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In Reply to: curious about type 45 tubes posted by gjm on May 21, 2000 at 16:37:48:
The 45 tube is a power triode in the same class of tubes as the more powerful 2a3 and 300B. This is a tube that is no longer being made.The 45 specs at 2.5 volts and 1.5 amps. In single ended amps, one 45 as the output tube is good for 2 watts. Oh, but how glorious those 2 watts can be.
This is the favorite tube of many well-respected tube authority figures. Count Gordon of Wavelength Audio among just one....Wavelength Audio, Bottlehead, Sun Audio, and now I hear George Wright are some of the commercial companies producing a 45 amp.
Obviously, with 2 watts, careful matching with high efficiency speakers is a must.
Nice write up! I wouldn't go with a 45 amp unless I first obtained enough for a lifetime. First, I'd have to figure out how many that is. Any guesses?Regards,
-ken
That's a good question. If run 45s the way they were designed to operate, a pr. of 45s should last a good, long time. Early on I'd buy about 50-60 tubes thinking that I would need to replace them frequently. I have yet to replace a tube in any of my equipment. 12ax7s, 6sl7s, 300Bs, 6dj8s, etc... I got into tube testers just to be neurotic and check my tubes occasionally. Remember, in the old days, this stuff was made to last forever.I would think that if you have 2-3 nice prs, that you'd be set for a long time. It sometimes amazes me that people will spend 3-4k for a piece of equipment and concern themselves over 150/pr for output tubes. People should listen to whatever amps being considered within the context of their own systems. Then decide what is best based on personal tastes. Some people like single ended 300Bs, others like push-pull 2a3, yet others will prefer 45s or 10s. It's all speaker dependant and personal taste dependant. Me...I love them all.
Hell....the 1626 does great things for me. That's a 2 dollar tube!!
.
Sherwin,> > > Hell....the 1626 does great things for me. That's a 2 dollar tube! < < <
(Said in good humor) You just LOVE a cheap thrill :-{) .
Enjoy the music,
Steven R. Rochlin
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