Member
Joined 2002
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
Jason
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: http://www.diyaudio.com/forums/showthread.php?s=&threadid=3345&highlight=transformers
Member
Joined 2002
I have two 1000VA transformers. You think I'm playing jokes here?😉
it's just the picture showing only one.
it's just the picture showing only one.
Member
Joined 2002
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.
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.
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.😉
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.😉
Member
Joined 2002
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.
and what does this mean....
( quote ) The difference is in the vicinity of Q5.
Member
Joined 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.
Jason,
Basically, Wayne and BrianGT has the same Aleph 2 board layout which is a little different from the schematic that was publish at Pass Labs. I think by now everybody knows BrianGT board layout. It works perfectly.
Basically, Wayne and BrianGT has the same Aleph 2 board layout which is a little different from the schematic that was publish at Pass Labs. I think by now everybody knows BrianGT board layout. It works perfectly.
Member
Joined 2002
i tryed to email sansky but no reply at all i wonder if briangt will send me pdf layout so i can etc my own. humm ill have to email him and see i guess.. does any one know how much birian charges for boards.. i would like to etch my own as i know how to do that my self..
Jason,
This might be what you are looking for http://www.prism.gatech.edu/~gte619j/alephpcb/
Email Harvardian to see if he has any board left http://www.diyaudio.com/forums/showthread.php?threadid=6104
This might be what you are looking for http://www.prism.gatech.edu/~gte619j/alephpcb/
Email Harvardian to see if he has any board left http://www.diyaudio.com/forums/showthread.php?threadid=6104
fcel,
Sorry to contact you this way, but I don't have your email address.
I was wondering if you still have a copy of the spreedsheet Brian provided for the IRFP240's we purchased from him. I had a computer problem and lost the file. I would hate to have to go back through the matching process.
If you have the file and are willing to email it to me, I would be greatful
Thanks,
Rodd Yamashita
Sorry to contact you this way, but I don't have your email address.
I was wondering if you still have a copy of the spreedsheet Brian provided for the IRFP240's we purchased from him. I had a computer problem and lost the file. I would hate to have to go back through the matching process.
If you have the file and are willing to email it to me, I would be greatful
Thanks,
Rodd Yamashita
Rodd,
Brian ask me about that (I was wondering why he wants that) and I have already email the info to him. I guess he forgot to forward it to you. I'll email that spreadsheet to you now.
Brian ask me about that (I was wondering why he wants that) and I have already email the info to him. I guess he forgot to forward it to you. I'll email that spreadsheet to you now.
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