I think it was wise to use two output fets. I really enjoyed the one pair version, but coming off the F5T, it just sounded thin in comparison. My original monoblocks started with 3 pairs and then dropped to 2. I think it adds body to the amp. More haroomph. Wayne would be pleased, more output fets do sound better.
You recon that s because of increased mojo driving hardish speakers or because of increased thd? Or perhaps a combination?
More current, more gain, more feedback, less thd. Haroomph!
whatever
I'm stayin' with one IRFP150N instead two IRFP240N

Same coin, different side, although you do get a little more yfs and a little less Ciss, but you got to cook it to do so. Might have to order some and see. Does it have a twin?
correction - it's even better to use SJEP120R100 instead 
check datasheets for IRFP9140 and IRFP9150
50W , well cooled , is nuttin for da critters

check datasheets for IRFP9140 and IRFP9150
50W , well cooled , is nuttin for da critters
correction - it's even better to use SJEP120R100 instead![]()
The fact that some of us can't get any R100s is more a tragedy than a joke.

correction - it's even better to use SJEP120R100 instead
check datasheets for IRFP9140 and IRFP9150
50W , well cooled , is nuttin for da critters
Baad ZM, Baad!
The fact that some of us can't get any R100s is more a tragedy than a joke.![]()
i took is as he was offering to send us some. didnt you?
boy zen ur the man, thanks!
😛
Yup, the Zen Master must have horded some after he got some insider info of SS's impending demise.
I must need to go and travel to other side of iron curtain to provide some friendly persuasion for some R100 gifts. 😀
I must need to go and travel to other side of iron curtain to provide some friendly persuasion for some R100 gifts. 😀
BTW, I have just received my package from Spencer with a matched quad of 2SJ74BL FETs for this project. So the Unobtainium has been taken care of. Trafo from Amplimo should show it's face this week and then I am almost good to go. Next stop is heatsink shopping, which is not a pleasant experience here in the sticks.
Yup, the Zen Master must have horded some after he got some insider info of SS's impending demise.
I must need to go and travel to other side of iron curtain to provide some friendly persuasion for some R100 gifts. 😀
Nah, only thing ZM hoards is speaks.
sadly , I must disassemble my Beast pcbs - I really need some of tiny Jfets , for other purposes


I need some help -
Viewing Gerber Files
Can somebody who knows about this make a composite image of the three layers (top, bottom, silk) from this file and post it here so it is viewable? I'm finally ready to get the Proto PCB made, but I have no idea if this file is good. (It probably is, I would just like to be sure...)
Didiet has done a fantastic job with the layout that I don't want anything to be changed/missed/screwed up in the conversion from his Eagle files to the Gerber that the board house needs.
PM me for the files, I can't seem to attach them here... Sorry.
Viewing Gerber Files
Can somebody who knows about this make a composite image of the three layers (top, bottom, silk) from this file and post it here so it is viewable? I'm finally ready to get the Proto PCB made, but I have no idea if this file is good. (It probably is, I would just like to be sure...)
Didiet has done a fantastic job with the layout that I don't want anything to be changed/missed/screwed up in the conversion from his Eagle files to the Gerber that the board house needs.
PM me for the files, I can't seem to attach them here... Sorry.
Mighty ZM,
The next time you are in the US, or I am in Serbia, I owe you a beer. Or two! 🙂
Thank you very, very much.
The next time you are in the US, or I am in Serbia, I owe you a beer. Or two! 🙂
Thank you very, very much.
naah .......
just make that Jango ...... 😉
you're rude almost as Mighty Moi - still didn't made that B. SIT-2

just make that Jango ...... 😉
you're rude almost as Mighty Moi - still didn't made that B. SIT-2

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