User manual BLAUPUNKT VPA 11500

[. . . ] When choosing an installation location, you should select one which is dry and which provides sufficient air circulation to cool the amplifier. Use cable grommets to protect cables against sharp-edged holes. Use loudspeakers with an impedance of 2-4 . Observe the maximum load rating (music power rating). [. . . ] If you want to connect it to car audio systems that are equipped with an ISO connection, please use the Blaupunkt ISO-RCA adapter. Power 2 ohms RMS power 4 ohms RMS power 2 ohms Frequency response Signal-to-noise ratio Input impedance Damping factor @ 20 Hz Damping factor @ 80 Hz Damping factor @ 400 Hz Input sensitivity Stability Low pass filter (Low Pass) Bass boost Subsonic filter Phase control 3 The short circuit current can exceed 900 amps. Crossover frequency control (LOW PASS) Yes 700 x 90 x 275 If you have activated the crossover (LP) by adjusting the position of the crossover switch, you can then use the control to adjust the crossover frequency of the filter to a continuously variable setting anywhere between 50 Hz and 250 Hz. this control has no function in full-range mode. Settings for a subwoofer In order to obtain the best sound when a subwoofer is connected, the subwoofer must be separated as far as the frequencies it receives are concerned, i. It must only be fed with low frequencies (bass). Firstly, turn down the LEVEL control on the amplifier to minimum and set the LOW PASS frequency control to its centre position. Now play some music on your car sound system that you are very familiar with and that contains some low bass (e. Now slowly increase the volume of the subwoofer by turning the LEVEL control on the amplifier in a clockwise direction until you feel that the sound of the music is well balanced, i. The bass is neither too weak nor overpowering. Now listen to the relationship between deep male voices and the upper bass and also take note of the relationship between the upper bass (kick bass) and the lower bass. The bass should ideally sound crisp and have a clear low bass component, and male voices should neither sound too weak nor should they billow out. You can stop making adjustments if you are happy with the sound. If male voices seem to billow out or the low bass is too weak, you should turn the LOW PASS frequency control slightly towards minimum and then continue making your adjustments as described in point 2 onwards. If the bass sounds low but dirty and booming or the male voices sound too weak, you should turn the LOW PASS frequency control slightly towards maximum. Next, continue making your adjustments as described in point 2 onwards. The phase control should be set in such a way that the bass blends into the overall sound as best as possible and cannot be heard as a separate sound source. If you want to precisely optimise the acoustic settings of the crossover, we recommend you obtain advice from a Blaupunkt dealer. It is very important that you take into account the specifications of the loudspeakers being used whilst you are adjusting the crossover. BASS BOOST You can adjust the bass output of the Blaupunkt amplifier using the bass boost control. It can be adjusted in order to protect the subwoofer against mechanical overload due to low bass frequencies that fall outside our hearing range. Integrated fuses (FUSE) The fuses that are integrated in the amplifier protect the power amplifier and the entire electrical system in the event of a fault. [. . . ] In order to obtain the best sound when a subwoofer is connected, the subwoofer must be separated as far as the frequencies it receives are concerned, i. It must only be fed with low frequencies (bass). To ensure that this is the case, select LP and use the crossover frequency control to adjust the upper frequency to between 50 Hz and 250 Hz. This ensures that every subwoofer is optimally separated as far as the frequencies it receives are concerned. [. . . ]