Alphard STU-12D1, Owner'S Manual

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1 . I N T R O D U C T I O N
Thank you for purchasing this AVATAR product, which committed to the creation of extremely high-profile systems with no
loss of quality.
To ensure proper use, please read through this manual before using this product. It is especially important that you read and
observe CAUTION’s in this manual. Please keep the manual in a safe and accessible place for future reference.
1. Fasten the subwoofer properly when installing it in the vehicle. If the component is disconnected during driving, it may
cause serious damage to the passengers of the car or another vehicle.
2. Before installing the components, if possible store the product in the package in order to avoid accidental damage.
3. Be careful when installing and dismantling the subwoofer! Do not let the subwoofer drop to avoid damage of its moving
parts.
4. When working with tools follow safety rules.
5. Before the installation switch off the head unit and all other audio devices to avoid their damage.
6. Make sure that the location of the subwoofer does not hinder the proper operation of mechanical and electrical devices of
the vehicle.
7. Do not install components in places exposed to water, excessive humidity, high or low temperature, dust or dirt.
ATTENTION!!! The product may be operated at +5 to +40 °C. In case of moisture condensation, allow the product to dry.
8. When drilling or cutting out holes in the body of the car, make sure that there are no cables or any other important
construction elements under a selected area or inside it.
9. When stretching back the speaker cables make sure that they are not in contact with sharp edges or moving mechanical
devices. Make sure that they are firmly fixed and protected over the entire length.
10. The diameter of the speaker cables must be selected in accordance with the length and applied power.
11. Never stretch the cables outside the car and near the moving parts of the car. This can lead to destruction of the insulating
layer, short circuit and fire.
12. To protect the cables use rubber gaskets if the wire passes through a hole in the plate, or other similar materials if it lies
close to the parts exposed to heat.
CAUTION!!! High sound pressure can damage your health!
Please use the common sense when controlling volume!
2 . S A F E T Y I N S T R U C T I O N S
3 . W I R I N G D I A G R A M S
C O N N E C T I O N O F T E R M I N A L S
S E R I E S C O N N E C T I O N
To t a l r e s i s t a n c e =
Ω
S u b 1 +
Ω
S u b 2 +
Ω
S u b 3 . . .
EN
3
Possible commutation versions are presented on the following pages. Using the data from the diagram below, check the
minimum resistance and the connection specified by the manufacturer of your amplifier. Do not expose the amplifier to loads
below the predetermined value.
Use these formulas to calculate the resistance for various types of connections.