Always use a grounded AC cord, and make sure that a proper ground connection is supplied
to the amp. Never attempt to lift or defeat the ground connection to the amp.
This fuse is in the compartment found below the AC receptacle. Replace only with type
indicated on the rear panel. If this fuse blows, it is most likely the result of a bad tube.
Constant blowing of this fuse (even when using new tubes) is an indication that something
could be seriously wrong with your amp. STOP. You amp will need to get diagnosed by an
Authorized Tone King Service Center or directly by Tone King.
This fuse protects the high voltage circuit. Only replace with Type and rating indicated on
rear panel. If this blows, don’t freak out too much. It’s most likely a bad power tube.
We recommend you carry a few spare fuses and a spare set of tubes when gigging.
When powering up the amp, you should start with both the Power and Standby switches in
the "off" position.
First, turn on the Power switch. This will apply power only to the tube filaments and the
low-voltage circuitry.
After turning on the Power switch, allow the tubes to warm up for about 1 minute, then turn
on the Standby switch.
The power-down sequence is not as important as the power-up sequence. When turning the
amp off, you may turn Power off before Standby, or turn Standby off before Power, or turn
them both off at the same time.
Connect the footswitch to the amp with the supplied cable, or with any standard ¼” mono -
to- ¼” mono cable. The footswitch allows you to control switch via foot between Channel A
and Channel B:
Channel switch: LED on = Channel B
Channel switch: LED off = Channel A
This rotary switch is used to match the output of the amplifier to the cabinet or cabinet
combination impedance in use. For proper attenuator level and sound it’s important to have
the proper impedance selected to match the cabinet (or cabinets) impedance used.
These ¼” jacks are where the speaker cabinet (or cabinets) are connected. The Royalist
MMKIII is designed to work with 4ohm, 8ohm or 16ohm speaker cabinets (or proper
combination). The rotary impedance select switch must match the speaker combination in
use.
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