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In the Forum: Melquiades Amplifier
In the Thread: Single-stage Melquiades vs. DHT amps
Post Subject: The 2A3 loadingPosted by Romy the Cat on: 2/14/2009
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 drdna wrote:
It will be a little project to modify the amplifier, but it may be educational. To optimize the Moondog circuit for the NOS 2A3 tubes, so they will give their best, I plan to buy a new OPT with primary impedance around 3.5-4K.
Sure you might do it but if you are comparable with your transformer then it might be no need to order another OPT with higher primary. If you have multiple taps on secondary, which is most likely you have on a commercial amp then you can drive your 16R driver from 4R or 8R taps – you will have the same effect of unloading the 2A3’s plate. You might also to use some secondaryies sections (if you have access to them) as primaries…

The caT

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