User manual BLAUPUNKT MPA 680

[. . . ] Recommendation: A power amplifier's performance is only as good as its installation. Proper installation will maximise the overall performance of your audio system. 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. [. . . ] amplifier MPA 680 The amplifier is suitable for connection to car radios with Cinch connector. Use the Blaupunkt ISO Cinch adapter to connect the amplifier to car radios with ISO connector. (7 607 893 093/ 7 607 855 094) MPA 680 Quadro mode Max power Stereo mode Max power Quadro mode RMS power Stereo mode RMS power Tri mode Frequency response Crosstalk attenuation Signal-to-noise ratio Input sensitivity High-pass filter Low-pass filter Dimensions WxHxD (mm) Fig. Integral fuses The integral fuses within the amplifier protect the final stage and the entire electrical system in the event of a fault. 5/5a Car radios with 20-pole connector system: use adapter cable 7 607 893 093 . This enables the amplifier to be switched on and off with the radio's On/ Off switch. High-level inputs The amplifier is equipped with high-level inputs to permit connection to radios without preamp outputs (Fig. This enables direct connection to be made to the radio's loudspeaker output. Gain control The gain 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 gain control clockwise increases the input sensitivity of the amplifier , and thereby also the volume. The gain control is however not a volume control; an increase in volume is not achieved in the maximum position, even if this subjectively appears to be the case. The system merely increases the volume more quickly when the volume is turned up on the radio. Tri-mode loudspeaker connections MPA amplifiers can be used in a combined mono/stereo mode (Fig. This facility enables the amplifier to be uq°d simultaneously with stereo satellite speakers (mid-range and tweeter) and a mono subwoofer. The connections are somewhat more complicated in this case, as they require the use of passive crossover networks (not supplied with the amplifier) which divide the frequency ranges between the various loudspeakers. CAUTION: In tri-mode (combined mono/stereo mode) the amplifier must be presented with a load of at least 2 Ohms (stereo satellite speakers) or 4 Ohms (mono subwoofers). Lower loads cause overheating of the amplifier and may damage it permanently. [. . . ] Note: If the amplifier is to be used in the tri-mode configuration, the crossover frequency selector switch must be set to "Flat" in order to make the full frequency range available. If, for example, you wish to drive a pair of subwoofers, connect in accordance with the lowpass diagram, . MPA 680 Quadro-mode Max power Stereo-mode Max power Quadro-mode RMS power Stereo-mode RMS power Tri-mode Frequentiebereik Overspraakdemping Signaal-ruisverhouding Ingangsgevoeligheid Hoogdoorlaatfilter (High pass) Laagdoorlaatfilter (Low pass) Afmetingen bxhxd (mm) Fig. Därför är det viktigt att vid anslutningarna se till att förstärkarens plusledning (+) kopplas till högtalarens plusledning (+); samma sak gäller för minusledningarna (-). [. . . ]