User manual BLAUPUNKT GTA 4100

[. . . ] Recommendation: A power amplifier's performance is only as good as its installation. Proper installation will maximise the overall performance of your audio system. We recommend that you have our product installed professionally. Should you decide to install the amplifier yourself, however, please read through these instructions carefully, and take your time over the installation. [. . . ] 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 . amplifier GTA 4100 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. This enables the amplifier to be switched on and off with the radio's On/ Off switch. 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 GTA 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. loudspeaker connections (If the amplifier is to be connected in a bridged mode , proceed with the section "Bridged loudspeaker connections". ) As with any audio component, connection of the amplifier and speakers with the correct polarity is essential for good bass reproduction. This enables you to use the amplifier for one or more subwoofer(s) or a mid-range speaker. In this configuration the amplifier sums the right-hand and left-hand channels, delivering a single channel (mono) output. Note: The amplifier can sum the right- and left-hand signal information only if both the right- and left-hand RCA connections have been made. [. . . ] 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. [. . . ]