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popping sound with new 6922 tube

I am new in the tube world. I just replaced Siemens 6922 tube with Phillips. When I turn the preamp up for the first time in the morning, I get a popping sound (probably from tube) after a couple of seconds. A noise is delivered to speakers, too. Is it ok? Will it disappear as the tubes age? Or should I get a different pair? Thanks for your help.
misha2568

Showing 1 response by dopogue

dopogue
1,773 posts
 
I dearly love the Philips 6922s in my Raysonic CDP but they didn't work at all --
monumentally microphonic -- in a CJ preamp I had at the time. At least one
preamp manufacturer, Audible Illusions, recommends against using this tube.
What preamp do you have and why did you replace the Siemens?
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