K40Y-9: Questions And Comments

Troncones · 1st May 2011, 01:56 PM

These are Russian PIO Caps. Does this symbol indicate the construction of the Cap? Which is the preferred In (Driver Plate) and Out (Output Valve Grid)?

I want to orient them before I run them very long. I have tried them both ways and can't hear a difference.

These Caps sound good. I think they will sound even better after some hours are put on them.

Troncones · 2nd May 2011, 01:06 PM

Somebody must know the answer to this one. A little help please.

tyo94 · 2nd May 2011, 01:36 PM

As far as I know the left side of the logo which you mark with circle is the lead to signal input

ryuji · 01:45 PM

They get pointed in direction of higher potential, at least that its what my friend that uses them told me to do. He also said both ways is fine for it but the way I just described is less distortion

I been using them on my amp for quite some time that way without trouble

ryuji · 2nd May 2011, 01:58 PM

Tube DIY Asylum

zigzagflux · 2nd May 2011, 04:20 PM

I've tested these caps for an outer foil with an o-scope, and haven't noticed a difference either way. Not so with other caps that do not have the aluminum case. Your best bet is to ground the case and leave it at that.

TG · 2nd May 2011, 08:36 PM

Quote:

Originally Posted by Troncones

Does this symbol indicate the construction of the Cap?

Nope.
This is just a manufacturer logo ("Epsilon" factory, Odessa, Ukraine).

Alastair E · 2nd May 2011, 10:41 PM

I like 'em!

Such well made, solid built like a tank hermetically sealed PIO caps and at such a great price from former Soviet Union....

Sound like a VitQ, nice and clear, no bad points IMO...

I always thought that logo denoted the outer foil connection--Guess I was wrong....

Ty_Bower · 2nd May 2011, 11:24 PM

This is what I had always read... but who really knows for sure?

stoolpigeon · 3rd May 2011, 12:05 AM

Any recommendations where to buy them?

Thanks, sp

2nd May 2011, 01:06 PM	#2
Troncones diyAudio Member Join Date: Dec 2009 Location: Orange County, California.	Somebody must know the answer to this one. A little help please. __________________ The Myth: A hand full of Tubes, Caps, Resistors and Iron and you have an Amp. The Reality: You have self induced Dementia. Newbie.

2nd May 2011, 01:40 PM	#4
ryuji diyAudio Member Join Date: Feb 2011 Location: massachusetts	They get pointed in direction of higher potential, at least that its what my friend that uses them told me to do. He also said both ways is fine for it but the way I just described is less distortion I been using them on my amp for quite some time that way without trouble Last edited by ryuji; 2nd May 2011 at 01:45 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Is the outer body of K40Y-9 and Teflon caps insulated?	raver	Parts	1	22nd April 2011 12:02 PM
Replacing CJD capacitors with K40y-9	ronenash	Solid State	0	24th May 2010 04:22 AM
Outer foil k40y-9	12dodeca	Tubes / Valves	4	4th May 2009 11:37 PM
FS: K40Y-9 PIO Caps	truenorth	Swap Meet	1	29th April 2009 03:57 AM
coaxial Line Array Questions/comments	Toast_Master	Multi-Way	16	12th May 2007 10:22 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

2nd May 2011, 01:36 PM	#3
tyo94 diyAudio Member Join Date: Sep 2009 Location: Jakarta	As far as I know the left side of the logo which you mark with circle is the lead to signal input

2nd May 2011, 01:58 PM	#5
ryuji diyAudio Member Join Date: Feb 2011 Location: massachusetts	Tube DIY Asylum

2nd May 2011, 04:20 PM	#6
zigzagflux diyAudio Member Join Date: Oct 2006	I've tested these caps for an outer foil with an o-scope, and haven't noticed a difference either way. Not so with other caps that do not have the aluminum case. Your best bet is to ground the case and leave it at that.

2nd May 2011, 10:41 PM	#8
Alastair E diyAudio Member Join Date: Feb 2004 Location: South Wales	I like 'em! Such well made, solid built like a tank hermetically sealed PIO caps and at such a great price from former Soviet Union.... Sound like a VitQ, nice and clear, no bad points IMO... I always thought that logo denoted the outer foil connection--Guess I was wrong....

2nd May 2011, 11:24 PM	#9
Ty_Bower diyAudio Member Join Date: Mar 2007 Location: Newark, DE	This is what I had always read... but who really knows for sure?

3rd May 2011, 12:05 AM	#10
stoolpigeon diyAudio Member Join Date: Feb 2007 Location: Laputa	Any recommendations where to buy them? Thanks, sp