User manual HELIX HXE 100

[. . . ] Your dealer will also be able to provide you with assistance in selecting the other components of your system and will be happy to advise you in relation to relevant technical safety and sound-related aspects. The Parametric Equalizer HXE 100 is a product of the very highest standard, offering the very best in technical precision to ensure that you enjoy optimum sound reproduction. Description The HXE 100 can only be installed if the car radio/head unit exhibits a stereo line output. The HXE 100 distributes the incoming signal to separate stereo outputs for front and rear amplifiers (or 4-channel amplifier with 4 inputs). [. . . ] Make sure that it is firmly fastened in position (using the enclosed fixing materials) and that there is sufficient space for connecting the cables to the rear of the unit. In addition, the HXE 100 should not be installed too close (leave at least 15 cm) to sources of interference such as the ignition coil. As the unit does not require any special cooling, it can be located where space is tight, subject to the above conditions being met. Before commencing the electrical connection work, disconnect the negative terminal of the vehicle battery and, Now connect the black wire of the power supply plug to the common ground (chassis) connection of the car radio. The red wire provided with a fuse should be connected to a steady positive + 12 Volt pole. connect the remote wire to the antenna plus (aerial positive) output of the radio. Now connect the outputs to your amplifiers (front panel output to the front amplifier, rear panel output to the rear amplifier). If you have a separate amplifier for your subwoofer, connect the subwoofer output (SUB Output) to it. In order to avoid ground leakage, ensure that the external contacts of the cinch connector do not touch the unit chassis. Settings Determine the maximum signal output voltage from the technical documentation relating to your car radio (CD player etc). Set the individual input gain controllers in the cover of the unit accordingly. If there are doubts, first turn these controllers fully counter-clockwise and then open each channel during system operation until, with the volume control of the HXE 100 at maximum output, all distortion is eliminated and all the downstream components are properly protected. The concealed controls for the cutoff frequencies should first be adjusted using the screwdriver supplied so that all the channels are identically set at the mid position (i. The associated volume controls should also be set to their central position, i. Set your subwoofer crossover to the filter frequency required for the subwoofer type employed (in most cases this will be 60 - 100 Hz). The volume control should first be turned fully counterclockwise (quiet). After you have made sure that all the plug connections and all the other components of the hifi system have been correctly fitted, switch on the system and carry out an audio test, initially at low volume. subsequently , increase the volume to maximum by turning the volume control clockwise. If distortions should occur as the volume increases, turn the input gain controls fully counter-clockwise as described above. With the volume control at maximum, determine the maximum gain by gradually turning the input gain controls in a clockwise direction. [. . . ] By using the concealed cutoff frequency controls, you can now start to fine-tune the music output. For example, with the SUB control the preset cutoff frequency (see drawing) can be adjusted from +18 dB to -18 dB (i. This enables you to eliminate any unpleasant resonance with the vehicle body, and also to raise smaller woofers in the bass range. Similarly, the HXE 100 can be used to perform corrections in the other frequency ranges. [. . . ]