Aleph J for Universal Mounting Spec

[henryve]

So 220R should be par for the course on the 2SJ74s as gate stoppers as well? Note that the IRF MOSFETs already have 221R gate stoppers as per the standard Aleph J circuit diagram. (R9, R10, R11, R12).

[buzzforb]

I think its best just to stick to original numbers. I am sure anything can be tweaked to perfection, but this should happen on individual basis, as all folks builds will be different.

Initial prigin for matched quad will be $12. If using dual output pairs, as I suggest, then $24.

[henryve]

OK, the BOM has been updated yet again. Please review. Especially you buzzforb since you have been implicated.

[henryve]

Arghhh damn, just after lunchtime and my brain is on siesta. BOM attached.

[buzzforb]

Perhaps attach schematic used to BOM, as it will make comparisons and reference easier. there are a couple different ones floating around.

[henryve]

I will see what I can do.

[henryve]

I have now moved the BOM status to Revision A.

[luvdunhill]

For C4, a 10uF/25V cap might fit better: RFS-25V100ME3#5.

I'll look over the rest a bit later.

[buzzforb]

Spec wise, Panasonic FM is hard to beat. That says nothing of sound. Ifs it's input cap, I would stick with Elma If possible, but you may not her difference considering bypass mkp. Sorry to be guessing, but I don't know what schematic we are referencing.

[6L6]

henryve -- Thanks so much for your work on this! The BOM and notes will be extremely helpful to everybody wanting to build this amp.

As for buzzforb's suggestion of attaching a schematic, I think that's a great idea, it's just that there isn't a really good one yet - the original schematic dosen't have any of the changes, and the eagle schematic that didiet used for making the PCB has a bunch of extraneous bits to facilitate the PCB drilling and pads...

Once we have the PCB tested I will make sure there is an "official" schematic for this. In the time being, didiet's is best.

Question - does anybody know what software Nelson uses for his schematics? Visually it's very appealing, I would love to have the final schematic drawn in that...