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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 433

post #6481 of 10502

 IMO the easiest way to used two 6080/6AS7 power tubes is to connect them in series to a desktop power supply the output is 12V so no need for the regulator and also this type of PS have plenty of current.I even tried running my power tubes and the driver tube in 5V and i can't tell the deference between 6.3V and 5V the volume setting is in the same position so they sound the same to me even the tubes  are under voltage/under powered.You only need to use the regulator for the driver tube but in my case i used the 5V rail from the desktop PS i don't used regulator any more.Thanks to TD!  

post #6482 of 10502

Oh and did i say the tubes are very quiet,some of the tubes that i have it have a slight hum but the hum is not cause by the tubes it's from the DC adapter.Each time i reused the dc adapter the slight hum would come back and for the dc adapter i need to ground the output of the regulator from the LD case but for the desktop PS no need for extra ground.


Edited by i luvmusic 2 - 6/9/14 at 4:15pm
post #6483 of 10502

I think they are the same but the tube on mine are unevenly sticking out.

 

Still looking for hidden ON/OFF switch on adapter. LOL :):o2smile:

 

 

 

post #6484 of 10502

Why is the bottom are uneven?I hoped it didn't cost you arm and leg for that adapters.:beerchug:

post #6485 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Why is the bottom are uneven?I hoped it didn't cost you arm and leg for that adapters.:beerchug:

Well, it did. totally poor workmanship for the price. They look little better in photo. They are actually worst than photos. :beerchug:

post #6486 of 10502

Actually that's not bad at all,I sent back my 9 pin adapters to chinada because of very poor/ugly workmanship but in the end the seller sent me a good one thanks for me for being picky. 

post #6487 of 10502

Sorry for your wallet though.:biggrin:

post #6488 of 10502
Make sure to contact him before you leave negative feedback... The Chinese sellers sure hate the negative feedback.

You should be able to send him pictures and have two express shipped for free.

My guess is they are shorted out inside or not hooked up correctly, they could most likely be fixed depending on how much epoxy they used in the construction.
post #6489 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Sorry for your wallet though.:biggrin:

I had many sleepless nights making decision(buy or not to buy) on C3GS and adapters. HAHAH that will teach me lesson for spending money that you don't have.

post #6490 of 10502

 

Quote:
Originally Posted by TrollDragon View Post

Make sure to contact him before you leave negative feedback... The Chinese sellers sure hate the negative feedback.

You should be able to send him pictures and have two express shipped for free.

My guess is they are shorted out inside or not hooked up correctly, they could most likely be fixed depending on how much epoxy they used in the construction.

I sent the email to "happydiy998" regarding this situation and awaiting reply. I am sure they will fix it (wish me luck) . Here are some   (not so proud DIY headphone stand) :dt880smile:


Edited by CITIZENLIN - 6/9/14 at 5:33pm
post #6491 of 10502
Quote:
Originally Posted by CITIZENLIN View Post
 

I sent the email to "happydiy998" regarding this situation and awaiting reply. I am sure they will fix it (wish me luck) . 

Will good luck! That is the same seller i bought from(9 pin socket saver)but in the end he did pay for the return shipping and sent me a nice pieces after 6 weeks of bugging him/her.

post #6492 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Will good luck! That is the same seller i bought from(9 pin socket saver)but in the end he did pay for the return shipping and sent me a nice pieces after 6 weeks of bugging him/her.

HAHA Thanks alot. Maybe they sent me the one you just returned.

post #6493 of 10502
Quote:
Originally Posted by CITIZENLIN View Post

I sent the email to "happydiy998" regarding this situation and awaiting reply. I am sure they will fix it (wish me luck) . Here are some   (not so proud DIY headphone stand) dt880smile.png
Good Luck! Hope it all turns out good, such a long wait from China.

That is a great stand with a nice collection mounted on it!
beerchug.gif
post #6494 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Will good luck! That is the same seller i bought from(9 pin socket saver)but in the end he did pay for the return shipping and sent me a nice pieces after 6 weeks of bugging him/her.

Looks like I am onto a long ride of back and fort emails with "happydiy998".

I just received two emails with different tunes

The first one said

 

========

Hello,

We will ship one pair tomorrow again,

please kindly ship back the two pcs you received to following address:

Ms. Tse Yuk Chi, Shop 20, G/Fl., Fullview Garden Shopping Centre, 18 Siu Sai Wan Road, Hong Kong. 00852 92166680

tomorrow or the day after tomorrow, we will send you tracking number,

any questions, please kindly contact us again,

Thanks&Best Regards,
Vanessa

 

- happydiy998
====
 
Then I asked her to make sure they work before she them out replacement. This is her 2nd email within 2 hours from previous email
 
=======
 
Hello,

This adapter is made by hand, so every item can not look exactly the same, and meterial can not be find easily, I will ask our technical person becareful when he makes the adaters,

We sold several pairs, now only you says they are not work, we want to test the adapters, would you please ship it back for a check? we did tested it before delivery,

my suggestion is to refund you money fully, and you send back the adapters to us to check, when we confirm the adapters are defective, we will send another pair for free, if not, we will send you money for the shipping cost you spend, is that ok?

Looking forward to hearing from you soon,

Thanks&Best Regards,
Vanessa
=======
 
Simple plug and play turning into nightmare. I don't like the direction its going . SIGH.....
 
post #6495 of 10502

Hello, I recently bought Russian Tubes 6Zh1P-EV = 6J1P-EV ( 6Ж1П-ЕВ ) an quality equivalent of the EF95 / 6F32 and NOS RUSSIAN TUBES 6N6P-I ( 6Н6П-И ) an quality equivalent of the ECC99 / E182CC for my liitle dot MK III amp. Can i install these tubes with out changing anything? You seems to know lot about tube rolling. any help would be really appreciated.

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