Paradise Builders

[Marra]

Hi all
Does anyone have any spare standalone shunt reg PCBs?
Cheers
cv

Pm sent

 

[sq225917]

Yup I have a pair doing nothing.

 

[CV]

Hi Simon
Like waiting for buses!
Got a pair on the way from Marra but def interested in an extra set - maybe just give it a few days so I'm not depriving another diyer?
Cheers
Cv

 

[sq225917]

You can have them, yours is the first request I've seen in years. PM me your address.

 

[fakeall]

G'Day,
Rather late on the way to Paradise, and i have not read the last 400 pages (yet), ...
Therefore my ignorant question: is it still possible to get a set of PCB's?

 

[Marra]

Send a pm to Algar Emi he did a group buy a short while ago. You might be lucky and he still has some boards.

 

[fakeall]

Thank you Keith, cucceeded in getting the last set

 

[fakeall]

In case somebody else (in Europe) is just starting to source bits and bobs, have a look at this Polish supplier for transformers:
ptc10 – PowerUC
No stock of 2x 22V atm, because i bought the last ones, but was told that more will be available in a couple of weeks time.
Paid EUR 56 for four including UPS to Spain.

 

[fakeall]

Would somebody be kind enough to point me to an article/thread that explains what the Calvin buffer actually does, and/or what advantage it will bring to use it with the Paradise. Have tried to get some information, but was not really successful.

 

[Calvin]

Hi,

well .... it just sounds wonderful .
.... or so, I've been told

jauu
Calvin

ps sorry, just couldn't resist

 

[fakeall]

Hi and Thank You,

This answered (at least) the first part of my question:
Start - Me - calvins-audio-pages

Still hoping for a few crumbs on the second part

 

[sq225917]

It removes the need to find honest 2sk170 and provides a more easily tunable output stage with built in offset trimming.

And it sounds a little bit better in terms of separation and drive.

 

[fakeall]

Thank you.


Had another look and it does not look too difficult or expensive to do.


Got 20 pieces 2SK170 from a private source; is there an easy way of finding out whether they are genuine?

 

[nr12]

Do you have a DCA75 pro?
There idss and gm are shown. This is a hint, whether they are original.
Post hires pics. Some fakes are easy to spot.

 

[fakeall]

Sufficient resolution?


Unfortunately i do not have a DCA75 Pro, but i found instructions for measuring idss in the store, which i will do eventually unless i bought obvious fakes.

 

[nr12]

Here are some pictures from originals:
https://www.diyaudio.com/forums/swap-meet/342763-fs-pearl-2-phono-pcbs-4.html#post5985203


Also I don't see the orientation of the symbols on your transistors.

 

[fakeall]

They seem to have yet another font than the one you linked, the "7" has a short vertical line

 

[sq225917]

They look fake the 1 should just be a straight line and that etching looks too deep.

Ill check my own stock.....

 

[sq225917]

2sk170 legit | Simon Clarke | Flickr

These were bought from Alweit about 5 years ago. Curve traced and measure right, and look like the ones I have left over from a B1 build over 10 years ago.

 

[fakeall]

Thank you once again.
I am just at the beginning of a learning curve, so i am curious what might actually have been used to fake these? Would it be a JFET, at least, or something quite different??