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Jazzmaster Jake

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  1. Would there be any pitfalls in swapping output transformers with Hammond 1627SEA? Same impedence on the primary (2.5k). Primary inductance is 20H vs the approximate 10H of the 125ese. I’ll attach the link to hammonds info below. As it is, I see the spec sheet for the 125ESE warns to use this series use the 1627-1640 trannies for “HI-FI” 20-20khz output. http://www.hammondmfg.com/1627.htm cheers, Jake
  2. Thanks Maynard, don’t currently have a spare 50L6 equivalent on hand, but sure I can find something to find the bill in ‘the bucket of misfit valves’. Will keep you posted for sure. Thanks again, Jake
  3. Unless I’m wrong, It doesn’t seam anybody has tried to build this yet. So i’m gonna five it a go since i have many of the parts needed floating in “extras” boxes around here. The only issue is i don’t need to build a Stereo unit, as i only need a mono-block amp for a mono bedroom rig. So to make a mono-block version, what change to the hearter resistor R15 to only feed one valve. Are there any other alterations I should make that I’m not noticing to the power supply? thanks much, Jake
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