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Herald1360 · 21st Jan 2019, 10:13 pm

GEC quoted idle current for 4 KT66s in cathode bias is around 220mA rising to around 280mA at full chat. HT is a bit lower than 480V though that figure is still within spec limits. If the amp is UL, currents go a bit higher.

21st Jan 2019, 10:13 pm	#15
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Grampian type 531 Amplifier GEC quoted idle current for 4 KT66s in cathode bias is around 220mA rising to around 280mA at full chat. HT is a bit lower than 480V though that figure is still within spec limits. If the amp is UL, currents go a bit higher. __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O