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Old 5th July 2013, 09:57 PM   #3181
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Quote:
Originally Posted by Drewaudio View Post
Mmmmm....maybe I should sell me NOS collection of 26's....

Andrew
Hello Drew,
Are you selling? I bought a pair of 26 NOS/NIB from a fella in Auckland just recently. Unfortunately, one from the pair is a dud. I am glad that the seller will replaced it with another once I sent him the proof that the tube in question was very weak.
Please PM me if you are selling. Maybe I can afford the tubes you are thinking of getting rid off.


Abe
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Old 5th July 2013, 10:14 PM   #3182
TheGimp is offline TheGimp  United States
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Some of the tube prices now days are getting crazy, but it makes sense.

Even though 300Bs are being made today, teh original NOS are going at a big preamium.

Most of these tubes are not in production today and unless someone starts making them the supply will eventually go away.

It's too bad the chinese manufacturers don't seem to be able to compete with 1930 technology at a reasonable price.

Maybe when 26s get expensive enough they will step in.

Until then, expect prices to keep going up.

The big isue I see is the low availabiltiy tubes like 01A, 31, 41, 42, etc that are fun to play with but will probably never have the popularity of the 26, 45, 300B etc, that promotes new production.
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Old 6th July 2013, 04:44 AM   #3183
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The prices are rising if people get stupid and making big big reserves
at home...The 26 will last at least 2-3 years a pair and there is no need
for you to buy a lot of them!!! I know that they will produce new 26 tubes,
emission labs will do so...So no rush....please people!!!!!!!!!
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Old 14th August 2013, 12:24 PM   #3184
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Hello,

today I first powerd my 26 pre amp and it sounds ok,
but there is a slight hum when in front of the speakers (95dB),
I am using Rods filament supply and CLCLC 50H filtering,
is this normal for 26 or shuld I put a CCS in front for the B+?
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Old 14th August 2013, 12:27 PM   #3185
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Could you post your schematic including PSU?
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Old 14th August 2013, 12:39 PM   #3186
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Ok. I will need to draw it...
But 1meter away I can hear nothing...
I will need to looks for magnetic coupling from other devices,
I have all my components open and testing, so It can be only that...

Will keep you posted...
On sound the 26 is really something special, so sweeet...
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Old 14th August 2013, 12:53 PM   #3187
stajo is online now stajo  Sweden
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My money i on ground hum. Check the grounding, or visualize it here
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Old 14th August 2013, 12:54 PM   #3188
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Can be also, I will check and report back...
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Old 14th August 2013, 12:57 PM   #3189
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Also some pics will welcome.
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Old 14th August 2013, 01:01 PM   #3190
euro21 is offline euro21  Hungary
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This is my #26 pre wiring scheme.

Two box layout (1m distance). The PSU box contains 250V (CLCLC) raw supply, the two SSHV2 (220V), and two 15V DC heater raw supply.
Attached Images
File Type: jpg #26 preamp wiring.jpg (57.5 KB, 299 views)
File Type: jpg HT raw supply.jpg (29.2 KB, 284 views)
File Type: jpg LT raw supply.jpg (56.5 KB, 282 views)

Last edited by euro21; 14th August 2013 at 01:09 PM.
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