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parabola66
PostPosted: Thu Dec 24, 2015 10:27 pm 
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Bottle Rocket

Joined: Wed Dec 23, 2015 9:53 pm
Posts: 2
Hey everyone,

I was looking at the manual to reach up on the functions of each tube in the Dual Rec. What I don't under stand is why the preamp tubes are split in 2. Meaning the V1 tube is split into V1a and V1b. Why is one tube split into two functions? Does this mean that it matters what pin holes the tube's pin go in, whether one side gets the extra pin, the A or the B side? (I have never switched tubes before so idk if it matters) circuitry wise.

Thanks!
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screamingdaisy
PostPosted: Fri Dec 25, 2015 12:20 am 
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Joined: Mon Jan 24, 2005 4:57 pm
Posts: 4491
Location: South of Heaven
A 12AX7 is made up of two separate triodes. Basically, it's two tubes in one. The socket is keyed so they only fit one way.

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