Another Aleph2

adusson · 20th February 2003, 10:10 PM

Here is some pictures of my really hand-made stereo Aleph2.
I made everyting by my self, cutting,drilling...but it was worth every hour. The amp is made of alu. and the weight is around 83kg. 62kg is used for cooling, and still it goes really hot! The coolingparts are made of 3mm alu. Voltage is around 55volt and the capasistorbank is 0,4F.
The sound is really great!

adusson · 20th February 2003, 10:11 PM

Another picture

Mad_K · 20th February 2003, 10:16 PM

Really COOL methinks!!!

adusson · 20th February 2003, 10:17 PM

Another picture

Philo · 21st February 2003, 12:10 AM

Man, love those DIY heatsinks!

Very nice looking amp.

adusson · 21st February 2003, 07:03 AM

Another picture.

Taco · 21st February 2003, 07:11 AM

Very nice looking amp, I think the amp is stille very warm because the plates are a bit close together. You need a fan to flush enough air between those areas.

Netlist · 21st February 2003, 07:13 AM

adusson,

Indeed very nice; such a beast!!
The wiring of the Mosfets remind me of the old Phase Linear 400 and 700's. But those were TO3's

Must have been a tremendous work to cut all that alu

/Hugo

wuffwaff · 21st February 2003, 09:05 AM

very nice,

I like the idea with the cooling fins turned 90°.

How much bias and how hot does it get?

Do you want to spray the fins black (this would reduce Rth)?

William

adusson · 21st February 2003, 10:45 AM

I don´t know about the bias, it was so long time I mesured it, but the temperature on the inner fins is about 65Deg. Celsius.
About spraying the fins, so if you spray them with for ex. black paint, then you insulate the fins, and then it would go much warmer, so the best thing to do is to make them "blackoxide".
I don´t know what that is on english, but you might know what i´m talking about.
Reg. Anders

20th February 2003, 10:16 PM	#3
Mad_K diyAudio Member Join Date: Sep 2002 Location: Norway	Really COOL methinks!!! __________________ Mads K

21st February 2003, 12:10 AM	#5
Philo diyAudio Member Join Date: Jul 2002 Location: Ever sunny San Diego	Man, love those DIY heatsinks! Very nice looking amp. __________________ Philip "If you didn't make it with your own two hands, its not really yours".

21st February 2003, 09:05 AM	#9
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	very nice, I like the idea with the cooling fins turned 90°. How much bias and how hot does it get? Do you want to spray the fins black (this would reduce Rth)? William __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

21st February 2003, 10:45 AM	#10
adusson diyAudio Member Join Date: Feb 2003 Location: Jakobstad	Hi wuffwaff! I don´t know about the bias, it was so long time I mesured it, but the temperature on the inner fins is about 65Deg. Celsius. About spraying the fins, so if you spray them with for ex. black paint, then you insulate the fins, and then it would go much warmer, so the best thing to do is to make them "blackoxide". I don´t know what that is on english, but you might know what i´m talking about. Reg. Anders

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21st February 2003, 07:11 AM	#7
Taco diyAudio Member Join Date: Nov 2002 Location: Place in the Netherlands	Very nice looking amp, I think the amp is stille very warm because the plates are a bit close together. You need a fan to flush enough air between those areas.

21st February 2003, 07:13 AM	#8
Netlist diyAudio Moderator Join Date: Jan 2003	adusson, Indeed very nice; such a beast!! The wiring of the Mosfets remind me of the old Phase Linear 400 and 700's. But those were TO3's Must have been a tremendous work to cut all that alu /Hugo

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