User manual HELIX DARK BLUE 12 DATASHEET

[. . . ] 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 petrol 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. 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. [. . . ] an area which has been cleaned of all paint residues. 2 Connecting the remote lead The remote lead is connected to the automatic antenna (aerial positive) output of the head unit (radio). This is only activated if the head unit is switched ON. Thus the amplifier is switched on and off with the head unit. 3 Connecting the battery cable Connect the +12 V power 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. 5 Speaker terminals To connect the speaker cables. See figures on page 7. 8 Bassboost control To raise the bass signal from 0 to 18 dB at 45 Hz. 14 Switch full range and high pass channel 1 and 2 7/15/16 Level controls for input sensitivity These controls can be used to match the input sensitivity of the individual channels to the output voltage of the connected head unit. These controls are not volume controls and are solely intended for the purpose of sensitivity trimming. The control range extends from 300 mV to 6 V. e) Consoquential damages to other equipments. f) Reimbursement when repairing damages by third parties without our previous permission. 9 Frequency control for channel 5 To control the frequency of subwoofer channel 5. 10/12 Frequency controls for channel 3 and 4 Control 10: To adjust the low pass filter between 50 Hz and 4 kHz. Control 12: To adjust the high pass filter between 50 Hz and 4 kHz. Never connect the loudspeaker cables with the car chassis gound. Ensure that the loudspeaker systems are correctly connected (phase), i. e. Exchanging plus and minus causes a total loss of bass reproduction. The plus pole is indicated on most speakers. The impedance per channel should not be lower than 2 ohm as overheating could cause a shut down of the amplifier. 6/20 Signal inputs The HELIX DBamplifiers have RCA connectors for RCA cables that can be connected with the pre-amplifier output of the line-outputs of the headunit or with a pre-amplifier. This connectors are goldplated to ensure a better signal transmission. 7/15/16 Level controls for input sensitivity These controls can be used to match the input sensitivity of the individual channels to the output voltage of the connected head unit. These controls are not volume controls and are solely intended for the purpose of sensitivity trimming. [. . . ] 2 x 180/360 Watt + 1 x 250/500 Watt RMS/Musik Frequenzbereich . 10 Hz - 30 kHz Frequenzweiche: Tiefpass, bei 24 dB oct. 50 Hz - 4 kHz, 40 Hz - 400 Hz Hochpass . 50 Hz - 4 kHz Bassboost Pegelanhebung Kanal 5 . [. . . ]