* Introduction of Automotive Hi Frequency Audio Processing Module

The module product which improves the quality of automotive audio system is a new conduction technology developed by Ningbo WanBo New Material science& Technology Co., Ltd. The product fits all kinds of with the function to improve sound quality tremendously regardless of what type of sound system your car is using. This product works so perfect with our full-range automotive loudspeaker that you will feel yourself having a great time at a live concert.

* Operating instructions:

Pull out the original automotive CD/DVD sound system, connect its power line and the output line of loudspeaker with the audio frequency processing module, then insert and reset the CD/DVD sound system. Then replace the original front loudspeaker with KOY loudspeaker that matches the audio frequency processing module.

System index of the audio frequency processing module:

* Output: +15%

* Degree of Distortion: -0. 1%（1kHz）

* Signal to noise ratio: +1. 5dB（1kHz）

* Degree of dissociation: +3dB（1kHz）

* Frequency response extends to 20Hz-20kHz（1dB）

* Dynamic range: +3dB

* Caution:

Though our product is equipped with protection, please make sure to use electric current lower than 10 Amperes to avoid any damage to the system.

* Installation Manual：

1) Provide matching connection accessories to resellers according to various types of automotive sound systems.

2) According to the connection diagram or sound system connection wires, find out the power lines and 8 loudspeaker wires. Cut the positive wire and negative wire from the 1/3 position to the "Plug” and also 8 loudspeaker wires, then peel off the insulator to expose the 6mm bronze wire

3) Unscrew and open the sliver cover from both sides of the module, take out the audio module.

4) Connect the "Outlet” wires to the "IN” side of audio module, and connect the "Plug” wires to the "OUT” side of the module.

5) Pull the peeled-off bronze wire through the silver cover and insert into the corresponding module holes, then fasten the screw.

Positive power line connects with "+”, negative connects with "-”; the loudspeaker wire should be connected to holes 1-8 according to the connecting diagram. But the loudspeakers lines of the "IN” side and "OUT” side should match each other, otherwise the sound effect will be jeopardized.

Maintain the same sequence on the "OUT” side.

6) "OUT” side should follow the same connection method and the same sequence as the "IN” side.

(e. g. Hole No. 1 connects with green wire, hole No. 2connects with dark green wire. Same on the OUT side. )

7) Check to see whether the connection sequences on the "IN” and "OUT” side are the same, then close the silver cover, pull out the original sound system and connect with the module.

The reference table of general original sound system output line:

Black: grounding line

Yellow: firing line

White: positive electrode of front left loudspeaker

Dark White: negative electrode of front left loudspeaker

Grey: positive electrode of front right loudspeaker

Dark Grey: negative electrode of front right loudspeaker

Green: positive electrode of back left loudspeaker

Dark Green: negative electrode of back left loudspeaker

Purple: positive electrode of back right loudspeaker

Dark Purple: negative electrode of back right loudspeaker

Caution: The module output line should match the input line.

* Introduction of Full-range Speaker

KOY full-range automotive loudspeaker is a product developed based on originally created conduction technology, suitable for all kinds of vehicle types. Its main function is to promote the sound quality and strengthen liveness. After installing this product to the original automotive sound system, working with KOY automotive Hi frequency audio processing module, the sound quality will increase greatly, giving you the enjoyment of music like being at the live concert.

Technical parameter

Notes for installation

1) Before installation, test the phase of original vehicle loudspeaker with phaser;

2) Turn off the power of the original automotive CD/DVD sound system, carry out the operation flow according to the installation instruction;

3) The loudspeaker should be installed on the surface that is firm enough, to avoid resonance between the loudspeaker and the whole vehicle;

4) Ensure that all the thrums are in the wiring terminal. It is required that the uncovered electric wire won’t have short circuit and the loudspeaker wire (including wiring terminal ) is not close to the metal components of doors;

5) After installing the loudspeaker it is required to seal it;

6) After finishing installing the module and loudspeaker, use the phaser to test the phase of the loudspeaker;