The amplifier emits heat and needs proper ventilation to ensure long operational life.
Ensure that the amplifiers are installed in a location that is stable and well ventilated. If the
amplifier is placed in a built-in installation, ensure that there is adequate room for air to flow
through the ventilation openings. Allow at least 12 inches clearance on the top and around
the sides of each chassis of each amplifier. The warranty does not cover units that are
damaged due to overheating from incorrect installation.
Tiptoes or other isolation accessories may prove useful in reducing mechanical vibrations or other external
vibrations that might affect sonic performance, and we have found that such accessories can offer definite
beneficial sonic improvements when used correctly. In all cases you should be sure to install this amplifier in a
location that is stable, as warranty does not cover damage due to the unit falling.
Do not place the amplifier next to heat sources such as radiators, stoves or other appliances.
Do not place the amplifier where small children might be able to tamper with the equipment. If it is not possible
to place the amplifier out of the reach of small children it is recommended that you remove power cables when
the equipment is not in use.
Servicing
Do not attempt to service the amplifier beyond the procedures described in this manual.
For all other service and questions, please contact your authorized VTL dealer or the
factory.
Operational Warnings
It is critical for proper sonic performance of this component that it be properly
configured for the mode of operation while playing. If a balanced signal is
applied to the inputs the amplifier must be configured for balanced operation,
and vice-versa.
Always make all connections before powering the amplifier on. Connecting or
disconnecting the amplifier while powered on can damage the output stage, and will
not be covered under the warranty. Ensure that no interconnect cables can become
loose during use and that there are no intermittent faults with the cables.
Warning:
The S-400 Series II amplifier is a fully balanced design with a balanced output.
Care should be taken so that neither output is ever grounded.
Warning:
Do not connect a sub-woofer to the output of the amplifier unless you are sure
that the subwoofer input is fully balanced and that neither phase can become
grounded.
Please consult your authorized VTL dealer or the VTL factory customer support department if you have any
questions on the fully balanced connection of the amplifier.
S-400 Amplifier Owner’s Manual
VTL
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