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and carefully sliding off the valve spring retainers. We recommend the use of a soft cloth
to remove valves if possible. The valves can then be pulled out using a slow rotational
movement, (dweezling) to ease them from their sockets. This will free them with the
least amount of effort and stress. Ensure that the key on the replacement valves lines up
with the keyway on the socket before carefully pushing them home. Take care when
removing any valve as the pins can easily be bent and the plastic locating key on the
output valves can be snapped off. Make sure that they are never more than a few
degrees from vertical to avoid bending or breaking pins etc.
Always buy matched pairs of output valves or Biasing may be difficult if not impossible.
To Bias the new valves, make sure the amplifier is connected to a speaker cabinet, (or
dummy load resistor). Turn all controls to zero and remove the guitar input as any signals
may interfere with the Bias settings. Switch to High power using the rear toggle switch
and then into PREHEAT mode using the front toggle switch. Wait 60 seconds and then
switch to ON.
Now put the black meter probe, (-ve) into the Black centre GND Bias socket and the red
meter probe, (+ve) into the left hand V6+ Bias socket. Using a small flat blade screwdriver
in the Bias adjustment POT, turn this so you get 34mV on the multimeter. This equates to
34mA of current per valve as we are measuring the voltage across a 1 Ohm resistor.
Now put the red meter probe into the right hand V5+ Bias socket and measure the
voltage. Try to balance the 2 measurements around 34mV with a maximum of 6mV
between them. For example, an extreme but perfectly acceptable case would be 31mV
for V6+ & 37mV for V5+.
All Victory amplifiers are constructed using Posidrive Screws & Machine Bolts. These are
an improvement on the Phillips type of fixing which uses a 4-blade screwdriver. The
Posidrive uses an 8-Blade screwdriver which allows for more precision and higher torque.
Please try to use Posidrive Screwdrivers when working on a Victory amplifier. These are
readily available from all good tool suppliers. We recommend having a No.1 and a No.2
point Posidrive screwdriver.
Speaker Outputs
PLEASE NOTE: The lightning flash with arrowhead symbol, within an equilateral triangle,
is intended to alert the user to the presence of uninsulated ‘dangerous voltage’ within the
product’s enclosure that may be of sufficient magnitude to constitute a risk of electric
shock. Terminals labelled as “Speaker Outputs” must be connected to a speaker cabinet
of the designated load rating using an un-shielded two conductor cable for speaker use at
all times during operation. Never use a guitar cable to connect the amplifier to a speaker
as this presents the amplifier with a ‘capacitive load’. This can cause instability or
oscillation which may seriously damage valves and/or the expensive output transformer.
