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The old man told me to get it all out of the basement
The old man told me to get it all out of the basement
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Old 22nd March 2008, 03:15 PM   #1
dp63130 is offline dp63130  United States
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Default 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
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Old 22nd March 2008, 03:51 PM   #2
nkg is offline nkg  Australia
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You need to show what the printing on the glass is.
nkg
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Old 22nd March 2008, 07:29 PM   #3
tubewade is offline tubewade  United States
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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.
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Old 22nd March 2008, 07:45 PM   #4
Ty_Bower is offline Ty_Bower  United States
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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
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Old 22nd March 2008, 08:24 PM   #5
dp63130 is offline dp63130  United States
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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
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Old 22nd March 2008, 08:32 PM   #6
dp63130 is offline dp63130  United States
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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
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Old 22nd March 2008, 09:18 PM   #7
GordonW is offline GordonW  United States
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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.
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Old 22nd March 2008, 09:46 PM   #8
7n7is is offline 7n7is
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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
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Old 22nd March 2008, 10:58 PM   #9
Brett is offline Brett
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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.
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Old 22nd March 2008, 11:03 PM   #10
mashaffer is offline mashaffer  United States
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Nice heritage. I am waxing a bit green.

I find this site very useful..

Lotsa Data Sheets

mike
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