In my definition this is an Aleph 9, because it has 2*9 FETs per side, with 1 Ohm source resistors, 2*47 V rail voltage, 3KVA toroidal transformer, 4* 100.000 uF Capacitors with choke. It consumes approximately 500W power/channel. The heatsinks temperature is 35°C above ambient. It has got a weight of 110 kg's (about 240 lbs). Now take a look inside:
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Gyuri said:
I love that shot! Looks like a visual effects
model. 🙂
And that's one heavy Aleph amp. No wonder
it has casters.
Nice...very nice.
Dennis
Thank you, I started my Aleph5 (or should I know say Aleph6) two years and 4 months ago, so I still have some time left 😉
About the sound
My amps evolution:
Firstly i built an Aleph 4 Based on Mark Finnis's design.
Secondly I upgraded it to an Aleph 2 changing the source resistors from 1.5 ohm to 1 ohm.
Finally I changed the number of FETs from 2*6 to 2*9.
The sound is the hardest to describe, not only because my poor English. With increasing the number of FETs and current, the bass is got stronger (I like it.) but the mids and highs became less fluid and airy.
The greatness of Aleph designs is not only in their simplicity, but also everybody can find the way he likes it.
In comparison with my old K4040 its sound is more transparent airy and tight.
while the K4040 is reassuring but we can say it's also boring.
The bass is better, even the Aleph 4's.
My amps evolution:
Firstly i built an Aleph 4 Based on Mark Finnis's design.
Secondly I upgraded it to an Aleph 2 changing the source resistors from 1.5 ohm to 1 ohm.
Finally I changed the number of FETs from 2*6 to 2*9.
The sound is the hardest to describe, not only because my poor English. With increasing the number of FETs and current, the bass is got stronger (I like it.) but the mids and highs became less fluid and airy.
The greatness of Aleph designs is not only in their simplicity, but also everybody can find the way he likes it.
In comparison with my old K4040 its sound is more transparent airy and tight.
while the K4040 is reassuring but we can say it's also boring.
The bass is better, even the Aleph 4's.
Gyuri said:
Nelson Pass said:
Gyuri.
What a project!
I mean .. take a look at the C-L-C power supply filter.
Capacitors SPRAGUE BEER Cans!!!
http://www.diyaudio.com/forums/attachment.php?s=&postid=632259&stamp=1114957809
The L-Inductor in C-L-C filter!!!
http://www.diyaudio.com/forums/attachment.php?s=&postid=632281&stamp=1114959621
This is one amplifier I reallywould like listen to.
Performing heavy Solid rock music.
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