Crescendo ampilifier elektor1982

Bensen · 22nd May 2003, 10:40 PM

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 130000µF on capacitors.

http://groups.msn.com/BenJanssen Bensen's homepage

Tube_Dude · 23rd May 2003, 01:21 AM

Hi benson!!

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

Congratulations...nice work

Cheers

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.

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

Är 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??

23rd May 2003, 01:21 AM	#2
Tube_Dude diyAudio Member Join Date: Mar 2002 Location: Aveiro-Portugal	The box!! Hi benson!! The box of your amp look like the box of the Counterpoint SA220... Congratulations...nice work Cheers __________________ Jorge

15th July 2005, 02:22 PM	#5
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I have both the english and the swedish articles.... some where it must add. Bensen, nice job. __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

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23rd May 2003, 08:01 AM	#3
Bensen diyAudio Member Join Date: May 2003 Location: Belgium, Limburg, Bree	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.

15th July 2005, 02:11 PM	#4
danne_linkinpar diyAudio Member Join Date: Jul 2005 Location: sda	Have you the elektor paper still???

15th July 2005, 02:32 PM	#6
DirkD diyAudio Member Join Date: May 2004 Location: Paarl, South africa	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

15th July 2005, 03:53 PM	#7
Bensen diyAudio Member Join Date: May 2003 Location: Belgium, Limburg, Bree	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

15th July 2005, 03:57 PM	#8
Bensen diyAudio Member Join Date: May 2003 Location: Belgium, Limburg, Bree	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

15th July 2005, 04:45 PM	#9
danne_linkinpar diyAudio Member Join Date: Jul 2005 Location: sda	Är du svensk, jag letar efter Crescendo MOSFET 250W?? Har du den byggbeskrivningen?