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-   -   Crescendo ampilifier elektor1982 (http://www.diyaudio.com/forums/elektor/15503-crescendo-ampilifier-elektor1982.html)

Bensen 22nd May 2003 10:40 PM

Crescendo ampilifier elektor1982
 
2 Attachment(s)
Hello everybody,

I'm new here.
I almost have finished my Crescendo amplifier. It took me 5years to build this beast.
It uses 2x (2 x 2sk135 en 2x 2sj50) mosfet's from Hitachi. You can visit my homepage, where you can find some foto's. In the same enclosure, I builded also 4 smaller amplifiers. The supply consists of 3 toroidal's from 500VA each and a total of 130000F on capacitors.

http://groups.msn.com/BenJanssenBensen's homepage

Tube_Dude 23rd May 2003 01:21 AM

The box!!
 
Hi benson!!

The box of your amp look like the box of the Counterpoint SA220...;)

Congratulations...nice work

Cheers:drink:

Bensen 23rd May 2003 08:01 AM

Thanks.

I build the case totaly by my self. It is made of small iron L-profiles, 20mm x 20mm. All the prints and the case are designed and builded by me. Except the frontpanel. This will be made of a mirror.

danne_linkinpar 15th July 2005 02:11 PM

Have you the elektor paper still???

peranders 15th July 2005 02:22 PM

I have both the english and the swedish articles.... some where it must add.

Bensen, nice job. :up:

DirkD 15th July 2005 02:32 PM

Hi there

I would be very interested to hear your comments on sound quality of the Crescendo amplifier, because I found it somewhat gritty and grainy.

Regards

Dirk

Bensen 15th July 2005 03:53 PM

Well, I can't really compare this amp with many others. But I've build also the crescendo ME with the newer output devices. And my opinion is that the "old" amp sounds better than the new one.

I can't realy describe how it sounds. I think this comes from these devices, many say that these are one of teh best audio MOSFET's ever made.

One question,
C

Bensen 15th July 2005 03:57 PM

Oops sorry,

One question: Can anybody explane me the difference between Audio mosfet's (2s51530/2sj50/2sk1058....buz900...) and the regular mosfet's (IRFP9240/9140/240/140...).
Because I'm designing a new amp, and I can't choose between BJT's (MJL4281/4302) and the cheap IRFP.... devices.


Thanks

danne_linkinpar 15th July 2005 04:45 PM

r du svensk, jag letar efter Crescendo MOSFET 250W??

Har du den byggbeskrivningen?

danne_linkinpar 15th July 2005 04:45 PM

Someone that has the artical about Crescendo MOSFET 250W??


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