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Post by guitarcory on Aug 4, 2012 14:02:53 GMT -7
Anybody know if I can put these in an EZG?
This is a write up thetubestore has... There are some important things to know about the reissue Tungsol 5881 tube before you decide to use it. The Tungsol 5881 is a 23 watt tube and is rated for a maximum plate voltage of 400Vdc. The many amplifiers that have higher plate voltage but use a tube rectifier can use the Tungsol 5881 tubes without issue. A prime example is the ’59 Bassman LTD. However it is also critical to rebias the amp heeding the 5881’s 23W rating. This will provide a vintage tone and less clean headroom. Leaving the bias set to a 6L6GC setting and/or using the Tungsol 5881 in a high voltage amp with a solid-state rectifier, will likely cause problems and are not covered by warranty. For these cases consider the Tung-sol 6L6GC-STR tubes instead. They are rated for 30 watts and 500V so they will hold up better. Their tone is quite similar to the 5881 too.
Thanks
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Post by zpilot on Aug 6, 2012 3:11:05 GMT -7
You need to just ask the guys at Dr. Z what the plate voltage is. Since it has a 5AR4 rectifier I would bet the plates are seeing around 365 volts. The EZG-50 comes with 6L6-GE power tubes and is fixed-biased at 35ma. You would need to have the amp re-biased to around 28ma. With a fixed bias amp you need to re-bias anyway when you put in a new set.
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