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VIA Amplifiers
Operation
Connect Power to the amplifier
Connect a power source to the amplifier using a Neutrik PowerCon cable but do not switch the amplifier on until all input and
output connections have been made. The amplifier in a system should always be the last device turned on and the first device
turned off when shutting a system down.
Connect all input and output cables.
All speaker connections should be made with high quality speaker cable with a minimum cross‐sectional area of 2.5mm
longer runs the conductor area should be increased to 4mm
on Neutrik Speakon connectors, the other end of the speaker cable should have a connector to match the speaker. For installation
products such as Martin Audio Adorn or CDD, the cable can be left with bare ends. Ideally tin these or use crimped bootlace
ferrules to prevent stray strands accidently shorting the amplifier. The vast majority of portable loudspeakers also use Neutrik
Speakon so a Speakon to Speakon cable can be used.
Input cables should be balanced XLR using 3‐core cable with a shield. Most signal processing and mixing products also use XLR
connections, so the cable can be a male to female XLR or "microphone" cable.
Gain Controls
In many cases where the system is familiar the gain controls can be left all the way up (fully clockwise). If there is any possibility
of noise upstream of the amplifier it is advisable to turn the gain controls all the way down before powering the amplifier. The
level can then be carefully turned back up to make sure that the system is clear of unwanted noises. This will ensure no sudden
loud bursts of noise. In normal use the gain control should be used turned full up so that the amplifier gain is 32dB as specified.
If the amplifier is being used in a system with several bands; sub, low and high frequency for example, the relative levels of each
band should be adjusted within the system processor NOT by using the amplifier gains. System processor limiter settings depend
on knowing the gain of the amplifier and the VIA amplifiers will only operate with a gain of 32dB as published with the gain
control up fully clockwise.
Power The system
Turn all devices in the system on starting at the start of the signal chain and ending with the amplifier. If the gain controls on the
amplifier were turned down as a safety measure as mentioned above, they should now be turned fully up.
The system is now ready for use. You can use the amplifier gain controls as a temporary mute if required by turning them all the
way down fully anticlockwise.
VIA Amplifiers User Guide V1.0
USER GUIDE
2
2
or 6mm
for very long runs (up to 100m). The amplifier outputs are
2
. For
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