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AYA psu mods

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Quote from Guest on 09/05/2019, 23:24

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Re: Pedja's response, if it is okay to ask the 'tweaking of reservoir capacitor cap value and type' for alleviation of 'un-forgiving' sound, does this follow closely enough with Mr. Eldams recipie with FM 330uF + FC 1200uF combo?

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Yes, but the final success with local bypass cap removal will still depend on your system.

In my own AYA II sample that I was using for these trials, an FC 1200 uF remained ultimately the only reservoir cap there. So there is no FM 330 uF. But the local bypass was not ultimately omitted either, and it is BG NX Hi-Q 0.47 uF there.

 

Thanks Pedja.  Any one with 0.47uF BG NX HiQ to swap for 47uF or 22uF 6v3 types?

Quote from Guest on 03/06/2019, 07:48

Thanks Pedja.  Any one with 0.47uF BG NX HiQ to swap for 47uF or 22uF 6v3 types?

New old stock

The best results that I got is to parallel the 1200uf with nichicon KZ 22uf 50 v caps. Fc alone has a more forward sound & crash of cymbals or percussion instruments not so realistic & does not bloom. Beware though with KZ never use 25v version, they don't sound good.  The beauty of AyA is every part of PS does contribute to SQ. If your like me a compulsive tweaker, it is a delight & a learning process as well.

Cheers

Yes, that is interesting, different voltage caps can sound different. I am however not sure about any rule here. For instance, Elna Silmic II usually work better if they are lower voltage.

There really is no rule cause looking a spec sheets alone will not tell you the results Pedja. The only way to know is to try. The Kz 22uf 50v that I mentioned is the sweet spot of the range going higher value sound changes becomes less natural & dynamic. Silmic I only use ARS don't like Silmic ll.  Speaking of which yes lower voltage Silmic sounds more dynamic but dryier sounding & highs not so good. On my AyA there's at least 6 different types/brands of caps. All there to create the sound that Im looking for. Though I cannot design, I've applied lots of wacky tweaking technics on AyA that has been proven to work very well. Probably when you see it in detail you'll scream heresy Pedja. Lol

 

Cheers

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