User manual HELIX H500

[. . . ] You should be aware of the fact that such components may also be concealed in the doubleskin trim panels/mouldings. General instruction for connecting the amplifiers The HELIX amplifiers may only be installed in motor vehicles which have a 12-volt minus pole connected to the chassis ground. Any other system could cause damage to the amplifier and the electrical system of the vehicle. The plus cable from the battery for the complete system should be provided with a main fuse at a distance of max. [. . . ] Setting C Cinch socket 21 is connected with the parametric equalizer, but without the active crossover of the subwoofer amplifier. 17 - 18 Plug-in frequency crossover modules The H 500 ESPRIT is equipped as standard with an 85 Hz/12 dB Oct. Other plug-in modules compatible with all HELIX Precision Line amplifiers such as variable high-pass/low-pass frequency modules, are available on request. The individual functions of the frequency modules are visually displayed by colored LEDs. These have the following meanings for all modules: yellow = high pass, green = full range, red = low pass. If required the plug-in frequency crossover modules are available with a 28 Hz/18 dB Oct. 19 Selector switch for channels A and B For switching the plug-in frequency crossover modules to high pass, full range or low pass. 20 Selector switch for channels C and D For switching the plug-in frequency crossover modules to high pass, full range or low pass. 21 Cinch input and output The cinch socket is employed, as indicated in the description relating to Selector 16, either as a fifth input of the subwoofer amplifier (selector positions B and C) or as an output (selector position A). 22 Speaker connection terminals for channels A and B 23 Speaker connection terminals for channels C and D 24 Speaker connection terminal for the subwoofer This connection consists of two positive terminals and two ground terminals in order to allow a higher cable cross section or to enable two subwoofers to be connected in parallel. The impedance minimum of all connected loudspeakers must not be higher than 2 ohms (in bridged mode of the channels AB/CD, 4 ohms). With the use of ported woofer enclosures this value can be passed very easily. The plus pole is indicated on 1 Connecting the remote lead The remote lead is connected to the automatic antenna (aerial positive) output of the head unit (radio). 2 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. e. 3 Connecting the battery cable Connect the +12 V cable to the positive terminal of the battery. 4 Fuses The input fuses are connected in parallel and provide protection against an internal equipment fault, i. e. the system must be additionally protected by a further line fuse located in the vicinity of the battery (max. The fuse ratings are 2 x 30 amperes, and both must be installed as the amplifier protection rating is 60 amperes (2 x 30 A). 5 - 8 Signal inputs The H 500 ESPRIT has RCA connectors for cinch cables leading from the pre-amplifier outputs, the line outputs of the head unit or the outputs of a pre-amplifier/equalizer, e. g. These connectors are gold-plated in order to ensure better signal transmission. High power outputs of radios or similar units cannot be connected directly on the amplifier. 2 cinch leads connected), the inputs can be connected from A to C and from B to D by setting the selector switch to position 2. [. . . ] 29 - 31 CPS-Colour Protection System The LEDs show the operation status of the amplifier. Green (control 29) = O. K. ; yellow (control 30) = the speakers wires are shorted to ground; red (control 31) = over heated. If the amp shuts off due to overheating it will take some time (depending on the outside temperature) until it switches on again. 32 Bridge selector To run the satellite channels A+B and C+D in bridged mode, the control 32 must be setted at position B and control 9 at position 2. [. . . ]