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Old 25th February 2011, 12:02 PM   #1
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Default Building a 6s45P amp - transformer help

Hi,
Im building a SE 6s45P amp similar to this Singularity and have a couple of questions:

For a filament transformer I have a 12,7v lying around, would it be advisable to heat two tubes in series? Will individual tube differences cause drift?

For output transformers I am considering Edcor GXSE10-6-5K which is only 6ohm out. I am guessing that 6ohm output is a happy middle when I have several speakers ranging from 3,6 ohm to 6 ohm to 8 ohm.

Anode load is 5K, operating point 150v, 30mA
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Old 25th February 2011, 02:22 PM   #2
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Series wired heaters generally causes no issues - I have done it many times.

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Old 25th February 2011, 04:03 PM   #3
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Great, thats just what I needed to hear
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