4
These have been provided throughout the Velocette range so that the user can connect them
to external 16
Ω
speaker cabinets, such as 4x12s, for different sounds. This is useful for both
live and studio use and will radically change the sound and volume of the amplifier.
As the Velocette Twin has two power stages two external speaker outputs are provided, as is
a 8
Ω
or 16
Ω
impedance selector switch which sets the output impedance for both sockets.
(N.B. This does not change the impedance of the internal speaker connection)
When a jack is inserted into each socket the corresponding internal speaker is disconnected,
either or both can be used at once.
However, always ensure that the amplifier is correctly loaded when in use and never plug both
power sections into the same speaker cabinet unless it is a stereo cabinet and you are sure
that the speakers are separately addressed.
Probably the most popular way to use these outputs is to sit the unit on top of a stereo 4x12
cabinet, such as our GSC412, set the switch on the Velocette Twin to 8
Ω,
the cabinet to
8
Ω
STEREO and connect the two speaker outputs to the two cabinet inputs for a big stereo
sound.
Alternatively if you really want to create an impression set the Velocette Twin to 16
Ω
and get
TWO 4x12’s, set to 16
Ω
MONO, to plug into. With the cabinets spaced apart a reasonable
distance the sound is huge! Especially considering that the cabs are being driven by two
fifteen watt amps. Adding a stereo chorus or delay to the effects loop at this stage is quite
simply more than a poor boy can take!
POWER SWITCH (OFF
/
STANDBY/ON)
As the name implies, this switches the amplifier from OFF to STANDBY mode, where only the
valve heaters are on, to ON for actual use. This should be used correctly every time the unit is
used to prevent problems with valves and to increase their life.
Before mains is applied to the unit, check that it is the correct voltage and make sure the
POWER switch is in the OFF position. Connect power lead to mains outlet then switch to
STANDBY and wait about a minute before switching to ON. This will ensure that the valves
have time to warm up before large voltages are applied to the plates. During short breaks the
amplifier can be switched to standby and will therefore be ready to play when next needed.
After switching off it is recommended, as with all valve amplifiers, that it does not receive any
sudden physical shocks while the valves are still hot, i.e. through moving the unit. If possible try
to give the amplifier a few minutes to cool down before transporting it.
IEC SOCKET/MAINS FUSE
The IEC socket is for connection to universally used IEC mains leads to connect to
appropriate domestic mains supply.
