GENERAL RECOMMENDATIONS
Audison would like to thank you for choosing this product.
Before the information relative to its use, please carefully read the safety norms you have to respect in order to
avoid unpleasant inconveniences and to get the best enjoyment.
WARNING!
• Do not remove the cover in order to reduce the risk of serious technical inconveniences.
• Please apply to qualified staff for every necessary intervention inside the amplifier.
• For safe driving, we advise to listen to music at a volume level which won’t draw external traffic sounds.
WARNINGS
INPUTS: If the source does not share the output ground with the chassis and if you hear parasite noise, the
braided shield of the shielded cable has to be connected to the source chassis.
OUTPUTS: Never connect –R and –L outputs to ground or to each other. If a crossover filter is used, be sure its
two channels do not have a common ground.
ADJUSTMENTS: Please act as follows in order to calibrate the amplifiers level in the right way:
- Select the most suitable sensitivity range (0.15÷1.5V or 0.5÷5.0V) to the source you want to use through the
proper switch.
- Turn the amplifiers level controls towards minimum sensitivity (range ref.: 2).
- Put the source volume control around 3/4 of maximum level and start a very dynamic musical track.
- Turn the amplifiers level controls towards maximum sensitivity (range ref: 10) in order to cause the intermittent
lighting of the proper saturation leds (peak).
In multichannel amplification, levels adjustment must be optimised in order to get the maximum balance between
the different ways of the system.
PRECAUTIONS
WARNING!
This amplifier must be exclusively used into vehicles and boats with 12 Volt power supply in direct current (12V
d.c.), with negative to ground. It is IMPORTANT NOT TO USE any other kinds of electric power supply in order to
avoid fires or possible electrocutions.
Do not use VRx if temperature is below
0˚C (32˚F) or above 55˚C (131˚F).
Do not use VRx in case of extreme humidity
conditions (<10% or >90%).
Do not make VRx touch liquids.
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Do not put heavy objects onto VRx.
Do not cover VRx heat sink and do not
obstruct its cooling ducts.
Avoid to install VRx in dusty or dirty places.
VRx2.150
VRx2.250
VRX2.400
2000
EDITION
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