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04/19/24 at 23:29:28

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Changing the input tube in my 25th Anniversary Amp (Read 2873 times)

Alex Seasoned Member Posts: 134	Changing the input tube in my 25th Anniversary Amp 01/02/21 at 13:40:56 Hi folks, On my Anniversary Amp I’m thinking about replace the input tubes with rsd ecc83 tubes. Might anyone know if this would be ok? I don’t want to use a tube that could blow up in the amp. Thanks folks.
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Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 23464	Re: Changing the input tube in my 25th Anniversary Amp Reply #1 - 01/02/21 at 14:05:51 I don't think you would harm anything, but this is the same as a 12AX7 and I don't believe it will give you much in the way of volume or linear sound. I wouldn't recommend using it.
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Alex Seasoned Member Posts: 134	Re: Changing the input tube in my 25th Anniversary Amp Reply #2 - 01/02/21 at 15:26:35 Thanks Lon
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Steve Deckert

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Re: Changing the input tube in my 25th Anniversary Amp
Reply #3 - 01/03/21 at 03:33:34

Using a 12 volt tube in amplifiers designed for 6 volt tubes will result in the heater of only one of the two triodes being energized. This will make the other triode weak in output since it's own heater is not lit.

Stick with 6922's, 6DJ8's, 7DJ8's, 6N1P's, 6N5P's. The first three have many NOS manufactures to explore. Make sure you get yourself a socket saver before you start rolling.

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acousticsguru Verified Member Posts: 9	Re: Changing the input tube in my 25th Anniversary Amp Reply #4 - 04/14/21 at 21:46:36 What about 6N23P and 6N23P-EV? Thanks! Greetings from Switzerland, David.
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spyder1 Ex Member	Re: Changing the input tube in my 25th Anniversary Amp Reply #5 - 04/14/21 at 23:54:57 The 6N23P and 6N23P-EV are Russian substitutes for 6DJ8 and 6922 vacuum tubes. They will work fine as input tubes in SE84UFO amplifiers.
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