Yup. That's how I did it. I have but one meter. :-( It's dobale. It just takes a bit more time.
Whoever's biasing with just a single meter, you're a better man than I 
if I had 4 voltmeters I would use all four of them and bias both channels on one go
It still takes time to settle in.
This is one of those advantages diyers have over big companies who can't afford the time.
This is one of those advantages diyers have over big companies who can't afford the time.
I hooked the Mini up to the main rig, and tweaked VO & VB until I convinced myself to put away the meters and just listen. And great googly moogly, am I impressed.
I find that with the jumper in place, it is much closer in character to my direct-coupled 417A/45 SET with regulated heaters and filiaments - and only marginally louder - whereas without the jumper it leans more toward my triode-strapped, cap-coupled Tubelab SSE. My overall preference, as it is with the amps themselves, is the former.
With my Aleph J nearly completed, save tapping 8 holes, assembly and testing, this amp has lit a proverbial fire to get that amp finished - and yet I’m fine leaving the Mini in place until I do.
I find that with the jumper in place, it is much closer in character to my direct-coupled 417A/45 SET with regulated heaters and filiaments - and only marginally louder - whereas without the jumper it leans more toward my triode-strapped, cap-coupled Tubelab SSE. My overall preference, as it is with the amps themselves, is the former.
With my Aleph J nearly completed, save tapping 8 holes, assembly and testing, this amp has lit a proverbial fire to get that amp finished - and yet I’m fine leaving the Mini in place until I do.
It's a Weller TC-202 base with T-201 handpiece, bought surplus in the 80's and given to me by my Uncle when I was racing R/C cars when I was probably 14 or so. Has worked without complaint or any fuss since then.
The tip is a medium conical. Solder is the absolutely outstanding Fire-Metall Pb/Sn/Ag/Cu eutectic that member Einric sells. https://diyaudiostore.com/collections/consumables/products/fire-metall-solder It's the best solder I've ever used, beating out Multi-core and Cardas quad in my opinion.
Hi everyone,
It seems like mouser and most places out of c1 part 505-mks21/100/5 in the BOM. What would be a good equivalent part or if anybody had any spares I would gladly pay. I’m in the USA thank you !
It seems like mouser and most places out of c1 part 505-mks21/100/5 in the BOM. What would be a good equivalent part or if anybody had any spares I would gladly pay. I’m in the USA thank you !
10% tolerance instead of 5%:
https://www.mouser.com/ProductDetail/WIMA/MKS2D041001K00KSSD?qs=ISKKXg98%2B1n4cr7jFRMX8w==
https://www.mouser.com/ProductDetail/WIMA/MKS2D041001K00KSSD?qs=ISKKXg98%2B1n4cr7jFRMX8w==
Thank you Ben for your reply. I almost added it to my cart but wasn’t sure. What is the difference with 10 percent vs 5 percent? Thank you again and have enjoyed reading about your creations and contributions even though I don’t post much🙂
Well, it's 1uF +/- so for 5% it's 0.95uF to 1.05uF and for 10% it's 0.90uF to 1.10uF. As an input coupling capacitor it shouldn't be critical so I wouldn't worry about it.
Will the ACA mini be available as a kit in the diy store? If yes, when is it expected to be available?
Koos
Koos
for Papa, every day is Xmas
why should be different for Greedy Boyz
why should be different for Greedy Boyz
There is apparently a group buy, but if needed I will send boards and semis to the store.
Hi EADFan,
I just did a search for it by part's specs and I found what I think it's the right one. Here is the link.
I once was looking for a part by part number and I couldn't find it but when I searched by specs I found the part so I called Mouser to find out the difference and they told me that it was just the packaging and that's it. so since then, when I can't find the part by the part number then I search by it's specs.
You might want to double-check with more experienced people on the thread just to make sure one of them is the correct part.
Best
Daniel
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