I think he just did!
Great care is taken in choosing not only the value of components used in the assembly, but also the type of components and even the manufacturer of these components. Most of them – such as connectors, transformers, cables, the solder and resistors are specially manufactured for YBA in France.
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Great care is taken in choosing not only the value of components used in the assembly, but also the type of components and even the manufacturer of these components. Most of them – such as connectors, transformers, cables, the solder and resistors are specially manufactured for YBA in France.
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As usual manufacturers recommend their own manufactured stuff. No news there. It is not an answer to the SMPS question.
Due to the complexity and low price of OEM SMPS with all certification stamps they are hard to beat by own manufactured PSUs. That explains todays popularity for a good bit. Then the brand can persevere with own classic transformer based PSUs if “own” is key selling point (but at a price).
Due to the complexity and low price of OEM SMPS with all certification stamps they are hard to beat by own manufactured PSUs. That explains todays popularity for a good bit. Then the brand can persevere with own classic transformer based PSUs if “own” is key selling point (but at a price).
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I just got an epiphany.
"Cèst la nouveau YBA - un box de Purify e un box de SMPS, fabrique en France, sìl vous plait! Tres elegante."
Please forgive my lack of French language skills. I don`t posess the jestering skills of Jacco V, but I try.
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"Cèst la nouveau YBA - un box de Purify e un box de SMPS, fabrique en France, sìl vous plait! Tres elegante."
Please forgive my lack of French language skills. I don`t posess the jestering skills of Jacco V, but I try.
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Merveilleux. Nothing against SMPS and “own”. All is good.
The experiments I did with class A fed by SMPS were very positive.
It is a simple test and possibly a fine outcome.
The experiments I did with class A fed by SMPS were very positive.
It is a simple test and possibly a fine outcome.
Chord Electronics of GB has utilized SMPS for more than 20 years, and having received rave reviews I`m sure they are good enough. And many with them.
And, what is even more importand, at least in the EU, they are efficient and uses far less copper than normal transformers, so lets congregate in praying that we will not be forced to use them. The mere thought makes me shudder.
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And, what is even more importand, at least in the EU, they are efficient and uses far less copper than normal transformers, so lets congregate in praying that we will not be forced to use them. The mere thought makes me shudder.
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We are forced to. Look around you 🙂 Standby power of max. 0.5W allowed I think.
BTW please check prices of Chord devices. The opposite of generic consumer stuff.
BTW please check prices of Chord devices. The opposite of generic consumer stuff.
I have serviced their stuff way back when they still had a Norwegian importer. It was just meant as a reminder that also expensive amps used SMPS. I even still have a 3000 amp laying on my shelf. It`s actually two CP1200 stacked upon each other. I will post some pics next week.
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Clean-up in aisles #2, #4:
Post 2 shows two 24V windings in parallel, but notes 48V delivered, obviously inconsistent, so I'm not clear re what's actually desired.
IF ~ 48 to 50V is the objective, my suggestion was to series connect a 24V and a 25V winding to a 49V result; same with remaining pair, thus yielding two 49VAC windings.
Perhaps thread as already gone elsewhere. Sorry for any confusion.
Post 2 shows two 24V windings in parallel, but notes 48V delivered, obviously inconsistent, so I'm not clear re what's actually desired.
IF ~ 48 to 50V is the objective, my suggestion was to series connect a 24V and a 25V winding to a 49V result; same with remaining pair, thus yielding two 49VAC windings.
Perhaps thread as already gone elsewhere. Sorry for any confusion.
It would be not allowed to have electrical devices with L or N connected to chassis. Yes there is galvanic insulation but as nothing is perfect there is also capacitive coupling (just like transformers). And if the SMPS has a PE connection you better connect that.
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Re sound: If you look closely at the picture in post 1, you will notice that the transformer is a C-core. Primary and secondary on separate bobbins. This results in a much "softer" coupling compared to a toroid, and it`s intentional to get the sound that he, YBA, wants. So, whilst it`s no problem replacing the stock transformer with a doughnut, it totally alters the timbre of the amp.
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Already noticed in my following posts, the result is 24 volt or 25 volt per branch, because wiring is parallel
The better result when adding the second transformer is probably due to the lack of current of just 1 transformer because of the low 3..4 Ohm loads. I would not worry too much about timbre as you seem to need current. According to Michel in post #2 many customers want the HC-DT upgrade which suggest the original transformer is chosen too light in power. You could experiment with a cheap switcher if the amplifier goes forward or backward.
Toroids are the last on the list to consider it seems. YBA is right. R-cores are about as hard to find as 2 original identical YBA transformers (I take you did contact YBA for that?). Choices narrow down to only a few options.
Toroids are the last on the list to consider it seems. YBA is right. R-cores are about as hard to find as 2 original identical YBA transformers (I take you did contact YBA for that?). Choices narrow down to only a few options.
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I`ll post pictures of what I have on tuesday afternoon. I also have some transistors marked Vincent, YBAs lower priced alternative.
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I also have a complete and working YBA Passion 1000 that I want to get rid of. More to come on that.
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Hi I think you want to rethink the drawing. Had to look a few times but I am pretty sure 🙂