Aleph Mini with JFET input?

Arie · 12th March 2008, 07:47 PM

Hello,

Is it possible to build an Aleph Mini with a JFET input?
I drew the attached diagram of an Aleph Mini, with the input stage of the Aleph J. Off course the 15 Volt of the Mini does not match with the 25 Volt of the Aleph J. Can someone help to determine the values of R1..8 , C1 and C5?
I want to drive my (almost) built horns with the Fostex FE206E.
Preamp is a zen balanced line stage.

I am looking forward to your reactions!

GRollins · 12th March 2008, 11:23 PM

Sorry, but the Force is not strong enough in me to see your schematic...

Grey

HIPCHECK · 12th March 2008, 11:40 PM

Grey maybe its your old computer playing tricks on you? I see the schematic? signed YODA!

paulb · 13th March 2008, 12:16 AM

Well, I must have an old Grey computer as well, because I don't see it either.
She ain't what she used to be...

Arie · 13th March 2008, 08:02 AM

Thank you for the replies. I hope the file comes this time with the message.

Best regards,
Arie

Arie · 13th March 2008, 10:14 AM

... a pdf file of 16 kB don't have to be a problem I guess. I will try it again.
Maybe there is another way to send to you this file?

Best regards,
Arie.

jacco vermeulen · 13th March 2008, 11:56 AM

Duuh

Arie · 21st March 2008, 05:18 AM

Thank you Jacco, this is only a little more complicated. I will build this on the board with the holes. It will take a while, because i have don't have much time and have to find the parts. The 2SJ109 is available at the audiofactory in Haarlem. (too bad the 2SK389 not for other projects)

jacco vermeulen · 21st March 2008, 08:28 AM

The B-J schematic was merely meant as a reference for you, not an assembly manual.

At $20 for a single J109, Mr Herweijer&Houthuijzen must be on a roll.

steenoe · 21st March 2008, 05:17 PM

Quote:

Originally posted by jacco vermeulen

At $20 for a single J109, Mr Herweijer&Houthuijzen must be on a roll.

I am glad that I dont find myself in the market for some of those

12th March 2008, 07:47 PM	#1
Arie diyAudio Member Join Date: Jun 2004 Location: Dordrecht	Aleph Mini with JFET input? Hello, Is it possible to build an Aleph Mini with a JFET input? I drew the attached diagram of an Aleph Mini, with the input stage of the Aleph J. Off course the 15 Volt of the Mini does not match with the 25 Volt of the Aleph J. Can someone help to determine the values of R1..8 , C1 and C5? I want to drive my (almost) built horns with the Fostex FE206E. Preamp is a zen balanced line stage. I am looking forward to your reactions! __________________ ---

12th March 2008, 11:40 PM	#3
HIPCHECK diyAudio Member Join Date: Jun 2004 Location: ARKANSAS	Grey maybe its your old computer playing tricks on you? I see the schematic? signed YODA! __________________ If a inch of duct tape will fix it, 3 feet should fix it for life!!!!

13th March 2008, 11:56 AM	#7
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	Duuh __________________ Looks like Sponge Bob has killed another thread.

21st March 2008, 05:18 AM	#8
Arie diyAudio Member Join Date: Jun 2004 Location: Dordrecht	Thank you Jacco, this is only a little more complicated. I will build this on the board with the holes. It will take a while, because i have don't have much time and have to find the parts. The 2SJ109 is available at the audiofactory in Haarlem. (too bad the 2SK389 not for other projects) __________________ ---

21st March 2008, 08:28 AM	#9
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	The B-J schematic was merely meant as a reference for you, not an assembly manual. At $20 for a single J109, Mr Herweijer&Houthuijzen must be on a roll. __________________ Looks like Sponge Bob has killed another thread.


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12th March 2008, 11:23 PM	#2
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	Sorry, but the Force is not strong enough in me to see your schematic... Grey

13th March 2008, 12:16 AM	#4
paulb diyAudio Member Join Date: Jun 2001 Location: Calgary	Well, I must have an old Grey computer as well, because I don't see it either. She ain't what she used to be...

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