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Old 16th June 2003, 08:10 PM   #1
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Default 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
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Old 16th June 2003, 08:30 PM   #2
Netlist is offline Netlist  Belgium
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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
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Old 17th June 2003, 05:42 AM   #3
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Mike,

I plan to do the same thing for my hi-powered Aleph-X (3rd project on the list) using 16 FETís per channel. I planned to use 4 Harvardianís Aleph output boards per channel and wire them into HiFiZenís 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.
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Old 17th June 2003, 01:26 PM   #4
grataku is offline grataku  United States
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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 FETís per channel. I planned to use 4 Harvardianís Aleph output boards per channel and wire them into HiFiZenís 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.
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Old 17th June 2003, 06:31 PM   #5
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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
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Old 17th June 2003, 07:54 PM   #6
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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.
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File Type: jpg dales_output_board.jpg (28.7 KB, 775 views)
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Old 17th June 2003, 08:19 PM   #7
Netlist is offline Netlist  Belgium
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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
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Old 29th June 2003, 02:14 AM   #8
LBHajdu is offline LBHajdu  United States
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To inspire you, here is a picture of my AX board lay out. Itís still a work in progress.
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Old 29th June 2003, 02:15 AM   #9
LBHajdu is offline LBHajdu  United States
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here it is with all the layers.
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Old 29th June 2003, 04:06 PM   #10
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Very nice looking PCB's
Cambe
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