Aleph J-X Amp Project - Page 57

Luke · 17th December 2009, 08:25 AM

Quote:

Originally Posted by smyslow

Luke,

some month ago I've build a balanced F5 (Patrick's Xed version), so maybe this two posts from the F5 thread are interesting for you:
post #5659
post #6043

I also have Peter's AJ-X pcbs but unfortunately no time to build one.

Uwe

thanks Uwe, tried search but found very little about F5X, I think very few have been built from what I can tell?

derwhalfisch · 05:15 AM

I've been poking around and haven't yet found a definitive answer:

What is the X in this project? Looks like the Aleph J will take an SE or bal input signal to me, so i presume the X is a bridging/parallel mod?

edit: found an answer. Ground one input and all will be well. Put myself on the wiki, down for mono blocks

Jaac · 27th January 2010, 10:39 PM

There is an Wiki for polling the interest for the Groupbuy of ALeph J-X PCB's. Look in my signiture for the link

Alettagla · 24th February 2010, 11:07 AM

Does someone allready have this amp finished with both channels functioning.
And would it be possible to report about its sound character. As in the near future I want to built this amp. I searched this forum but couldn"t find much......
Thanks in advance

Pocoyo · 17th March 2010, 05:00 AM

Hi,

Will you attach your Aleph J or JX Picture Here
Waiting to look Aleph J or JX from GBer

Rgds, jeff

wolf70 · 23rd March 2010, 10:07 PM

Hello to everyone is the first time I write in the forum, waiting for the PCB are ready to implement the Aleph J, I wanted to make me realize the power transformer trasformatori bartolucci, I seem to cost reasonable.
I indicate that specific? 20 +20 V 600VA?

ggetzoff · 4th April 2010, 04:57 PM

The standard Aleph J parts list shows part number 71-CMF5521K500FKEK for R1...R3 at 21k ohm, however the description shows it at 22.1k ohm. Which is correct?

Thanks,

Greg

Tea-Bag · 4th April 2010, 05:55 PM

22.1k is the correct value, but the other is not to far off. I would use the 21k is they were on hand.

ggetzoff · 4th April 2010, 09:28 PM

Teabag,

Thanks. I assume all the values that are listed as .6W should really be .25W?

400 · 05:47 PM

Hi,

concerning the IRFP240 for a Aleph J-X (X-Version):

Which fets have to be matched?

Q5 <-> Q6 and Q7 <->Q8 (matched pairs)
or
Q5,Q6,Q7,Q8 (Matched quadrupels)
or
Q5,Q6,Q7,Q8 for both Aleph J-pcbs (8 matched fets)

Regards,
Marcel

18th January 2010, 05:05 AM	#562
derwhalfisch diyAudio Member Join Date: Aug 2008	I've been poking around and haven't yet found a definitive answer: What is the X in this project? Looks like the Aleph J will take an SE or bal input signal to me, so i presume the X is a bridging/parallel mod? edit: found an answer. Ground one input and all will be well. Put myself on the wiki, down for mono blocks Last edited by derwhalfisch; 18th January 2010 at 05:15 AM. Reason: found answer elsewhere

27th January 2010, 10:39 PM	#563
Jaac diyAudio Member Join Date: Oct 2002 Location: Steenwijk	There is an Wiki for polling the interest for the Groupbuy of ALeph J-X PCB's. Look in my signiture for the link __________________ The right tool for the right job, a very nice Solarboat \|\| Ready for a groupbuy ? CLick

17th March 2010, 05:00 AM	#565
Pocoyo diyAudio Member Join Date: Jan 2007 Location: Indonesia	Dear Peter Daniel Hi, Will you attach your Aleph J or JX Picture Here Waiting to look Aleph J or JX from GBer Rgds, jeff

4th April 2010, 05:55 PM	#568
Tea-Bag not politcally affiliated diyAudio Member Join Date: Feb 2006 Location: Kennebunk Blog Entries: 11	22.1k is the correct value, but the other is not to far off. I would use the 21k is they were on hand. __________________ SemiSouth R085/R100A JFET available now DCB1/BiB #3 on order : SSHV2 Sign up Sheet/Payup Sheet Ends 2-26-2012 CLICK HERE

4th April 2010, 09:28 PM	#569
ggetzoff diyAudio Member Join Date: Nov 2004 Location: Southwest	Teabag, Thanks. I assume all the values that are listed as .6W should really be .25W? __________________ Airline Pilot-If it's not Boeing I'm not going. "Brain as big as a planet..." {sic} Nelson Pass


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24th February 2010, 11:07 AM	#564
Alettagla diyAudio Member Join Date: Oct 2008	Does someone allready have this amp finished with both channels functioning. And would it be possible to report about its sound character. As in the near future I want to built this amp. I searched this forum but couldn"t find much...... Thanks in advance

23rd March 2010, 10:07 PM	#566
wolf70 diyAudio Member Join Date: Dec 2009	Hello to everyone is the first time I write in the forum, waiting for the PCB are ready to implement the Aleph J, I wanted to make me realize the power transformer trasformatori bartolucci, I seem to cost reasonable. I indicate that specific? 20 +20 V 600VA?

11th April 2010, 05:43 PM	#570
400 diyAudio Member Join Date: Jan 2008	Hi, concerning the IRFP240 for a Aleph J-X (X-Version): Which fets have to be matched? Q5 <-> Q6 and Q7 <->Q8 (matched pairs) or Q5,Q6,Q7,Q8 (Matched quadrupels) or Q5,Q6,Q7,Q8 for both Aleph J-pcbs (8 matched fets) Regards, Marcel Last edited by 400; 11th April 2010 at 05:47 PM.

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