UCD180 questions

[Betto]

Hello, I would like to have the expert's opinion on what I have chosen for my UCD project.
One transformer (I think I'll go with the 160VA round corner transformer suggested by Peter).
Two separate bridge rectifiers (4 MUR860 decoupled with 1 Black Gate non polar 4,7uf/50V).
One 10000uf/63V per rail (Nichicon KG Super, wich are reasonably priced).
What do you think?
Thank you

[omikon]

Hi,

till now I was a passive member of this thread and I learned a lot from it. Jan-Peter announced that they would provide complete PSUs in the future. This seems to be the best solution for me since I'm a DIY newbie, I just saves me ordering caps, tranformer etc. from different places, paying shipping costs for every item. The only thing I wanna know: how long will it still take approx. ?
He announced it in August if I'm right, and when they don't come in the near future, I'll be forced to do it myself.

Do you guys know any comparable sites like schuro.de, who offer complete PSU sets ?

Cheers,

Bob Lorentz


PS @ Bruno: I am very pleased that you are a lecturer at the AES-NL conference, just got the news today !!

[ackcheng]

I noticed that both ucd180 and 400 now comes with AD8620 upgrade. I am just wondering if this need a separate power other than the PSU for the main UCD borad?

Thanks

[Jan-Peter]

Ackcheng,

Indeed we have a new option for upgrading the UcD modules with the AD8620 op amp. But you don't need an extra powersupply, this is already on the PCB

Regards,

Jan-Peter

[hansen]

What do you get from ordering the modules with the AD8620 opamp instead of the standard one? Lower distortion? Different input impedance? Tubelike euphonics? Eternal happines? :-)

[Jan-Peter]

A lot of customers claim a better Audiophile sound......

In comparing with the NE5532 or even the OPA2134. Everybody is free to go for this upgrade or not.

In a way the UcD modules with the standard op amp do sound already quit ok.

Regards,

Jan-Peter

[maxlorenz]

If I understand well one can use big power supply caps without any other smaller caps to smooth out ripple current because this function is already present in the UCD modules


Does anyone know where to buy these famous Epcos Sikorel big caps?

Thanks
Mauricio

[rha61]

http://www.audioxcel.com/caps.htm

[koldby]

HI

I asked this in the UcD 400 thread, but no answer. It is probably more relevant here, so:

Would it be possible, if one only wants to drive the modules from a unbalanced source , to ground the - input of the UcD driver (thru 1.8 K?) and connect the + to the source, thereby bypass both the op-amp and the two 22uF ?


Koldby

[Jan-Peter]

Kolby,

Sorry I don't understand. Can you perhaps make a small drawing?

Regards,

Jan-Peter