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Old 30th June 2004, 08:26 PM   #1
Stefano is offline Stefano  Italy
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Default chioce bw A75 and aleph30

Hello, i'm here again to ask you somethig stupid because of my ignorance. After i've built bzls now i need a power amp and i'm looking for wich between A75 and aleph30, two very different amps but the question is: wich one is more simple to build without PCB?
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Old 30th June 2004, 09:11 PM   #2
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Aleph 30 is slightly simpler. What speaker are you going to
drive?
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Old 1st July 2004, 02:52 PM   #3
Stefano is offline Stefano  Italy
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Default 89 dB

ESB cdx-sb4, 89dB tree ways paper cones, very friendly to drive, actually i'm driving'em with a 15W (30 years old) tube amp in a very relaxing way
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Old 1st July 2004, 02:58 PM   #4
Stefano is offline Stefano  Italy
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... pneumatic suspension...it seems really that the winner will be aleph30...
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Old 1st July 2004, 04:32 PM   #5
Stefano is offline Stefano  Italy
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Default regulated supply

I ask to you Nelson, it's possible to adapte regulated-modulated pwr supply from zenv3 for aleph30?
And use a single power MOSFet like irf040?
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Old 1st July 2004, 04:38 PM   #6
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I've built both of those amps, and while I had no problem with Aleph not using any PCBs, I wouldn't probably approach A-75 without those. While output stage is not a problem to wire, the front end is a bit more complicated.

That said, Aleph is also a better sounding amp.
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Old 1st July 2004, 04:50 PM   #7
Stefano is offline Stefano  Italy
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Tank you Peter! You've built it as it is in the service manual?
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Old 1st July 2004, 04:58 PM   #8
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Actually I've built Aleph 5, which from construction POV is not that much different than Aleph 30.

http://www.passdiy.com/gallery/aleph5-p3.htm
http://www.passdiy.com/gallery/a75-p7.htm
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Old 1st July 2004, 05:17 PM   #9
Stefano is offline Stefano  Italy
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My admiration for your work is unlimited, you've got a sense of 3D that i wish to find!
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