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doc612
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Post subject: Need sub help- again  Posted: Mar Wed 14, 2018 3:39 pm |
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Joined: Feb Sat 28, 2015 10:50 pm
Posts: 831
Location: Decatur Alabama
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I just acquired a Silvertone 4485 that has a 6N6 as an output tube. What, if any, tube can I use as a substitute?
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AuroraOldRadios
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Post subject: Re: Need sub help- again Posted: Mar Wed 14, 2018 3:46 pm |
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Joined: Jul Sun 09, 2006 3:11 am
Posts: 7205
Location: Aurora, CO 80013
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A quick search of Ebay turns up many 6N6G tubes. No need for a sub.
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doc612
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Post subject: Re: Need sub help- again Posted: Mar Wed 14, 2018 4:00 pm |
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Joined: Feb Sat 28, 2015 10:50 pm
Posts: 831
Location: Decatur Alabama
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Well, I can get one from my radio club on Saturday. I was just working on it today and wanted to see if there was a possibility of getting it to play.
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AuroraOldRadios
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Post subject: Re: Need sub help- again Posted: Mar Wed 14, 2018 4:27 pm |
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Joined: Jul Sun 09, 2006 3:11 am
Posts: 7205
Location: Aurora, CO 80013
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pixellany
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Post subject: Re: Need sub help- again Posted: Mar Wed 14, 2018 6:28 pm |
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Joined: Jul Mon 26, 2010 8:30 pm
Posts: 29157
Location: Annapolis, MD
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One good place for subs: http://www.nj7p.org/Tubes/SQL/Tube_query.php?Type=6N6GNote that I had to enter 6N6 GDon't spend a lot of calories on this--Bob Dobush has 6N6s for $7 used / $12 new. (6AB6 is a different story--2 of my suppliers don't list it--I found one new one for $35)
_________________
-Mark
"Voltage is fun to watch, but it's the CURRENT that does the work."
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Norm Leal
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Post subject: Re: Need sub help- again Posted: Mar Wed 14, 2018 6:34 pm |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 30748
Location: Livermore, CA
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Use 6V6, 6K6 or 6F6 tubes. When you do this lift connection to pin #8 and add a 470 ohm resistor in series with this wire. Best if you also connect a 10 - 25mf @ 50 volt cap across the resistor. You can use the radio with any of these tubes if you don't have a 6N6.
Advantage of 6N6, didn't require the above bias components.
_________________
Norm
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