i luvmusic 2
Headphoneus Supremus
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- Aug 27, 2013
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I just got my 6HM5(Yugoslavia)it sound really good but when i turned on my LD 1+ i saw a SPARK from the bottom of the tubes. Is these normal?
If you mean it kinda flares up on power up that is normal.
Hi i luvmusic2,
Please read post 3544 on page 237 from one of the members on this forum. The flash is a quick heating up feature for military applications and normal for this specific tube.
Hi i luvemusic2,
Go to page 77 post #1154. The column on the left with the heading EF95 lists all plug and play tubes on the EF95 setting with a green yes.
To the right of this column is a column labeled EF91/92. Any tube with a green yes under this heading is plug and play using the EF92 setting on the amp.
The following power tubes are plug and play (the big tubes in the back of the amp):
6N6, 6N6P, 6N6P-i, 6N6P-IR, 6H30, 6H30-DR (the last two tubes only with circuit revision v.2)
6CG7 and 6FQ7
Which driver tubes do you like the best?
Granted, but the question asked was which tubes work plug and play without any modifications.
Need an answer to the following:
With the 6CG7 tubes the octal driver tube I am using runs much hotter than with the IR tubes. The plate voltage is 173V, which is higher than what I measured in the past with the IR tubes - around 147V.
Could it be that such a high voltage is detrimental to the tube? (Heater voltage is 6.3V and grid voltage is 1.33V).