Aleph X from KRISTIJAN KLJUCARIC

[webercarbmann]

Hi all of you.

About the Aleph X i have a simple question. The PCB`s from Kristijan. How close it this circuit to the real thing? How much output power in 8 Ohm? (+-22 V 8 output devices) How does this relate to the aleph X production range?.

[kilowattski]

Download the spreadsheet AXE-1.xls from the Aleph X thread and simply plug in the numbers. The spreadsheet says at a 6 amp bias with 22 volt rails and 8 devices you will get 100 watts into 8 ohms with each device dissapating 33 watts for a total dissapation of 264 watts. This spells big big heatsinks and power supply.

[grataku]

While Grey's circuit embodies the original idea behind Nelson Pass patented differential circuit, that circuit is not the clone of the XA production amplifier. KK amp is nothing more than another variation on the theme, which I am sure will perform normally after some minor tweaks.

I have already made public my objection with regard to KK whole idea of taking a patented circuit, making a board for it (abeit a well laid out board) and retailing it on his site for 50 UDS/each.

Kristian is a nice guy and keeps a low profile on this site, that being said, I haven't seen a disclaimer or an endosment of this board outlet point from Pass Labs. Until such issues are resolved, I strongly discourage people from buying anything from Kristian.

[planet10]

It is the official position of the forum that until Kristian settles IP issues with PASS Labs that links to his site are against the rules about links to IP infringement & pornography.

dave/planet10

[Coulomb]

Originally posted by grataku
While Grey's circuit embodies the original idea behind Nelson Pass patented differential circuit, that circuit is not the clone of the XA production amplifier. KK amp is nothing more than another variation on the theme, which I am sure will perform normally after some minor tweaks.

I have already made public my objection with regard to KK whole idea of taking a patented circuit, making a board for it (abeit a well laid out board) and retailing it on his site for 50 UDS/each.

Kristian is a nice guy and keeps a low profile on this site, that being said, I haven't seen a disclaimer or an endosment of this board outlet point from Pass Labs. Until such issues are resolved, I strongly discourage people from buying anything from Kristian.

So Paolo, Kristijans board is based on the Pass Labs design which has not been opened to the DIY community, where as Grey's design was a design path of his own, independant of Pass Labs?

Kristijan clearly marks and etches the boards with Pass labs Clone branding, but of course means nothing if Mr. Pass has not given public rights to the design.

I was considering buying a pair of Kristijans boards even though I already have a Dozen of Grey's boards from Chad.

Hummm

Anthony

[protos]

I don't really see fundamental differences between the basic Rollins circuit and the KK.Some resistor value differences really.
Should sound the same.
However I think Chads boards are better because they are double sided/plate thru and more compact.The quality is also probably a little better than the KK boards that I have seen.

[bbakota2000]

Originally posted by protos
The quality is also probably a little better than the KK boards that I have seen.

I seriously doubt this!

[kilowattski]

Correct me if I am wrong but as I understand it Kristjan's boards are all marked as Pass Labs Clone and he claims to sell them at cost therefore making no profit. His boards are very high quality also. Being honest, I would not be being an Aleph P right now if it were not for his boards. I don't see much difference between his boards and a group buy since he is not doing this as a commercial venture and not making a profit. Other than some component values I really do not see much difference between the Grey Rollins version of the Aleph X and Kristjan's Board.

[UrSv]

Originally posted by bbakota2000


I seriously doubt this!

Since I have bought from both KK and the group buy I can without hesitation say that the KK boards are nowhere near as good as the HifiZen boards.

[kilowattski]

I have also have Chad's board and a couple of Kristjan's boards and I think both are of excellent quality. I HAVE seen a few badly made boards in my day and both are clearly superior.