Be careful, I got chastised for buying tubes on eBay!!! Sockets are designed to allow tubes to be plugged in only one orientation. Last edited by slidincharlie Carlo P ; at I don’t know much about the differences between the metal and glass versions. It looked like it was manufactured 6 months ago instead of 60 years! And this is the tube schematic: In other words, shouldn’t I change anything with a new tube?

Uploader: Shakasida
Date Added: 7 March 2009
File Size: 19.29 Mb
Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads: 92889
Price: Free* [*Free Regsitration Required]

It looked like it was manufactured 6 months ago instead of 60 years! Some tubes have top connections.

Originally Posted by slidincharlie Carlo P. Use the PM feature to contact me.

Look for companies that supply tubes to radio restortion type people. This tube is untested therefore sold as is. They are a rather common and cheap tube. If you use a metal tube be sure pin 1 isn’t connected to any voltage and is grounded. But I’ve never used either one! May Thu 15, 2: I just bought 8 of them last week.


Thanks for your replies. Logged rj krohn bigaudioblowhard Hero Member Offline Posts: May Sat 17, Utbe Threads Tube hi-fi advice? Carlo, I forgot to address your other questions.

May Fri 16, The thing on the top is a connection maybe the grid?? Bookmarks Bookmarks Digg del. Ratings and Reviews Write a review. Carlo, I wondered what happened.

R/E/P Community

Last edited by JC ; at The braid is soldered onto the top cap. I was looking at the photo of the installed tube that you posted and I just noticed that the shield braid seems to be disconnected from the top cap.

Books Support This Site: Ask for a 6J7 in the classifieds. I attach here a schematic of the preamp section, in case it helps.

I don’t know much 6i7 the differences between the metal and glass versions. That can is the shield, note the shielded cable shield is soldered to it. Have a Philco in the pile that is missing a 6J7 tube.


/ 6J7 special quality for microphonics

And this is the tube schematic: Forgot about that site’s feature – thanks! I have an old Oahu Valco made tube amp. I can always make believe they sound better, cuz they cost more The radio would have originally used a 6J7G glass, shouldered, bakelite base. The shielding cap is grounded as Enzo pointed out.