User manual HELIX HXA 20

[. . . ] Dear Customer, congratulations for purchasing this high-quality Helix amplifier, made in Germany. To find out how Helix amplifiers work best for you, read this manual carefully and follow the instructions for installation. We guarantee that this product has been checked for proper functioning before shipping. [. . . ] The plus cable from the battery for the complete system should be provided with a main fuse at a distance of max. Install the cabling in a manner which precludes any danger of the leads being exposed to shear, crushing or rupture forces. Never lay the power supply cables adjacent to leads and lines connecting other vehicle equipment (fan motors, fire detection modules, gas lines etc. In order to ensure safe installation use only high quality connectors and materials. The amplifier only turns on when the battery- and ground cables are connected first. 3 Connecting the ground cable The ground cable should be connected to a central ground reference point (this is located where the negative terminal of the battery is grounded at the metal body of the vehicle), or to a bright bare-metal location on the vehicle chassis, i. 4 Fuse The input fuse provides protection against internal equipment fault, i. The system must be additionally protected by a further line fuse located near the battery (max. 5 - 6 Signal inputs The HXA 20/ HXA 20X have RCA connectors for cinch cables leading from the preamplifier outputs, the line outputs of the head units or the outputs of a pre-amplifier/ equalizer, e. These connectors are gold-plated in order to ensure better signal transmission. 8 Yellow LED If the yellow LED is on there is a malfunction in the amplifier or a impedance less than 2 Ohms at the loudspeakers output. 10 Selector switch for channels A and B For switching the frequency crossover to highpass , lowpass or full range. 12 Switch for mono/ bridged and stereo With this switch the channels A and B (16) can be bridged to mono. In this case the total impedance of the connected speakers must be 4 ohm or higher. [. . . ] To connnect a subwoofer amplifier In general: Amplifier highpass channel A + B =RCA output 17 lowpass channel A =RCA output 18 lowpass channel B Amplifier lowpass channel A + B =RCA output 17 highpass channel A =RCA output 18 highpass channel B 11 Switch for selecting the frequencies range With this switch the adjustment range of the potentiometer 13 can be selected from 15 Hz to 1 kHz and from 1 kHz to 5 kHz. If you need further informations, please take a look at our web-site www. Power bridged into a 4 Ohm load Frequency Response Total Harmonic Distortion (THD) TIM Distortion Signal to Noise Ratio Input Impedance Input Sensitivity Fuse Dimensions (HxWxD) in mm Weight net HXA 20 Switchable Frequency Crossover HXA 20X Adjustable Crossover 2x60/80 Watts RMS/Max. [. . . ]