User manual HELIX HXS635

[. . . ] We would urge you to have the installation work carried out by an authorized specialist as verification of correct installation and connection is a prerequisite for warranty cover of the Helix amplifiers. Install your amplifier at a dry location with sufficient air circulation to ensure adequate cooling of the equipment. For safety reasons, the amplifier must be secured in a professsional manner. [. . . ] Before drilling the holes for the screws, carefully examine the area around the installation position and make sure that there Before drilling the holes for the screws, carefully examine the area around the installation position and make sure that there are no electrical cables or components, hydraulic brake lines or any part of the tank located behind the mounting surface ­ otherwise these could be damaged. You should be aware of the fact that such components may also be concealed in the double-skin trim panels/ mouldings. Instruction for connecting the amplifier The Helix HXA 40/ HXA 40X 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. 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. This is only activated if the head unit is switched ON. Controls and are solely intended for the purpose of sensitivity trimming. The operating mode can be selected with the switches 13 and 14. 12 Selector for signal inputs Position 1: If there is only one stereo signal provided, use switch 12 at position 1 only for the inputs A and B (only this input RCA connectors can be used at position 1). Position 2: In this position all four inputs of the amplifier can be used. On both positions the residual signal from channel C and D is applied at the RCA outputs 27 (C) and 28 (D). Example: HXA 40/ HXA 40X channel C and D highpass =RCA output 27 lowpass channel C =RCA output 28 lowpass channel D Position 3: Full active operating mode The HXA 40X can be used in this operating mode for a full active system. In this case the inputs A and B (only these can be used in this mode), controlled by the switches 13 and 15 with the use of controller 17, the frequencies for the speaker outputs A and B will be specified. The signal which is not processed from both channels (remaining signal from A and B) will be supplied to the channels C and D. At this channels C and D the remaining signal will be specified with the switches 14 and 16 and controller 18. [. . . ] At this channels C and D the remaining signal will be specified with the switches 14 and 16 and controller 18. The signal that remains of channel C and D is supplied to the RCA connectors 27 and 28 where it can be used for connecting an additional amplifier. Example: If A and B are used as highpass at 4 kHz, the frequencies up to 4 kHz are provided to the channels C and D. [. . . ]