Nelson Pass said:
You're a tease. 🙄 I'm a buyer!
How about making a board for all those IRF250's you so wonderfully gave away at BAF? Any idea what the IRF250 would sound like in this circuit?
-David
If I remember correctly, Nelson told me that the 250's are "just" two 240's in a single case. Since the case is a metal TO-3 I think that keeping it cool won't be a problem. I too was thinking along the lines of an Aleph J with IRF 250's. But since we have a lot of them and the Burning Amp cases are quite well heatsinked, with higher voltage supplies, it would be nice to have a "High Output Aleph J"
I don't think that it would be a big problem to individually wire the 250's . After all, there won't be THAT many of them in the amp..
I don't think that it would be a big problem to individually wire the 250's . After all, there won't be THAT many of them in the amp..
Hi Variac,
I vaguely remember Choky posting a new jfet front end for the aleph two somewhere. Cant remember which thread it was, try search.
I vaguely remember Choky posting a new jfet front end for the aleph two somewhere. Cant remember which thread it was, try search.
Variac said:If I remember correctly, Nelson told me that the 250's are "just" two 240's in a single case. Since the case is a metal TO-3 I think that keeping it cool won't be a problem. I too was thinking along the lines of an Aleph J with IRF 250's. But since we have a lot of them and the Burning Amp cases are quite well heatsinked, with higher voltage supplies, it would be nice to have a "High Output Aleph J"
I don't think that it would be a big problem to individually wire the 250's . After all, there won't be THAT many of them in the amp..
Hi Mark,
Thanks, that triggers a recollection. I also seem to remember Nelson also saying the 250's are slightly darker perhaps a little more bass emphasis. Don't hold me to that, it's just a faint memory.
Separate topic ; BTW, I emailed Jason about helping, and did not hear back.
-David
thanks choky, thats on my list of things to do one day.
Aleph 2 is 45V rails, will this work ok?
Aleph 2 is 45V rails, will this work ok?
Zen Mod said:
resistor just above input LTP must be ~ 1K1/1W ....... ppl don't call me 4eyes without reason
Luke said:
why not ; if you choose to make it , just buzz ...... so we'll make dedicated sketch , with triple checked values
An X'ed, jfetted Aleph 2 sounds like just the thing - 'cause it has everything including POWER!!!
Realistically something with more like 60 w/channel.. . an Aleph J5x would be of interest to AR2, and Variac for their shiny Burning Amps! though I suspect that Eric Weitzman would also be interested.
Realistically something with more like 60 w/channel.. . an Aleph J5x would be of interest to AR2, and Variac for their shiny Burning Amps! though I suspect that Eric Weitzman would also be interested.
Ahh Choky, I forgot I have 4 of these unused boards tucked away. Still if Nelson plans on offering board I'd buy.
Mark, need a pair?
-David
Mark, need a pair?
-David
David,
OH MY GOD!!! I was about to write and say that I was interested but it would depend on the final direction that we go. Kind of a crummy response to such a generous offer...
THEN:
I was looking at the photo of those boards, and thought: "those look familiar" Then I thought "Well if those are the old Aleph X boards I can't imagine that I didn't order any" because back awhile I was a sucker for any board being offered. So I went to my Drawer Of Shamefully Unused Boards, AND THERE WERE 4 Aleph X rev 1.0 boards!
Now I don't know how many I'll use, 2 for me and maybe 2 for my brother who won the bidding on an amp. I know that AR2 would be VERY interested in a pair though. I'll write him. Now maybe we will end up going a different way to the same point, depending on what Nelson comes up with, but it looks like we have about enough to standardize on them. I can only assume that there are a lot more out there!
Here's a quote from the Aleph X builder's thread:
"I am also wondering how many will be built in the end. But with over a thousand boards out there I estimate conservatively that if half those that ordered are serious then we have about 100 people that intend to build it in the near future.To be even more conservative I think about 40-50 Aleph-x's are going to be made at least."
Mark
OH MY GOD!!! I was about to write and say that I was interested but it would depend on the final direction that we go. Kind of a crummy response to such a generous offer...
THEN:
I was looking at the photo of those boards, and thought: "those look familiar" Then I thought "Well if those are the old Aleph X boards I can't imagine that I didn't order any" because back awhile I was a sucker for any board being offered. So I went to my Drawer Of Shamefully Unused Boards, AND THERE WERE 4 Aleph X rev 1.0 boards!
Now I don't know how many I'll use, 2 for me and maybe 2 for my brother who won the bidding on an amp. I know that AR2 would be VERY interested in a pair though. I'll write him. Now maybe we will end up going a different way to the same point, depending on what Nelson comes up with, but it looks like we have about enough to standardize on them. I can only assume that there are a lot more out there!
Here's a quote from the Aleph X builder's thread:
"I am also wondering how many will be built in the end. But with over a thousand boards out there I estimate conservatively that if half those that ordered are serious then we have about 100 people that intend to build it in the near future.To be even more conservative I think about 40-50 Aleph-x's are going to be made at least."
Mark
I think I just got lucky:
I was rummaging through my pcb collection and ran across a pair of BrianGT Aleph boards.
I'm comparing schematics (Aleph 3 and Aleph J) and they seem similar except for values, transistors, and transistor footprints.
Looks like I've got some reading to catch up on--unless Nelson's planning a quick turn around on his pcbs. Just in case, I've got a little bitty kitty hidden under the house... 😱
Hummmm.🙂
I was rummaging through my pcb collection and ran across a pair of BrianGT Aleph boards.
I'm comparing schematics (Aleph 3 and Aleph J) and they seem similar except for values, transistors, and transistor footprints.
Looks like I've got some reading to catch up on--unless Nelson's planning a quick turn around on his pcbs. Just in case, I've got a little bitty kitty hidden under the house... 😱
Hummmm.🙂
Variac said:
Vlada sent me that pair ; he still have at least one pair 😉
we are planing his Burning Papamp with these ........
well, we will be making the amps together then.
Vladimir , me ,you and everyone else on DIY Audio (well at least the ones with those Burning Cases!) We probably have enough IRC250's to use- after all you only need half as many!
Vladimir , me ,you and everyone else on DIY Audio (well at least the ones with those Burning Cases!) We probably have enough IRC250's to use- after all you only need half as many!
Variac said:
nope ... not me - I just don't need them ;
even my Babelfishs are still on shelf .... entire amps ;
😉