Aleph 1,5 ?

adusson · 20th December 2009, 05:41 PM

I have built two monoblocks wich is something between Aleph2 and 1,2.
Works really great and sounds wery good.
Each monoblock uses 600W continosly(2,62A 230V), rail is +-51V, so the get really hot!
Capasistors are Rifa 4x100 000uF and 18pcs. irfp 240 in each amp, trafos are an 11kg 800VA Toroid.
Here is what they look like:

valo · 20th December 2009, 05:47 PM

nice work, have you measured the temperature?, I measure about 70 degrees on the transistors on my diy Aleph 5

jleaman · 20th December 2009, 05:51 PM

monsters!

Zen Mod · 20th December 2009, 05:53 PM

very nice - but you need at least another one 800VA Donut per monoblock ;

800VA is too small for 600VA consumtion

tortello · 20th December 2009, 06:13 PM

Congratulations,
I like your "monsters" very much, and your Triumph ST too!

(even if it is not a Monster!) : D

Marcello

adusson · 20th December 2009, 06:14 PM

Ok, but I think these trafos does the job anyway, here is a link for some more info about the transformers...

https://www1.elfa.se/data1/wwwroot/w...A/05613997.pdf
and
Toroidal core transformer for audio amplifiers 800 VA - ELFA tehnikapood

I have compared with other transformers wich i 1000VA an the weight i only around 7kg, mine is 11kg...

Gyuri · 20th December 2009, 06:26 PM

Very good implementation. I like it because of that Aleph configuration, because ( availing itself of a computer technology terminology) can be scalable configuration.
I mean you build the size that your cooling flange and your power-supply unit allow out of it. Fundamentally sure money question.

It's mine:
My good old-new Aleph

Gyuri

adusson · 20th December 2009, 06:46 PM

Quote:

Originally Posted by Gyuri

Very good implementation. I like it because of that Aleph configuration, because ( availing itself of a computer technology terminology) can be scalable configuration.
I mean you build the size that your cooling flange and your power-supply unit allow out of it. Fundamentally sure money question.

It's mine:
My good old-new Aleph

Gyuri

Thank you for your reply, your amps could almost drive a nuclearplant...

osscar · 20th December 2009, 07:30 PM

Yes, these are very good transformers, silent as the tomb, and no vibration. It was quite expensive ...

Your amps is also perfect.

I also thought about building a new amplifier just can not decide BA-1 or Aleph

Zen Mod · 20th December 2009, 07:39 PM

20th December 2009, 05:47 PM	#2
valo diyAudio Member Join Date: Nov 2003 Location: bodÃ¸	nice work, have you measured the temperature?, I measure about 70 degrees on the transistors on my diy Aleph 5 __________________ -- http://www.polarboing.com

20th December 2009, 05:53 PM	#4
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	very nice - but you need at least another one 800VA Donut per monoblock ; 800VA is too small for 600VA consumtion __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

20th December 2009, 06:14 PM	#6
adusson diyAudio Member Join Date: Feb 2003 Location: Jakobstad	Ok, but I think these trafos does the job anyway, here is a link for some more info about the transformers... https://www1.elfa.se/data1/wwwroot/w...A/05613997.pdf and Toroidal core transformer for audio amplifiers 800 VA - ELFA tehnikapood I have compared with other transformers wich i 1000VA an the weight i only around 7kg, mine is 11kg... __________________ Bort med moms på dill, NU!!

20th December 2009, 06:26 PM	#7
Gyuri diyAudio Member Join Date: Nov 2003 Location: Budapest	Very good implementation. I like it because of that Aleph configuration, because ( availing itself of a computer technology terminology) can be scalable configuration. I mean you build the size that your cooling flange and your power-supply unit allow out of it. Fundamentally sure money question. It's mine: My good old-new Aleph Gyuri __________________ Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat

20th December 2009, 07:30 PM	#9
osscar diyAudio Member Join Date: May 2009 Location: Riga, LV	Yes, these are very good transformers, silent as the tomb, and no vibration. It was quite expensive ... Your amps is also perfect. I also thought about building a new amplifier just can not decide BA-1 or Aleph __________________ If time is money then I'm out of time


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20th December 2009, 05:51 PM	#3
jleaman Banned Join Date: Apr 2002	monsters!

20th December 2009, 06:13 PM	#5
tortello diyAudio Member Join Date: Jul 2001 Location: Genoa (ITALY)	Congratulations, I like your "monsters" very much, and your Triumph ST too! (even if it is not a Monster!) : D Marcello

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