User manual BLAUPUNKT EMA 260

[. . . ] ­ An incorrect installation can result in malfunctions of the electronic vehicle systems or your car sound system. You can select between 2 different audio inputs; ­ Cinch (RCA) ­ Hi level (loudspeaker connections) Use only one of the audio inputs; otherwise, it may lead to audio interferences. The preamplifier outputs are connected to the cinch (RCA) sockets 1 via a shielded sound cable. with control via the loudspeaker outputs , the input connections of pos. [. . . ] Caution: In a bridge circuit, the amplifier load must be 4 ohm or higher. A lower load leads to an overheating or switch-off of the amplifier and can cause permanent damages. The fuses integrated in the amplifier (Fuse) protect the power amplifier and the entire electrical system in case of an error. If a replacement fuse is used, never bridge fuses or replace them with a type with higher current. For example, if a pair of subwoofers is to be connected, the low-pass settings shown are required (Fig. This allows the amplifier to be switched on and off using the on/off-switch of the radio device. The Level control is used to adjust the input sensitivity of the power amplifier to the output voltage of your car sound system preamplifier output. If a car sound system of a third party manufacturer is connected, the input sensitivity must be adjusted corresponding to the manufacturer data. A few important explanations in this context: By turning the control clockwise, the input sensitivity of the amplifier and, therefore, also the volume increases. However, this is not a volume control; no further amplifier output can be achieved in the end position, even if it may sound like that at the beginning. The system merely increases the volume faster if the volume control of the car sound system is turned up. When selecting the installation location, select a dry location that offers sufficient air circulation for cooling the amplifier. The EMA 260 must not be installed on rear shelves, rear seats or other locations that are open to the front. The installation location must be suitable to accept the accompanying screws and provide a firm support. The amplifier power cable must be fitted with a fuse no more than 30 cm from the battery to protect the vehicle battery in case of a short circuit between power amplifier and battery. The fuse of the amplifier protects only the amplifier, not the vehicle battery. Use loudspeakers with 2 - 4 impedance (see table or installation drawing). Do not connect loudspeakers to earth, use only the referenced terminals. Stereo mode Max power Mono mode Max power Stereo mode Max power Stereo mode RMS power Mono mode RMS power Stereo mode RMS power Frequency response Signal-to-noise ratio Signal-to-noise ratio Distortion factor (RMS) Stability Input sensitivity Low-pass filter (Low Pass) High-pass filter (High Pass) Bass boost Dimensions W x H x D (mm) W x H x D (") 2 x 110 W / 4 1 x 330 W / 4 2 x 160 W / 2 2 x 55 W / 4 1 x 165 W / 4 2 x 80 W / 2 10 Hz - 30, 000 Hz > 85 dB @ RMS power > 75 dB @ 1 W / 1 kHz < 0. ­ Securely fasten commercially available minus cables to a noise-free earth point (chassis screw, chassis metal) (not to the minus pole of the battery). ­ Scrap the contact surfaces of the earth point until they are bright and grease with graphite grease. The fuses integrated in the amplifier (Fuse) protect the power amplifier and the entire electrical system in case of an error. [. . . ] 2/3 are fed to the closest loudspeaker cables (front or rear) on the left and right. Bridge output stages (BTL) can also be connected directly without an additional adapter. (If the amplifier is to be jumpered, continue with the section "Bridged loudspeaker connections" at this point). As with every audio component, the correct polarisation of amplifier and loudspeakers is of essentially importance for a good bass response. [. . . ]