Can I run the Spider Valve head with only the outer two power tubes (removing the inner pair) to operate at a lower output volume?
Yes, it is safe to run the Spider Valve Head with two 6L6s . It is recommended that the output impedance be run at “half” when running in this configuration. An example would be running the 8 ohm head output connected to the 16 ohm cabinet connection, or the 4 ohm output to an an 8 ohm cabinet connection.
Related Questions
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