User manual BLAUPUNKT GTA 450

[. . . ] Should you decide to install the amplifier yourself, however, please read through these instructions carefully, and take your time over the installation. Finally, a word about your health: please bear in mind when playing music in your car that sustained sound levels above 100 dB can damage your hearing and may even result in total hearing loss. Modern high-performance systems and high-quality loudspeaker configurations are quite capable of generating noise levels above 130 dB. Congratulations on your purchase of a highquality GTA power amplifier. [. . . ] The final stage must be installed professionally for reasons of safety. The mounting surface must be suitable for the screws provided, and must provide firm support. When drilling holes, take care to avoid damage to vehicle components (battery, cables, fuse boxes). The mounting location must also be dry, and provide sufficient ventilation for cooling of the amplifier. Use cable grommets when passing cables through holes with sharp edges. Use loudspeakers with an impedance of 2 to 4 (see table or installation drawing). Do not connect the loudspeakers to ground; only use the terminals provided. The cross-section of the positive and negative cable must be at least 6 mm2. Use the Blaupunkt ISO Cinch adapter to connect the amplifier to car radios with ISO connector (7 607 893 093/ 7 607 855 094). Positive/negative connection We recommend a cable cross-section of not less than 6 mm2. run a standard commercial positive cable to the battery and connect to the fuse holder. Use cable grommets when passing cables through holes with sharp edges. Bolt a standard commercial negative cable to a ground point free of induced noise (car body bolt, body panel) not to the negative battery pole. Clean the contact surface of the ground point down to bare metal and coat with antiseize graphite petroleum. Integral fuses The integral fuses within the amplifier protect the final stage and the entire electrical system in the event of a fault. Never bridge fuses or replace fuses with a higher current rating. This enables the amplifier to be switched on and off with the radio's On/Off switch. Level control The Level control enables the input sensitivity of the final stage to be matched to the output voltage of your car radio preamp output. Adjust the input sensitivity in accordance with the manufacturer's specifications when connecting the amplifier to other radios. important: Turning the Level control clockwise increases the input sensitivity of the amplifier , and thereby also the volume. [. . . ] Operating indicator (POWER / PROTECTION) Green lamp: Power amp on, regular operating condition Red lamp: Power amp has been switched off electronically, due to a fault or failure. If, for example, you wish to drive a pair of subwoofers, connect in accordance with the low-pass diagram (fig. Level reglering Med hjälp av Level regleringen kan slutstegets ingångskänslighet anpassas till utgångsspänningen för bilradions förförstärkarutgång. Därför är det viktigt att vid anslutningarna se till att förstärkarens plusledning (+) kopplas till högtalarens plusledning (+); samma sak gäller för minusledningarna (-). [. . . ]