Aleph J - Transformer choice confusion (18 or 20 V)

Thanks all for the thoughtful comments and suggestions. The cost differentials here are (relatively, at least for me) fairly minor. At least on the transformers it’s a few bucks either way. And I’m looking to use as much as possible from diyaudio store so no custom cases for me. I do want the shielded transformers so I’m going to go with dual AS-4220. 400VA and 20V seems like a good sweet spot, and the 500VA don’t come shielded. I really appreciate all the wisdom here and the time people spend helping and I’m following the J Noob thread as well.
 
Thanks all for the thoughtful comments and suggestions. The cost differentials here are (relatively, at least for me) fairly minor. At least on the transformers it’s a few bucks either way. And I’m looking to use as much as possible from diyaudio store so no custom cases for me. I do want the shielded transformers so I’m going to go with dual AS-4220. 400VA and 20V seems like a good sweet spot, and the 500VA don’t come shielded. I really appreciate all the wisdom here and the time people spend helping and I’m following the J Noob thread as well.

Hey @JMacII, I will be interested to see how yours comes together with the dual transformers. Over on the J Noob thread, we'll be using a single transformer in the Deluxe 4U chassis. Will be looking forward to seeing how yours lays out internally compared to ours. BTW, have you ordered all the other parts on the BOMs? We're going to undertake that next week, I'm hoping, so any lessons from your order would be welcome over on the other thread!
 
per un AlepJ standard, un totale di 4-500VA e un cap bank da 120.000-180.000uF per 2 canali.
È sufficiente uno chassis modushop 3U da 400 mm.
Qualunque cosa al di sopra di questo sarà solo una manciata di soldi.

Un'enorme banca di capitali ha bisogno di un trasformatore più grande. Un trasformatore più grande genera più rumore. Quindi il tuo guadagno va dritto fuori dalla finestra. Lo chassis enorme manterrà freschi i tuoi dispositivi di output. Che davvero non vuoi.
per un AlepJ standard, un totale di 4-500VA e un cap bank da 120.000-180.000uF per 2 canali.
È sufficiente uno chassis modushop 3U da 400 mm.
Qualunque cosa al di sopra di questo sarà solo una manciata di soldi.

Un'enorme banca di capitali ha bisogno di un trasformatore più grande. Un trasformatore più grande genera più rumore. Quindi il tuo guadagno va dritto fuori dalla finestra. Lo chassis enorme manterrà freschi i tuoi dispositivi di output. Che davvero non vuoi.
 
My personal built Is:
2 x trafo 19.5v 300va
2 x 8 x 22000uf 40vdc clc psu
3u 400 cabinet modus
2A bias
 

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