Does this sound like the sound of tubes going bad?
Got home tonight and powered up the stereo. (Separate power amp and preamp, both tube.) Last listened to it two nights ago. There was a loud, constant cracking noise coming out of the speakers... and when I disengage and engage the mute, I get a loud thump/pop out of the speakers. After 1/2hr warm up, the cracking sound went away.
My amp auto-biases. Amp and Preamp are 5 mo's old. Amp has 4 KT88/6550s, 4 12AU7, and 2 12AX7 tubes. Preamp has 2 12AU7 and 4 6DJ8/6922 tubes.
Thanks for your observation. |
