01-19-2018, 07:07 PM
I'm frankly surprised the 6L6G isn't in your manual for the reasons I mentioned in my previous post (used in 38-116, 38-690, 42-1015 and 42-1016).
You may sub the 6L6G with 6L6GA, 6L6GB, 6L6GC. Also 6L6WGC, 5881, or 7581 (the 7581 is equivalent to a 6L6GB; the 7581A is equivalent to a 6L6GC).
The KT66 has a higher filament current (1.27A) than the 6L6 series (0.9A).
The 6L6G has the largest envelope. 6L6GA is also taper-top or "Coke bottle" shaped but smaller than 6L6G. Starting with 6L6GB, the envelope became tubular, tapered at the bottom just above the base.
You may sub the 6L6G with 6L6GA, 6L6GB, 6L6GC. Also 6L6WGC, 5881, or 7581 (the 7581 is equivalent to a 6L6GB; the 7581A is equivalent to a 6L6GC).
The KT66 has a higher filament current (1.27A) than the 6L6 series (0.9A).
The 6L6G has the largest envelope. 6L6GA is also taper-top or "Coke bottle" shaped but smaller than 6L6G. Starting with 6L6GB, the envelope became tubular, tapered at the bottom just above the base.
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Ron Ramirez
Ferdinand IN
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