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Old 5th May 2008, 09:12 PM   #1
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Default my finished version of the Aleph P

i wanted to share some pictures with you guys of my Aleph P.
Sounds is nice.
Performances of the circuit are very good.
Matching of the semiconductors within 5mV.
it's a two separate units preamplifier: PSU + line stage

It wasn't very easy to put all the parts together...but here it is...

an overall view of the outside.
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Old 5th May 2008, 09:13 PM   #2
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a shoot of the power supply before it was wired up
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Old 5th May 2008, 09:15 PM   #3
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an inside view of the two boards and the stepped attenuator inside the metal case.
I had to re-do the attenuator because i wasn't satisfied with the values i had first chosen and the quality of the resistors used...
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Old 5th May 2008, 09:19 PM   #4
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a view of the finished attenuator
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Old 5th May 2008, 09:20 PM   #5
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and a last picture with the view of the rear panel
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Old 5th May 2008, 09:39 PM   #6
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Absolutely gorgeous!

The attenuator in particular is a work of art. Congratulations.
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Old 5th May 2008, 09:54 PM   #7
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Default Re: my finished version of the Aleph P

Quote:
Originally posted by Stefanoo
Sounds is nice.

Looks very nice too. It will be easy to convert it to P1.0 once you get tired with the sound
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Old 5th May 2008, 11:24 PM   #8
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Stefanoo,

Very beautifully done! Such elegant simplicity.

May I ask what is the source of the cases you used?

Cheers,
Dennis
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Old 6th May 2008, 06:44 AM   #9
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Thanks a lot guys.

this is the website (English version)

http://www.hifi2000.it/default.asp?Langid=1

it's a nice factory here in Italy and they have very nice stuff.
Prices are good!
Obviously i think shipping outside of Italy wouldn't make it as convenient as it is for somebody here.
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Old 6th May 2008, 08:32 PM   #10
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Here some shots of the output at the oscilloscope.

the first picture is the upper bandwidth limit at -3dB (300KHz!!!)
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