I have a question for all of the tube gurus here at diytube...
I recently purchased a Fender Bassman 300 Pro tube bass amp (6 x 6550). This amp has a switchable 8/4/2 ohms output transformer. I have a 6 x 10 cabinet with a 5.3 ohm impedance. My question is which setting should I use to operate the amp safely into the 5.3 ohm load? I've read that tube amp output stages don't like the impedance to be higher than they "expect" to see, so I'm leaning toward using the 8 ohm setting. That said, 5.3 ohms is not much more than 4. I just want to be safe and not damage the amp or its output transformer.
Thanks in advance!
-Eric