cluded power cable is connected securely to the IEC Socket on the Rear Panel and the male 3-terminal plug
connected to a Grounded 3-Leg AC Wall Socket supplying proper voltage. US Domestic @ 117-120 Volts AC.
NOTE: WARNING!
Never alter your Power Cable in any way! Doing so will void your warranty and put you at risk
of electric shock.
From a cold state, always follow the Cold Start procedure below so that cold power tubes and their filaments
have a chance to warm up before being hit with high voltage. Doing so will prolong the toneful life of your tubes,
especially your power tubes, but it also doesn’t hurt - and if anything helps - even your preamp tubes last longer.
COLD START PROCEDURE
1.
Flip POWER To “ON”
2.
Wait (at least) 30 Seconds to allow tube filaments to warm up.
3.
Flip Standby to ON.
It is wise to do this every time you have let the amplifier cool for any length of time.
STANDBY
As mentioned above in the POWER section, the STANDBY provides a warm-up/idle state for the tubes – and
also a Mute of any sound – in your amplifier. It should ALWAYS be used at power up, even if the amp’s chassis
is warm to the touch from recent use. This is in part because tubes cool far more quickly than other compo-
nents, and even when they are warm, it is far easier on them to have 30 seconds of warm-up time before they
are hit with the high voltage.
The STANDBY also doubles as a mute feature for set-up before and breaks during a performance. Use the
STANDBY any time you are pausing from playing and want to keep your amplifier in a warm and ready state.
If you’re going to take a break for a couple hours, it’s probably best to power down to save electricity, just be
sure to use the Cold Start Procedure (listed under the POWER instructions above) when you return and want
to power back up and use the amplifier again.
NOTE:
The following information is also found in the Troubleshooting Section in the rear of this Manual, but since
the STANDBY is a helpful tool in tube swapping, here’s a little preemptive troubleshooting tip and knowledge
that you might never need but is good to know as a tube amp owner.
STANDBY: Tube Issues/Troubleshooting
Should you ever flip the STANDBY to ON and hear a loud hum, loud static, or should you smell something hot/
burning, quickly flip the STANDBY to OFF. What you could potentially be hearing (or smelling) may be a power
tube arcing or shorting.
While this is rare, it can happen if a power tube were to become faulty. Though less common, in some cases, a
faulty power tube can cause the tube it is paired with to run away and become faulty or red hot in the center as well.
In the event this ever does occur, flipping the amplifier to STANDBY stops the incident right away. On occasion,
it will correct the problem, but often if the tube has a problem it will reoccur. You can troubleshoot and correct
the problem (with some spare known-good tubes) using the STANDBY switch and the method outlined below:
While looking at the Rear of the amplifier and watching the power tubes (you may need to move the Tube Cage
by unhooking the nylon clips and moving it out of the way or removing it altogether), flip the STANDBY to ON.
If a power tube(s) is arcing or shorting, you will likely see it flashing brightly rather quickly, or if “running away,”
perhaps glowing red hot in the tube’s center metal parts more than the rest of the set. As mentioned above, on
occasion, an arcing or shorting tube can pull its paired counterpart out of bias and cause it to run away as well.
Regardless, flip the STANDBY to OFF.
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