chioce bw A75 and aleph30

[Stefano]

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?

 

[Nelson Pass]

Aleph 30 is slightly simpler. What speaker are you going to
drive?

 

[Stefano]

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

 

[Stefano]

... pneumatic suspension...it seems really that the winner will be aleph30...

 

[Stefano]

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?

 

[Peter Daniel]

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.

 

[Stefano]

Tank you Peter! You've built it as it is in the service manual?

 

[Peter Daniel]

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

 

[Stefano]

My admiration for your work is unlimited, you've got a sense of 3D that i wish to find!