#1
just wondering, why are they covered with metal plate and power amp tubes not?
Originally Posted by Twist of fate
I thought the "clean" button was to clean out the inside of the amp automatically, so I never pressed it.


Originally Posted by DjBrandenburg
pedals are stupid
Last edited by Regensgeliebte at Aug 19, 2009,
#3
to shield them from outside noise. if the preamp tubes pick up any noise interference, all that noise gets amplified and will cause some unpleasant sounds to come from your amp. however, the shielding cans are not absolutely necessary, just there if you want them.
#4
Different brands use different strategies. I have all my preamp valves covered with a protective metal plate. I think it is mainly to keep them in place, as they come loose easier than poweramp tubes. The second reason would be to protect from noise.

*edit*

azn beat me to the second reason by a minute
WTLTL 2011
Last edited by Mark G at Aug 19, 2009,
#5
Quote by Mark G
Different brands use different strategies. I have all my preamp valves covered with a protective metal plate. I think it is mainly to keep them in place, as they come loose easier than poweramp tubes. The second reason would be to protect from noise.

you mean loose because of vibration?
Originally Posted by Twist of fate
I thought the "clean" button was to clean out the inside of the amp automatically, so I never pressed it.


Originally Posted by DjBrandenburg
pedals are stupid