to chat with the boys.


I will fabricate the Aleph J before exploring further, and since I'm laid off due to our bad economy, I can only dream--for the time being, anyway.

 

[Luke]

well good luck with the amp and finding work too

 

[carpenter]

well good luck with the amp and finding work too

Thanks, I'm studying to pass my CCB test so that I can become a licensed contractor in Oregon. Hard test of personal desire--course and state exam have tons of details (I think that's the technical term) regarding contract laws and regulations.

 

[Luke]

my contract expired recently and I used my downtime to study, it helps you feel employed and also land the next job
Fortunately I found work quickly so I start my new job on Wednesday.

I would however like to build you amp one day, along with 30 other nice amps on this forum.

 

[carpenter]

Let me know how they turn out.

 

[Luke]

 

[JimT]

It was more of a mental exercise and a chance to chat with the boys.


I will fabricate the Aleph J before exploring further, and since I'm laid off due to our bad economy, I can only dream--for the time being, anyway.

If you know of a source for Aleph J PCB's I would appreciate a pointer to the source.

Thanks
Jim

 

[Luke]

yeah I would buy a set too.

 

[Nelson Pass]

I should make some of those available, shouldn't I.

 

[carpenter]

I should make some of those available, shouldn't I.

Cheap?

 

[Variac]

Cheap or not, I could use a pair, as I am kinda leaning toward such a thing for my Burning Amp cases..

 

[Looneytunes]

I should make some of those available, shouldn't I.

Definitely...

 

[Luke]

I should make some of those available, shouldn't I.

Its getting complicated, Nelson are you talking about the firstwatt version or Carpenters version. Either way Im interested

 

[flg]

I should make some of those available, shouldn't I.

Please