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6LU8 in Moscode 600
6LU8 in Moscode 600
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Old 27th November 2010, 03:10 PM   #1
pforeman is offline pforeman  United States
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Join Date: Aug 2008
Default 6LU8 in Moscode 600

My moscode has 3 6dj8's 2 6fq7's and 2 6LU8's,
could someone enlighten me on the function of the 6LU8's.
Also is the central 6dj8 the first input tube (where to put the "best" tube).

If the 6LU8 isn't in the signal part of the amplifier, could the sound degrade without me hearing microphonics, or do I just gently tap it like other preamp tubes to find out if its out of life.
I live in Chicago (land) and there isn't any place that has a tube tester
I guess people just replace tubes when they think they're a decade old or so?
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Old 28th November 2010, 01:20 AM   #2
quinnling is offline quinnling  United States
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Join Date: Nov 2004
Location: Charlotte
The 6LU8 are used in the voltage regulators for the small signal tubes.
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