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Can a 5z4 tube be a metal bottle?

I did a thread on some tubes unfamiliar to me and recieved great info. The 5z4 rectifier seems to come in a metal and glass bottle from what I have seen thus far. I also wanted to know if the GZ30 tube would sub for the 5Z4. As always enjoy the music.
south43

Showing 6 responses by rodman99999

rodman99999
6,206 posts
 
I tried to respond yesterday, but my post didn't make it. YES- the 5Z4/CV1864 was manufactured with a metal envelope as well as glass. The CV1863 and CV2748/CZ30 were both designed to power up to 40 watts as well, and will replace it.
rodman99999
6,206 posts
 
Either of those would be good. Mullard made some nice ones too.
rodman99999
6,206 posts
 
People generally lump all the 5Z4, 5Z4G, 5Z4GT tubes together with the equivalent replacements (the CVs/GZ30). Mullard drop in equivalents are common:(https://www.tubeworld.com/5z3.htm) (http://cgi.ebay.com/Mullard-NOS-GZ30-5Z4GT-Orig-Gov-Box-Mullard-Made_W0QQitemZ220204720231QQihZ012QQcategoryZ73377QQrdZ1QQssPageNameZWD1VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247) (http://www.kraudioproducts.com/Mullard-Brimar/ProductDetail.aspx?CatID=65&ProductID=148) (http://www.mullardtubes.com/Mullard-GZ30-CV2748/?ID=0&ProductID=148)
rodman99999
6,206 posts
 
(https://www.tubeworld.com/5z3.htm) This URL didn't show up right.
rodman99999
6,206 posts
 
Guess you'll have to copy and paste that URL if you want to see Tubeworld's offerings.
rodman99999
6,206 posts
 
Enjoy your music!!
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