Darkvoice 336i & 336SE Tuberolling PartII
Nov 11, 2020 at 12:46 PM Post #4,561 of 14,518
Rolling oldies but goodies.. Sylvania 7N7 this morning :wink:
2020-11-10 19.28.51.jpg
 
Nov 11, 2020 at 1:08 PM Post #4,562 of 14,518
Still while off topic somewhat - just to tag a question related to these sovteks/mullards -- one of the markings I have question on is the "Made in England". I know Mullards have something to the effect of Made in Gt. Britain or something similar. Is the Made in England printing an automatic fake giveaway as well as far Mullard/Gec/Europe Gov/Mil Tubes?
That's a great point there @Slade01 makes you wonder if a Brimar is sold as "Made In England" stamped on the tube, is it really a Brimar? :question:
 
Nov 11, 2020 at 1:32 PM Post #4,563 of 14,518
Nov 11, 2020 at 1:51 PM Post #4,564 of 14,518
A FrankImposter! How's it sound?
liking it, comparable to the 6j5 width. I was trying to mod my 6j5 adapter and temporarily ruined it last night 🙄 put it away before I did any more damage to it and rolled the 7N7 to hold me over. the adapter was glued back together. (yes glued. .😂) so back in the 6j5 game but gonna hold off and enjoy some of the other tubes I have laying around. 7N7 for starters. Sylvania today, Philco tomorrow, and then the Lansdale for the weekend. get some kind of picture how they compare. (although I already have an idea)
 
Nov 11, 2020 at 1:54 PM Post #4,565 of 14,518
I was trying to mod my 6j5 adapter and temporarily ruined it last night 🙄 put it away before I did any more damage to it and rolled the 7N7 to hold me over.

OMG! I'm not even gonna ask. We need to get you some Lincoln Logs or Legos to play with instead. :smile::smile:
 
Nov 11, 2020 at 1:57 PM Post #4,566 of 14,518
9DFE8CB5-3B8D-4B10-BF14-66F5FFC13291.jpeg
This is the Franken tube I picked up for $3 with only one testing triode. I plugged it in and confirmed that there is only audio out of the left channel.
I gave the pins a good brush scrub with alcohol, followed by DeoxIT red + gold. They aren’t corroded but have a darkened appearance, still no fix.

Applied some heat, hoping it will awaken something.. nope. Next, diamond bit used to rough up each pin to removed all of the tarnish. Now they are bright again, feeling hopeful. Brushed on DeoxIT gold and plugged the monster back in..

Still only the left channel works.. but it sure does sound nice.
 
Nov 11, 2020 at 2:16 PM Post #4,567 of 14,518

This is the Franken tube I picked up for $3 with only one testing triode. I plugged it in and confirmed that there is only audio out of the left channel.
I gave the pins a good brush scrub with alcohol, followed by DeoxIT red + gold. They aren’t corroded but have a darkened appearance, still no fix.

Applied some heat, hoping it will awaken something.. nope. Next, diamond bit used to rough up each pin to removed all of the tarnish. Now they are bright again, feeling hopeful. Brushed on DeoxIT gold and plugged the monster back in..

Still only the left channel works.. but it sure does sound nice.
There's one out there for way more than $3 on Ebay. You might find one of them in one of those bulk sale listings for the same price ($3), or close with both channels working, worth the hunt. these (Philco 7N7) have the oval micas top and bottom.
https://www.ebay.com/itm/PHILCO-JAN-CHS-7N7-Tube/254501734439?hash=item3b417c4827:g:aRUAAOSw~PdeN0dM
 
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Nov 11, 2020 at 3:26 PM Post #4,568 of 14,518
There's one out there for way more than $3 on Ebay. You might find one of them in one of those bulk sale listings for the same price ($3), or close with both channels working, worth the hunt. these (Philco 7N7) have the oval micas top and bottom.
https://www.ebay.com/itm/PHILCO-JAN-CHS-7N7-Tube/254501734439?hash=item3b417c4827:g:aRUAAOSw~PdeN0dM
Yeah, I saw that one before. Love his sales approach.. price item high, describe as new Open Box and then add “Sold as is. No returns.” Versus marking it untested as is and let it go for a low price. I’d take my chances then.
 
Nov 11, 2020 at 3:32 PM Post #4,569 of 14,518
Yeah, I saw that one before. Love his sales approach.. price item high, describe as new Open Box and then add “Sold as is. No returns.” Versus marking it untested as is and let it go for a low price. I’d take my chances then.
And the JAN-CHS description .. 😂😂 well he's trying.
 
Nov 11, 2020 at 5:09 PM Post #4,570 of 14,518
9DFE8CB5-3B8D-4B10-BF14-66F5FFC13291.jpeg
This is the Franken tube I picked up for $3 with only one testing triode. I plugged it in and confirmed that there is only audio out of the left channel.
I gave the pins a good brush scrub with alcohol, followed by DeoxIT red + gold. They aren’t corroded but have a darkened appearance, still no fix.

Applied some heat, hoping it will awaken something.. nope. Next, diamond bit used to rough up each pin to removed all of the tarnish. Now they are bright again, feeling hopeful. Brushed on DeoxIT gold and plugged the monster back in..

Still only the left channel works.. but it sure does sound nice.

That's a beautiful MonoFrank. :smiley:
 
Nov 11, 2020 at 5:11 PM Post #4,571 of 14,518
Nov 11, 2020 at 6:41 PM Post #4,573 of 14,518

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