how hot should a tube get?

[nutxo]

how hot should a tube get? I mean like scalding hot or just warm to the touch?

[dancindave]

preamp is almost touchable, power tubes are hot as f@ck!!

[nutxo]

thnaks for the quick reply

[novemberrain]

If the glass shell melts the tube is too hot.

If your fingerprints singe on to the side of the tube it's too hot.

Seriously, if the tube red plates and you leave it that way long enough it can actually soften the glass, been there, done that!

Same with leaving a couple layers of skin on the side of a tube. All the major tube manufacturers used to supply little rubber sheaths to techs to pull tubes with, it saves burnt fingers. I still have a couple dried out Sylvania and Zenith pullers somewhere.

[nutxo]

I replaced the tube and the old tube reallly really brought out the sound. Alas the amp is still doin it though.

[Trout]

This one must have been a degree or 2 over the allowable limit


I have seen worse, but still a good example

[nutxo]

This one must have been a degree or 2 over the allowable limit


I have seen worse, but still a good example

sweet

[Michael]

how hot should a tube get? I mean like scalding hot or just warm to the touch?

This is about how hot power tubes get under NORMAL operation:
http://www.charlestongolf.com/EL84_burn.jpg

And see this closeup:
http://www.charlestongolf.com/EL84_burn2.jpg

Be careful,
Michael

[dnichols]

Michael:

The close up shot is awesome........
D.

[Michael]

Michael:

The close up shot is awesome........
D.

Thanks D. Man, I had no idea my arm was so darn harry

[novemberrain]

This is about how hot power tubes get under NORMAL operation:
http://www.charlestongolf.com/EL84_burn.jpg

And see this closeup:
http://www.charlestongolf.com/EL84_burn2.jpg

Be careful,
Michael

Yah! I know a muffler burn from a Harley when I see one! That's what ya get when ya drop yer smoke under yer scooter and reach fer it wifout thinkin'! Nice "Mullard" photoshop job, though.

I once gave some skank a ride around the block, she called me back a couple days later lookin' fer money 'cuz supposedly she melted her stockings to her legs on the pipes. Turns out her rent was due...