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Old 18th May 2013, 11:57 PM   #31
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Quote:
Originally Posted by c_door View Post
Hi
I've ordered two r-core transformers from Selectronic twelve days ago. They were listed as available at the time, and still they are. Anyway, they haven't been shipped yet.
Sent them an email two days ago. No answer at all.
This is not e-commerce, this is e-s**t.
I'm opening a Paypal dispute to have my money back, and buy some good trafos from toroidy.pl instead.
What a shame..

Try calling them, i got a call from a English speaking lady saying that the shipping company they used had of some reason returned the package to Selectronic,
Some days later the package turned up at my post office.
To bad they did not send me the tracking nr by E-mail....
If you do want R-cores you are left with few choices, my limited knowledge informs me that R-cores only made in India by: Shilchar Technologies Limited (Selectronics Vendor) and in China, Audio Catalog sells R-Cores made in China, they have also custom built.
Selectronic is the cheepest i have found though

Remember that the Polish toroids need to be manufactured
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Old 19th May 2013, 08:45 AM   #32
c_door is offline c_door  Italy
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Location: Milano, Italy
thank you Pellesmil,
I see you had the same experience with this dealer.
I don't think anything has been shipped: an email should be sent to the customer as soon as the item leaves the shop (it was written in the order confirmation mail).
If they have problems with the item provider, they shouldn't list the thing as "en stock: 26" or alike, and mainly they should inform the customer ad answer emails.
We can't accept this kind of e-commerce behaviour in 2013 in my opinion.
Anyway, tomorrow I'll file ebay for a refund if nothing happens. bye
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Old 19th May 2013, 09:16 AM   #33
alayn91 is offline alayn91  France
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Hello,

Be aware, there have been a lot of working days off, in France, in the first half of May.
I guess Selectronic will be open only on next thuesday.

I can try to help you, if you still have problem with your order.
Give me your order and shipping informations by PM.

Regards.
Alain.

Last edited by alayn91; 19th May 2013 at 09:20 AM.
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Old 19th May 2013, 11:38 AM   #34
c_door is offline c_door  Italy
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Thanks a lot Alain for the info and the availability.
I'm just back from my father's house (my shipping address).
The trafos have been delivered yesterday
Funny thing, my order on the Selectronic website is still "En cours de traitment".
They need to improve the interface to customers.
A small delay can be acceptable, for sure I don't make a living building diyaudio. Only, a better communication would avoid this kind of rants.
Thanks again. Carlo.
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Old 20th May 2013, 09:53 AM   #35
alayn91 is offline alayn91  France
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Hello,

You received them, it's great !

"a better communication would avoid this kind of rants"
I agree with you.

Regards.
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Old 20th May 2013, 11:48 AM   #36
AndrewT is offline AndrewT  Scotland
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Send a copy of all the bad rep they are getting on this Forum.
They may pay attention and do something about not trying to lose potential customers.
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Old 5th June 2013, 11:47 AM   #37
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Interesting how are they going to treat my order of 2x r cores
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Old 6th June 2013, 10:42 PM   #38
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Quote:
Originally Posted by AndrewT View Post
which parameters are better?
Better HF filtering?

Toroidals are good in (low) magnetic radiation, but they fail in filtering.
Their bandwidth is the reason why they're even used as output transformers.

Correct me if I'm wrong.

If my gussing is true and this company usually does CS manage better, then
I will shurely give these R-cores a try.
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Old 10th June 2013, 04:24 PM   #39
AndrewT is offline AndrewT  Scotland
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So which parameter/s of an Rcore better suit HF filtering than a Toroid?
Quote:
Their bandwidth is the reason why they're even used as output transformers.
and the lack of inductance at bass frequencies is why toroids are sometimes rejected for output transformers in Valve/Tube Power Amplifiers. HF transmission is not allways a good thing.

An Rcore with balanced windings will have excellentHF transmission.
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