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Фрагмент инструкции
"LPF": Slide switch to this position if the amplifier is used as a subwoofer amplifier. 2. HIGH-PASS/LOW-PASS FREQUENCY SELECTOR KNOB (FREQ) Adjust high/low-pass crossover frequency between 30 to 300Hz. 3. BASS BOOST CONTROL (BOOST) Select a boost level between 0dB and +18dB to enhance the bass performance of your sound system. 4. INPUT SENSITIVITY LEVEL CONTROL (SENS) The input sensitivity level can be varied from 5.0 volts to 100 mV depending on the output voltage of the source unit (refer to sub-section titled INPUT SENSITIVITY ADJUSTMENT). 5. HIGH IMPEDANCE INPUT (RCA) To be connected to RCA pre-amp outputs from a source unit (i.e., radio, tape deck or CD player). 6. LOW IMPEDANCE INPUT (SPKR LEVEL) To be connected to speaker outputs from a source unit (i.e., radio, tape deck or CD player) when RCA outputs are not available. 7. LINE LEVEL OUTPUT This output can be used to connect to another amplifier for system expansion. Note: This line level output is full range. 8. REMOTE SUBWOOFER GAIN INPUT (R S) To be connected to the optional R S remote subwoofer volume control. OUTPUT PANEL Figure 2: Output Panel Terminals and Indicators 9. POWER AND PROTECT INDICATOR (PWR/PRT) Green light indicates that the amplifier is "ON". Red light indicates either a high current, short circuit or DC offset is detected at the speaker outputs. The amplifier will revert to normal operation once the problem is rectified. The Red indicator also lights up at a high operating temperature. Under this condition, the amplifier will automatically shut down. As soon as the temperature falls to a safe level, the amplifier will automatically resume operation. 10. POWER INPUT TERMINAL (B+) To be connected to the positive terminal of the vehicle’s battery or other constant +12 V source. 11. GROUND INPUT TERMINAL (GND) To be wired to the vehicle’s chassis for ground. 12. REMOTE TURN-ON INPUT TERMINAL (REM) To be connected to the remote control wire or power antenna lead of the source unit for remote ON/OFF. 13. FUSE RECEPTACLE 14. LEFT/RIGHT SPEAKER OUTPUT TERMINAL For connection to the speaker system. 5 COUSTIC.COM 7 INSTALLATION By purchasing the 241/401/601SE power amplifiers, you are already one step closer to experiencing the purest and most natural sound quality in the automobile environment. To take full advantage of the potential of this amplifier, before installation, we strongly recommend that you acquaint yourself with all its available features and then spend some time in designing a system most suitable for you. Consider the components you have now and those that you plan on adding or upgrading in the future. The 241/401/601SE power amplifiers are designed for use with a 12-Volt negative ground system. Installing this amplifier in a vehicle with a POSITIVE ground system will result in severe damage to the amplifier, other audio components and/or the vehicle’s electrical components. If your vehicle happens to run on a positive ground system, please consult your Coustic dealer. Caution: Please follow all the installation recommendation and instructions in this manual. Installing and/or using the amplifier in methods other than those outlined herein may reduce the performance capability of the amplifier. Any such installation or usage renders the product warranty void. Warning: The battery ground should remain DISCONNECTED at all stages of installation. LOCATION Ventilation: The primary deciding factor of amplifier location is heat dissipation. Despite its highly efficient heat dissipation design, the amplifier can be crippled by inadequate ventilation. Prolonged operation at high volumes, combined with inadequate ventilation, may cause the amplifier to overheat and trigger the automatic shut down circuit until the temperature returns to a safe level. To ensure adequate ventilation, the ideal location for the amplifier is a spot away from any heat source, with at least 2 inches of clearance above and around the unit. Figure 3: Upright Mount on Horizontal Surface Figure 4: Parallel Mount on Vertical Surface The amplifier may be mounted upright on a horizontal surface (see Figure 3) or parallel to a vertical surface (see Figure 4). However, the amplifier should never be mounted upside down (see Figure 5) for the simple reason that the hot air generated by the amplifier would have to go through the unit internally on its natural upward path (i.e., "feedback" into the unit) and would result in increased internal temperature. This would speed up the thermal shut down of the amplifier. Figure 5: Inverted Mount (Not Recommended) Vibration: Constant vibration could eventually cause the amplifier to come off its mount, resulting in stress on wire connections, which, in turn, results in "open" or "short" circuit. For this reason, a location with minimum vibration and a flat surface for secure and firm mounting should be chosen for the amplifier. Moisture: The amplifier should never be exposed to moisture and water. Taking all the above int...
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