What are the key parts for Aleph J that are worth upgrading beyond the standard BOM?
Concentrate on R1, R2, R3, R4 and R24 and associated caps in the direct signal path?
I’m thinking of using s/z-foils - to try and inject some additional openness and move even more towards the speed/fire of tube amps if that is a plausible aim.
Concentrate on R1, R2, R3, R4 and R24 and associated caps in the direct signal path?
I’m thinking of using s/z-foils - to try and inject some additional openness and move even more towards the speed/fire of tube amps if that is a plausible aim.
Dale resistors are cheap and sound good, but my tinkering heart says you could always try fancy components... whether it sounds superior will require some A-B comparisons. Not so easy with soldered components like resistors. You should also consider replacing R9, R10, R11, and R12.
I always advocate upgrading signal Caps. Film caps, where feasible, with copper film bypasses are my go to.
I always advocate upgrading signal Caps. Film caps, where feasible, with copper film bypasses are my go to.
Thanks @Vshredder - do you know what the purpose of R9 to R12 is in the circuit?
For non-critical I will use either Vishay REY or Dale RN65.
For non-critical I will use either Vishay REY or Dale RN65.
ZM, after researching a bit, I understand the difficulty of explaining issues with my previous idea... Too many things wrong with the whole idea. So following previous solutions and Papa Pass's Sage advice... I inverted the whole thing with the intent of using IRFP9240 outputs. One thing I was confused on is whether inverting C2 and C3 polarity is correct (Not an issue with film caps, but I want it to look correct).
Gate-stoppers to prevent possible mosfet oscillation.
Foil resistors may not bring a better sound.
There was theoretical explanation somewhere where on this forum.
Thanks I think I found a few tips on that - traditional resistors may we’ll be better suited. I’ll stick with using a combination of Takman REY and Dales.
I noticed the symbol for the IRFP9240 was messed up, so I fixed that, and I removed the polarity for the negative feedback path after reading that some people use bipolar caps there with no issues.
Attachments
you didn't ........ enough
anyhow, that horse beaten to death, already ...... luckilly just figure of speach
see here, read, search for few more threads with same idea, think
https://www.diyaudio.com/community/threads/inverted-aleph-j.243204/
Would probably end up similar to the one you mentioned. I will play around in Spice and see if I can figure it out, I'll make that thread if it doesn't work out. Thanks again.
