Thanks, guys.
The tubes in question are Sophia Electric 6SN7s. I bought them new about three years ago. They've sat unused in their box for the last 14 months, though.
A couple more data points: the rushing air was two to three times louder through one speaker than the other.
Galen Carol was kind enough to let me try a used pair of Sophia Electric 6SN7s, and I get some rushing air through the speakers with those tubes in place, but they are listenable. The stock EH tubes have no detectable rushing air sound.
I'll see if Galen has a tube tester and report back. Thanks again!
The tubes in question are Sophia Electric 6SN7s. I bought them new about three years ago. They've sat unused in their box for the last 14 months, though.
A couple more data points: the rushing air was two to three times louder through one speaker than the other.
Galen Carol was kind enough to let me try a used pair of Sophia Electric 6SN7s, and I get some rushing air through the speakers with those tubes in place, but they are listenable. The stock EH tubes have no detectable rushing air sound.
I'll see if Galen has a tube tester and report back. Thanks again!