The old man told me to get it all out of the basement

dp63130 · 22nd March 2008, 03:15 PM

Howdy,
newb here getting ready to build his first rig, thinking the bottlehead might be the best option after reading some threads.

Anyway, my Pop was a hobbiest and told me to start pulling things out of the basement, tons of good stuff but the first things I grabbed were a few boxes of tubes, transformers, caps, etc...

I grabbed about 4 boxes(easily a couple hundred tubes) can anyone give me a little history lesson on these "Conn" tubes? looks like google is saying it was an organ company? There are a ton of GE and RCA tubes, just seems there are way more of the "Conn" type. He said they are all in good working order...

Thanks

nkg · 22nd March 2008, 03:51 PM

You need to show what the printing on the glass is.
nkg

tubewade · 22nd March 2008, 07:29 PM

You have a good assortment of valves to work with. Yes, Conn is an instrument manufacturer and all of the valves that say Conn would have come out of, or been intended for use in, an organ. They weren't manufactured by Conn, but most likely were manufactured by RCA, Sylvania, GE or Amperex.

Ty_Bower · 22nd March 2008, 07:45 PM

Cool find. Lots of small signal tubes, a bunch of rectifiers. I didn't notice too many power tubes, except for the 7868. How many of those do you have?

Have you been to Duncan's tube data lookup page?
http://tdsl.duncanamps.com/tubesearch.php

dp63130 · 22nd March 2008, 08:24 PM

Gotcha.
http://s302.photobucket.com/albums/n...t=CIMG3468.jpg

there are about 300 of these little Conn guys
12 AU7A
Then running vertically they say 36
12
26

http://s302.photobucket.com/albums/n...t=CIMG3469.jpg
there are maybe 40 of these large Conn
7027A

http://s302.photobucket.com/albums/n...t=CIMG3473.jpg
about 2 dozen of these mid sized Conn
7868

http://s302.photobucket.com/albums/n...t=CIMG3479.jpg
no marking on these

http://s302.photobucket.com/albums/n...t=CIMG3474.jpg
Zenith -about 50
12AU7
b3b

http://s302.photobucket.com/albums/n...t=CIMG3471.jpg
http://s302.photobucket.com/albums/n...t=CIMG3480.jpg
There are about 2 dozen of these GE ones
it looks like they say 6DN7
Then on the lower plastic part it says RW 1885

http://s302.photobucket.com/albums/n...t=CIMG3469.jpg

Thanks

dp63130 · 22nd March 2008, 08:32 PM

Thanks for the link, I'll check it out!
There are 26 of the 7868 tubes.

Quote:

Originally posted by Ty_Bower
Cool find. Lots of small signal tubes, a bunch of rectifiers. I didn't notice too many power tubes, except for the 7868. How many of those do you have?

Have you been to Duncan's tube data lookup page?
http://tdsl.duncanamps.com/tubesearch.php

GordonW · 22nd March 2008, 09:18 PM

7027A = basically, a 6L6GC. One version of about the most ubiquitous output tube EVER.

With 40 of those, you can build WHATEVER YOU WANT.

Regards,
Gordon.

7n7is · 22nd March 2008, 09:46 PM

From the RCA receiving tube manual.

http://www.bonavolta.ch/hobby/en/audio/7868.htm

http://www.mif.pg.gda.pl/homepages/f...049/7/7868.pdf

Brett · 22nd March 2008, 10:58 PM

Sell all of the 12AU7's. Horrible audio tube. Use the money for others.

The 7027's as has been said ore a 6L6 variant and a great tube. There are a wealth of designs out there for these.

7868 is a 9 pin 7591, a tube I'm very fond of. I would personally build a few amps around these, but they also have a bit of value if they're NOS on the secondhand market for owners of old Fisher and other amps.

mashaffer · 22nd March 2008, 11:03 PM

Nice heritage. I am waxing a bit green.

I find this site very useful..

Lotsa Data Sheets

mike

22nd March 2008, 03:15 PM	#1
dp63130 diyAudio Member Join Date: Mar 2008	The old man told me to get it all out of the basement Howdy, newb here getting ready to build his first rig, thinking the bottlehead might be the best option after reading some threads. Anyway, my Pop was a hobbiest and told me to start pulling things out of the basement, tons of good stuff but the first things I grabbed were a few boxes of tubes, transformers, caps, etc... I grabbed about 4 boxes(easily a couple hundred tubes) can anyone give me a little history lesson on these "Conn" tubes? looks like google is saying it was an organ company? There are a ton of GE and RCA tubes, just seems there are way more of the "Conn" type. He said they are all in good working order... Thanks

22nd March 2008, 09:18 PM	#7
GordonW diyAudio Member Join Date: Mar 2005 Location: Marietta/Moultrie GA	7027A = basically, a 6L6GC. One version of about the most ubiquitous output tube EVER. With 40 of those, you can build WHATEVER YOU WANT. Regards, Gordon. __________________ Speaker Design, Restoration and Repair- since 1985.

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22nd March 2008, 03:51 PM	#2
nkg diyAudio Member Join Date: Jul 2004 Location: perth	You need to show what the printing on the glass is. nkg

22nd March 2008, 07:29 PM	#3
tubewade diyAudio Member Join Date: Jun 2007	You have a good assortment of valves to work with. Yes, Conn is an instrument manufacturer and all of the valves that say Conn would have come out of, or been intended for use in, an organ. They weren't manufactured by Conn, but most likely were manufactured by RCA, Sylvania, GE or Amperex.

22nd March 2008, 07:45 PM	#4
Ty_Bower diyAudio Member Join Date: Mar 2007 Location: Newark, DE	Cool find. Lots of small signal tubes, a bunch of rectifiers. I didn't notice too many power tubes, except for the 7868. How many of those do you have? Have you been to Duncan's tube data lookup page? http://tdsl.duncanamps.com/tubesearch.php

22nd March 2008, 08:24 PM	#5
dp63130 diyAudio Member Join Date: Mar 2008	Gotcha. http://s302.photobucket.com/albums/n...t=CIMG3468.jpg there are about 300 of these little Conn guys 12 AU7A Then running vertically they say 36 12 26 http://s302.photobucket.com/albums/n...t=CIMG3469.jpg there are maybe 40 of these large Conn 7027A http://s302.photobucket.com/albums/n...t=CIMG3473.jpg about 2 dozen of these mid sized Conn 7868 http://s302.photobucket.com/albums/n...t=CIMG3479.jpg no marking on these http://s302.photobucket.com/albums/n...t=CIMG3474.jpg Zenith -about 50 12AU7 b3b http://s302.photobucket.com/albums/n...t=CIMG3471.jpg http://s302.photobucket.com/albums/n...t=CIMG3480.jpg There are about 2 dozen of these GE ones it looks like they say 6DN7 Then on the lower plastic part it says RW 1885 http://s302.photobucket.com/albums/n...t=CIMG3469.jpg Thanks

22nd March 2008, 09:46 PM	#8
7n7is diyAudio Member Join Date: Mar 2006 Location: VA	From the RCA receiving tube manual. http://www.bonavolta.ch/hobby/en/audio/7868.htm http://www.mif.pg.gda.pl/homepages/f...049/7/7868.pdf

22nd March 2008, 10:58 PM	#9
Brett diyAudio Member Join Date: Jan 2002	Sell all of the 12AU7's. Horrible audio tube. Use the money for others. The 7027's as has been said ore a 6L6 variant and a great tube. There are a wealth of designs out there for these. 7868 is a 9 pin 7591, a tube I'm very fond of. I would personally build a few amps around these, but they also have a bit of value if they're NOS on the secondhand market for owners of old Fisher and other amps.

22nd March 2008, 11:03 PM	#10
mashaffer diyAudio Member Join Date: Jun 2004 Location: Indiana	Nice heritage. I am waxing a bit green. I find this site very useful.. Lotsa Data Sheets mike