Aleph / Aleph X PCB Help Needed

Michael Rothacher · 16th June 2003, 08:10 PM

I'm laying out boards for Aleph X monoblocks and I wanted to get some opinions on separate front end / output boards.

Q. Is there any harm in including the Aleph current source components on the output boards? I notice all of the modular boards on this forum have these components on the input board, and even the commercial X amps have the current source components on the input boards.

Thank you!

Mike

Netlist · 16th June 2003, 08:30 PM

A few things to consider are:
1: keep the signal path as short as possible.
2: keep as much components away from the "big heat"

/Hugo

roddyama · 17th June 2003, 05:42 AM

Mike,

I plan to do the same thing for my hi-powered Aleph-X (3rd project on the list) using 16 FET’s per channel. I planned to use 4 Harvardian’s Aleph output boards per channel and wire them into HiFiZen’s X-amp boards. I would assume that the issues are the same as wiring an Aleph amp to the outputs which had been discussed a few times last year on the forum.

Someone correct me if I assume too much.

grataku · 17th June 2003, 01:26 PM

Quote:

Originally posted by roddyama
Mike,

I plan to do the same thing for my hi-powered Aleph-X (3rd project on the list) using 16 FET’s per channel. I planned to use 4 Harvardian’s Aleph output boards per channel and wire them into HiFiZen’s X-amp boards. I would assume that the issues are the same as wiring an Aleph amp to the outputs which had been discussed a few times last year on the forum.

Someone correct me if I assume too much.

It better work because that's what I plan to do. I will use all 24 mosfets.

Michael Rothacher · 17th June 2003, 06:31 PM

I'm sorry. I wasn't very precise with my description. What I mean is including all of the associated Aleph current source components on the output board. The only wires connecting the boards would be + and - V, feedback, and gate drive.

Thanks for your replies

Mike

roddyama · 17th June 2003, 07:54 PM

Quote:

Originally posted by mrothacher
I'm sorry. I wasn't very precise with my description. What I mean is including all of the associated Aleph current source components on the output board. The only wires connecting the boards would be + and - V, feedback, and gate drive.

Thanks for your replies

Mike

Hi Mike,

Yes, absolutely. You'll need 4 sets of output boards per channel.
Here's Harvardian's board.

Netlist · 17th June 2003, 08:19 PM

Hi mrothacher

Referring to Grey's schematic I think you mean parts:
R31,R32,R33,R34,,R37,V3,C5,C6,Q8 and maybe also Q9,R35,R39
included in the same PCB.

/Hugo

LBHajdu · 29th June 2003, 02:14 AM

To inspire you, here is a picture of my AX board lay out. It’s still a work in progress.

LBHajdu · 29th June 2003, 02:15 AM

here it is with all the layers.

Cambe · 29th June 2003, 04:06 PM

Very nice looking PCB's
Cambe

16th June 2003, 08:10 PM	#1
Michael Rothacher www.audiohobby.com diyAudio Member Join Date: May 2001 Blog Entries: 3	Aleph / Aleph X PCB Help Needed I'm laying out boards for Aleph X monoblocks and I wanted to get some opinions on separate front end / output boards. Q. Is there any harm in including the Aleph current source components on the output boards? I notice all of the modular boards on this forum have these components on the input board, and even the commercial X amps have the current source components on the input boards. Thank you! Mike

17th June 2003, 05:42 AM	#3
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	Mike, I plan to do the same thing for my hi-powered Aleph-X (3rd project on the list) using 16 FET’s per channel. I planned to use 4 Harvardian’s Aleph output boards per channel and wire them into HiFiZen’s X-amp boards. I would assume that the issues are the same as wiring an Aleph amp to the outputs which had been discussed a few times last year on the forum. Someone correct me if I assume too much. __________________ Rodd Yamashita

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16th June 2003, 08:30 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	A few things to consider are: 1: keep the signal path as short as possible. 2: keep as much components away from the "big heat" /Hugo

17th June 2003, 06:31 PM	#5
Michael Rothacher www.audiohobby.com diyAudio Member Join Date: May 2001 Blog Entries: 3	I'm sorry. I wasn't very precise with my description. What I mean is including all of the associated Aleph current source components on the output board. The only wires connecting the boards would be + and - V, feedback, and gate drive. Thanks for your replies Mike

17th June 2003, 08:19 PM	#7
Netlist diyAudio Moderator Join Date: Jan 2003	Hi mrothacher Referring to Grey's schematic I think you mean parts: R31,R32,R33,R34,,R37,V3,C5,C6,Q8 and maybe also Q9,R35,R39 included in the same PCB. /Hugo

29th June 2003, 04:06 PM	#10
Cambe diyAudio Member Join Date: Aug 2001 Location: USA,NorthCarolina	Very nice looking PCB's Cambe

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