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[Amps] RE GI7B issues

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Subject: [Amps] RE GI7B issues
From: "Roland AH6RR" <>
Date: Tue, 9 Sep 2008 15:08:29 -1000
List-post: <">>
What is the plate idling current? I had one of them do the same thing but the 
idling current was way too high. Bias voltage should be between 25-32V after I 
set my bias voltage to 27V I have been using the same 2 tubes in my MLA-2500 
for over 2 years now with 1.2 KW out. I used the stock fan and added a fan on 
top of the amp to draw the hot air out. My plate idling current is 100 mils at 
2600V for 2 GI7B Check out the Bias Voltage if it is too high it will smoke the 
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