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Reliability on Tubes Amplifiers and Prevention

Tubes amplifiers wired are more reliable than tube amplifier were tubes are mounted on circuit board; however can good ventilation helps prevent to have problems with this amplifier on the boards? This will not prevent to have other regular problems. But a good quiet fan on the side of the amp should kip it cooler so should help to prevent problems on the circuit board.
RIGH or WRONG?
Or the heat produce by the tubes steal will affect the board?
Now in the other hand. What other regular problems will we find on tubes amplifier? And how can we prevent them?
Thank you
Paulo
pauloramirez

Showing 2 responses by porziob

porziob
316 posts
 
Who claims tubes wired directly to the pins are more reliable than tube sockets on PC boards? A fan is always a good idea w/ tubes. As far as potential problems tubes are more apt to pass DC, more susceptible to RFI & noisier.
porziob
316 posts
 
If direct wiring the tubes is better, why doen`t Audio Rearch, Conrad Johnson, VTL, Manley & almost all other hi end tube mfgs. direct wire the tube pins. The only way to eliminate excessive heat is to eliminate the pwr. tubes. If these cos. don`t buy into your line of reasoning or the very few cos. that direct wire, why should I? I prefer the solid engineering approach of the cos. I cited. Maybe someone will agree w/ you. Good luck & good listening.
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