Does it matter what ohm speaker while biasing?

[kiteman]

I biased my amp while plugged into my 16 ohm cab but the amp is 8 ohm with an 8 ohm speaker.

Does that make a difference while biasing?

 

[jim p]

The bias on an output tube is its DC operating point so the load on the secondary side of the transformer will have no effect on the results when using a volt or current meter to set it (Because a transformer will only pass AC signals). Even if you were using a scope to check for crossover distortion I don’t think the load on the secondary would have much effect.

Just to add you do need a load on a tube amp even a mismatch within a factor of two a resistor instead of speaker ect.

 

[kiteman]

Thanks. That's a relief.