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Old 12th April 2007, 05:11 AM   #1
dsiroky is offline dsiroky  United States
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I have a pair of Martin Logan Aeon's.

I've just embarked on building the ECDESIGNS DI-16 NOS DAC with balanced outputs as my source. (hooked up to a PC with CD's ripped with lossless encoding).

I plan to plug it straight into my PC USB port, and not use a pre-amp at all.

Next, I need to upgrade my amplifier (I am currently using an Adcom 5400 which is ok, but not sure it makes my speakers shine). Any suggestions on what I should build that will work well in this environment?

Should I build a 100W Aleph-X, from what I read I'm not sure it's a good match - ML speakers can go down to 2ohms.

What's a good amp suggestion that I could try build myself to drive the ML's without a pre-amp?
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Old 12th April 2007, 08:15 AM   #2
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imho, you should build an earlier Aleph version for the ML.

The types that go to PP deliver plenty current, and to this day will blow away a lot of commercial amps with high $ tags.
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Old 12th April 2007, 05:44 PM   #3
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Maybe an A75
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Old 13th April 2007, 04:18 AM   #4
dsiroky is offline dsiroky  United States
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Thanks for the feedback.

Will an a75 have enough power - or should I look at the higher power thread I see from a few months back and see if I could manage that project? The std a75 has pretty clear instructions / circuit designs - I'm not that comfortable with modding/customizing designs.

Building a couple of aleph 2 monoblocks looks a little easier, though I haven't seen much written about how well the aleph 2 would drive the low impedance of the ml aeon's.

I'm assuming either way - both these projects should be a significant improvement over the adcom gfa5400 right?
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Old 13th April 2007, 06:34 AM   #5
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I take the opportunity to ask to Nelson, if he wants to reply, the following question:

What do you think is the best in between the Aleph X (100W monoblock version ...Stenoe's version) ando the normal Aleph (A2 A75 A5...and so on)?

What are the sonically difference and technical characteristics of the different versions that oyu found so far?

What is the best version for you?

I don't know if you will reply at this thread...but i hope so....because i'm very curious to know ....and because i'm going to start building a power amplifier in a few weeks.



I'm sure that many of us is wondering the same thing




Best,
Stefano.
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Old 13th April 2007, 10:24 AM   #6
Stefano is offline Stefano  Italy
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Hi Stefanoo!

The A75 is not an aleph amp, as you can see on www.passdiy.com
it`s a push-pull amplifier with 2 or 3 stages and it has more driveability for the most demanding speakers like electrostatics and so on!

I hope it would help!

Stefano
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Old 13th April 2007, 10:38 AM   #7
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right....i still get confused with the aleph ...normal A and the X version and so on...

Anyways....i would be very curious to know what he thinks its the nicest sounding amp here available for the diy.

Indeed i know that the sound of an amplifier depends strongly upon the matching with the other components.

But i don't know what to build...i guess that it could be taken as a good sign of abondance of projects (niceeee!!!)....

Would it be better to build the 100w monoblock version of the Aleph X or the "old" A75 ...or something else....?!?

...adviceeee
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Old 13th April 2007, 06:52 PM   #8
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Quote:
Originally posted by dsiroky
Will an a75 have enough power
It will have enough curren, and the design is robust enough
to take you to higher voltages without much alteration.


Quote:
Originally posted by Stefanoo
What do you think is the best in between the Aleph X (100W monoblock version ...Stenoe's version) ando the normal Aleph (A2 A75 A5...and so on)?

What are the sonically difference and technical characteristics of the different versions that oyu found so far?

What is the best version for you?
I have not built the Aleph X 100W as such. As to the general
differences, you will generally find that the X balanced output
Alephs are more dynamic and have lower distortion than the
single ended versions.

The preferences are split, however, and a lot depends on the
context of the system.

Me? I have no particular best - they are all different, and all
shine in their own way.

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Old 14th April 2007, 06:28 PM   #9
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the power amp would have to match the Aleph P1.7 that i'm completing now and with the B&W 805 Nautilus.



May you, Mr. Pass, tell me what you think is the best power amp to insert in such chain?

I greatly thank you for your precious advice.

Best,
Stefano
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Old 14th April 2007, 10:45 PM   #10
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I don't know.

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