Owner`s manual

3
The Viceroy will work with a 16 or 4 ohm cabinet with the following caveat - you will lose
a little power from the impedance mismatch, and the power tubes will have to work a bit
harder and thus age faster.
To run an external cabinet, turn the Viceroy OFF, unplug the internal speaker (combo amps)
and plug in the external cabinet’s speaker cord. Alternatively, a “Y” speaker cord can be
used to run an 8 ohm external cabinet along with the internal speaker(s) of a combo amp
without damage to the amp (the total impedance or speaker load in this case will be 4 ohms
– see the previous paragraph).
Damage will result from operating the Viceroy without a speaker load.
Footswitch Jack – The Boost can be turned on and off using the lighted footswitch included
with the Viceroy. The jack for the footswitch is on the bottom of the chassis between the
third and fourth preamp tubes (see
Chassis Diagram). Plug in the footswitch while the amp
is off or in Standby, otherwise a loud pop will result. Connect the footswitch using the ¼"
stereo cable included with the Viceroy.
Biasing your Viceroy
The Viceroy is a cathode bias (self bias) amp and as such does not require a bias adjustment
when changing tubes. Please use well-matched pairs of output tubes for maximum clean
power; however, the unique design of the Viceroy output section allows use of unmatched
tube pairs as the amp tends to balance out tube differences. The Viceroy can only use pairs
of 6L6, 5881, or 7581A power tubes.
Carr Amplifiers selects and tests the finest current production tubes specifically for each
amplifier model. Caution should be used when buying replacement tubes from any dealer
who does not have a return policy as all tubes can have problems (NOS tubes are
susceptible to microphonics and failure too).