Incorrect standby and power switch sequencing will cause premature failure of filter capacitors and tubes. ... However, mismatching the speaker impedance (e.g. connecting a 4 ohm speaker to an 8 ohm output or vice versa), running an ... Regular audio output tube changes is one way to guard against the last scenario.
|Title||:||Vacuum Tube and Guitar and Bass Amplifier Servicing|
|Publisher||:||Bold Strummer - 1996-04-01|