Aleph 2 psu question

jleaman · 6th November 2002, 01:44 AM

Since i have sold my aleph 5 boards to coloumb. im going to be building a pair of aleph 2's insted. im wondering why i need a 1kva transformer and or will a 750 work just fine. any performance loss. if i need a 1k ill get a 1k. Also what if i get a 1k what will the constant curent draw be and watts from the wall. ill be running 2 aleph 2's. fully balanced. now to my next question. Im etching my boards my self and have found a good board layout from the www.passdiy.comm gallery from some one that posted his pdf boards using 3 boards per mono block 1 main board and 2 boards that hold the fets per side of the heat sink. is this a good way to build it. ? or should i use a difrent way. any one please feel free to comment.

Jason

Peter Daniel · 6th November 2002, 02:06 AM

Using the boards this way is OK, actually that's how I would do it too. 750VA transformer is minimum, but 1000VA is better. I have two 1000VA transformers for sale. I traded them for Aleph2, but it looks that I'll be building only balanced Alephs now, so the volatage is too high. I'm asking USD100 ea. plus shipping. Here are transformers that I got: Aleph 2 Transformers for Sale/Trade

Peter Daniel · 6th November 2002, 02:10 AM

Here is a pic: 750VA Plitron on left and 1000VA Victoria Magnetics on the right (with a shield).

jleaman · 6th November 2002, 02:40 AM

now if you had 2 1ooo va txfrmers i would but but i have no use for one. hehe

Peter Daniel · 6th November 2002, 03:11 AM

I have two 1000VA transformers. You think I'm playing jokes here?

it's just the picture showing only one.

jleaman · 6th November 2002, 03:30 AM

humm how much canadian for both shipped. ? and will they work for my aleph 2's

fcel · 6th November 2002, 03:35 AM

Jason,
Are you talking about Wayne Sanskey pdf file? If you are, he has a fourth board which is use for the power supply. Also and this is for your information, Wayne's signal board is slightly different from Kritijian's board. The difference is in the vicinity of Q5.

Peter's two 1KVA transformers will work perfectly.

Peter Daniel · 6th November 2002, 03:42 AM

fcel,
I guess those are transformers you used as well, right?

Jason, it would be CAD300 plus shipping. I have on idea what shipping would be, maybe Coulomb knows.

jleaman · 6th November 2002, 03:42 AM

yeah i was talking about him ( sansky) should i go for his design is there any problems with his design and i dont need to use his psu do i..

and what does this mean....

( quote ) The difference is in the vicinity of Q5.

jleaman · 6th November 2002, 03:45 AM

humm ill have to see what i can come up with for cash then can yuo wiat a week or so so i can see what i get paid on my payday. im so trying to buy my mac but this darn audio just sux up alot of money LOL ahh the purity of class A MONEY.

6th November 2002, 01:44 AM	#1
jleaman Banned Join Date: Apr 2002	Aleph 2 psu question Since i have sold my aleph 5 boards to coloumb. im going to be building a pair of aleph 2's insted. im wondering why i need a 1kva transformer and or will a 750 work just fine. any performance loss. if i need a 1k ill get a 1k. Also what if i get a 1k what will the constant curent draw be and watts from the wall. ill be running 2 aleph 2's. fully balanced. now to my next question. Im etching my boards my self and have found a good board layout from the www.passdiy.comm gallery from some one that posted his pdf boards using 3 boards per mono block 1 main board and 2 boards that hold the fets per side of the heat sink. is this a good way to build it. ? or should i use a difrent way. any one please feel free to comment. Jason

6th November 2002, 02:06 AM	#2
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Using the boards this way is OK, actually that's how I would do it too. 750VA transformer is minimum, but 1000VA is better. I have two 1000VA transformers for sale. I traded them for Aleph2, but it looks that I'll be building only balanced Alephs now, so the volatage is too high. I'm asking USD100 ea. plus shipping. Here are transformers that I got: Aleph 2 Transformers for Sale/Trade __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

6th November 2002, 03:11 AM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	I have two 1000VA transformers. You think I'm playing jokes here? it's just the picture showing only one. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

6th November 2002, 03:42 AM	#8
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	fcel, I guess those are transformers you used as well, right? Jason, it would be CAD300 plus shipping. I have on idea what shipping would be, maybe Coulomb knows. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

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6th November 2002, 02:40 AM	#4
jleaman Banned Join Date: Apr 2002	now if you had 2 1ooo va txfrmers i would but but i have no use for one. hehe

6th November 2002, 03:30 AM	#6
jleaman Banned Join Date: Apr 2002	humm how much canadian for both shipped. ? and will they work for my aleph 2's

6th November 2002, 03:35 AM	#7
fcel diyAudio Member Join Date: Sep 2001 Location: LA County	Jason, Are you talking about Wayne Sanskey pdf file? If you are, he has a fourth board which is use for the power supply. Also and this is for your information, Wayne's signal board is slightly different from Kritijian's board. The difference is in the vicinity of Q5. Peter's two 1KVA transformers will work perfectly.

6th November 2002, 03:45 AM	#10
jleaman Banned Join Date: Apr 2002	humm ill have to see what i can come up with for cash then can yuo wiat a week or so so i can see what i get paid on my payday. im so trying to buy my mac but this darn audio just sux up alot of money LOL ahh the purity of class A MONEY.

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