Nice!
Nice!
"however, the linearity thing has meis it possible to explain in laymans terms ?"
I'll give an amateur crack at it!
Bipolars and mosfets all have a region in thier curve where the characteristics are most linear. In an AB amp the transistors go from almost off to almost full on - passing in and out of the linear range.
The Aleph amps are biased in such a way that the fets are constantly within the linear region.They virtually are always in the same state. Mr. Pass has done a nice job of doing this with cheap / durable industrial switching fets.
That's how I understand it anyway. I've built three of 'em. I find the highs are incredible but the bass is not killer - but good. Thank you Mr. Pass...
Originally Posted by mpmarino
Yeah! The bass isn't killer. But it goes deep and it is well controlled. What amaze me is the fact that it sounds so smooooth.
We can't say it is easy to control the two 2234 woofers of the 4435. But the Aleph 2 does a brilliant job.
Good bass means different things to different people and its only as good as the source.
In general I find the bass of most solid state amps taught in the very deep bass but they often bloom in the upper bass and sound quite Colored.
Moreover the problem is the bass sounds the same of every recording with many amps after a while. This leads me to the conclusion the Aleph is a more accurate sounding amp. It may not rip your head of but neither does real music!
The X Aleph I built is even more impressive in this respect.
What preamp do you guys use? A Pass labs design?
I confess I did not truely appreciate my Alephs till I built the BOSOZ balanced line stage.
Some information on Class A and linearity :
http://www.passdiy.com/pdf/classa_amp.pdf
http://www.passdiy.com/pdf/a40.pdf
I too have built a variation of the BOSOZ. It is simply amazing.
I have a balanced Zenlite in my workshop waiting for heat sinks... Have been waiting a couple of months, and will have to wait a few more months... Plan to use it from midbass and up.
Johnny Haugen Sørgård
Yes, it is very accurate and I appreciate that. Sometimes it's not as fun as a Krell though! But then you miss the highs, so back to the aleph but.........well...
Each to his own.
At the moment I use the Aleph 2 for really cold days, the X250.5 on a warm day and the X Aleph when I want to have fun.
The Aleph 30 is a very nice amp though.
Finished
Both Amps playing wonderful on my 250Ti.
GREAT Lows and incredible smooth highs.
Nice work Guido.
Love the Blue Led!
Ian
Sorry for late answer...on hollidays.
Yes it played as loud as the speaker would go, but not nearly controlled and fast enough for my taste. But as stated on a smaller speaker it had superb controll.
Btw: Great project!
Best regards
It seems u got plenty of time
A government big enough to give you everything you want is big enought to take away everything from you
Good to have you back Northwood. Where the heck have you been?It seems u got plenty of time
Oh, time? I work also during the night
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