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  #3571  
Old 04-20-2017, 06:41 PM
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BearCityUSA BearCityUSA is online now
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The Chinese cv181 Dennis is referring to maybe the older blue glass w/white base. He sent one with my LP-27a.

Now shoe horning it into a rectifier socket, that sounds like something I would try.
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  #3572  
Old 04-20-2017, 07:34 PM
Musica Amantem Musica Amantem is online now
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Quote:
Originally Posted by FloridaBoy View Post
No, not as the rectifier. A substitute for the 6BX7 in the LP27a.
Yes ... Yes. My mistake. I temporarily confused the CV-181 with a rectifier. Sorry!
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  #3573  
Old 04-20-2017, 07:37 PM
Musica Amantem Musica Amantem is online now
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Originally Posted by Bombadil View Post
Chinese CV-181 tubes are mislabeled 6SN7 tubes. They are not really CV-181s. And they are definitely not rectifiers. Don't ever stick them into that socket.
Correct. Like I wrote earlier, that was a lapsus. I would never do that !
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  #3574  
Old 04-20-2017, 07:39 PM
Musica Amantem Musica Amantem is online now
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Quote:
Originally Posted by BearCityUSA View Post
The Chinese cv181 Dennis is referring to maybe the older blue glass w/white base. He sent one with my LP-27a.

Now shoe horning it into a rectifier socket, that sounds like something I would try.
Seriously, I have three CV-181's which I may try ...we'll see.

Last edited by Musica Amantem; 04-20-2017 at 07:41 PM.
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  #3575  
Old 04-20-2017, 08:13 PM
Bombadil Bombadil is online now
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Originally Posted by Musica Amantem View Post

Seriously, I have three CV-181's which I may try ...we'll see.
Just be wary about buying any vintage CV-181, like an old Mullard. Those are real CV-181 and run at quite different specs than these new Psvane and Shuguang CV-181, which have the same specs as a 6SN7.
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  #3576  
Old 04-20-2017, 08:19 PM
Musica Amantem Musica Amantem is online now
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Originally Posted by Bombadil View Post
Just be wary about buying any vintage CV-181, like an old Mullard. Those are real CV-181 and run at quite different specs than these new Psvane and Shuguang CV-181, which have the same specs as a 6SN7.
I think I have all the input tubes I need for my gear, so I won't, and I'm aware of those differences. Thanks for the warning.
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  #3577  
Old 04-20-2017, 10:08 PM
Analog Addict Analog Addict is online now
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I think Dennis is currently using the Psvane CV-181 in some of his gear....
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  #3578  
Old 04-21-2017, 07:13 AM
FloridaBoy FloridaBoy is online now
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Quote:
Originally Posted by Analog Addict View Post
"Allan:

Yes, one can use a 6SL7, 6SN7, 6BL7 or the 6BX7. I’ll tell ya what .. that CV-181 from China is a real treat as well in the low impedance buffer output stage of the LP-27a or the new LP-3a


Dennis"

There you have it....
If you have other tubes that will work try them because you never know. The difference is subtle but real.
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  #3579  
Old 04-21-2017, 09:09 AM
Musica Amantem Musica Amantem is online now
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Originally Posted by Analog Addict View Post
I think Dennis is currently using the Psvane CV-181 in some of his gear....
That is my current favorite input tube, so I may try that. For some reason though, I feel as I may be disrupting a perfect job with the current preamp complement set ... but, if there's nothing to loose ...
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  #3580  
Old 04-22-2017, 11:47 AM
nhparrot nhparrot is online now
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Quote:
Originally Posted by Bombadil View Post
My favorite is the Westinghouse Tall, Black Plate, Copper rod 6SN7GTB manufactured in the late 50s and early 60s. It sounds so clean and open.
Picked up one of these for under $20 on that auction site. On my Hickok 6000, it tests great and balanced. Giving it a test drive in my amp.
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