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6L6GC or 5881?

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  • #16
    The 7581 had slightly larger glass envelope (1-9/16-inch dia.) than did the earlier 6L6WGB (1-7/16-inch dia.), thus providing more surface area from which to dissipate heat from plate; however, no effect or change to screen dissipation.
    Last edited by Old Tele man; 07-22-2018, 02:23 PM.
    ...and the Devil said: "...yes, but it's a DRY heat!"

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