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manual abstract
MONO POWER AMPLIFIER L 25Hz 15Hz INFRASONIC OFF INPUT SENSITIVITY(V) LPF FREQUENCY(Hz) GND R LINE IN 0.3 0.5 1 2 3 45 0.2 150100 70 50 200 LEFT RIGHT SPEAKER LEVEL INPUT POWER INFUSE(20A) BATT GND P.CON(REMOTE) SPEAKER OUTPUT 20 20 SERVO II· SERVO II· 1 2 3 4 5 6 7 890! @ 1 FUSE (20 A . 2) 2 Battery terminal 3 Ground terminal 4 Power control (REMOTE) terminal 5 Speaker output terminals As this unit accepts speakers with a minimum impedance of 2 ohms, connect speakers with 2-ohm or higher impedance to these terminals. 2CAUTION The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result. 6 SIGMA SERVO FEED BACK terminals (See p.8) 2CAUTION Be sure to make proper connections to the SIGMA SERVO FEED BACK terminals. Incorrect connection may result in lack of sound output or other malfunctions. 7 INFRASONIC FILTER switch Ultralow frequencies that cannot be reproduced even by a subwoofer speaker do not become sound but become unnecessary oscillations, which affect the sound by causing distortion, etc. Setting this switch to "15 Hz" or "25 Hz" cuts the frequencies below the respective frequency. This improves the reproduction performance of the speakers by eliminating unnecessary oscillations which will not become sound. 8 LOW PASS FILTER FREQUENCY control This control adjusts the frequency band output from this unit. 9 INPUT SENSITIVITY control Set this control according to the pre-output level of the center unit connected with this unit, or to the maximum power output of the genuine- accessory car stereo. Use the diagram on the right as a guide. 15 0.3 0.2 0.5 1 2 345 (V) (W) 25 10 4 English NOTE For the pre-output level or the maximum power output, refer to the “Specifications” in the instruction manual of the center unit. 0 RCA cable ground lead terminal ! LINE IN terminal @ Speaker level input terminals Power indicator ¦ Power indicator: When the power is turned on, the Power indicator lights. If the Power indicator does not light when the power is turned on, the protection function may be activated. Check whether there is any indication of trouble. ¦ The protection function is activated in the followingsituations: This unit is equipped with a protection function for protecting this unit and your speakers from various accidents or problems that can occur. When the protection function is triggered, the Power indicator goes off and the amplifier stops operating. • A speaker cable may be short-circuited. • A speaker output may be in contact with the ground. • The temperature of the internal parts may be higher than 120°C (248°F). • The sigma servo connection may be erroneous. • The fuse of this unit may be blown. • The unit may be malfunctioning and sending DC signal to the speaker output. • The grounding cable of this unit may not be connected with a metallic part which is electrically connected with the negative terminal of the battery. • The power control cable may not be connected to this unit. • The grounding cable of the center unit (cassette receiver, CD receiver, etc.) may not be connected with a metallic part which is electrically connected with the negative terminal of the battery. Power indicator English 5 Connection n RCA cable connection . LEFT RIGHT CENTER UNIT (Cassette receiver, CD receiver, etc.) Power control cable (Commercially available part) RCA cable (Commercially available part) Do not connect cables and leads to both RCA cable input jacks and the speaker input terminals simultaneously, for this may cause malfunction or damage. 2C A UTION GND RCA cable ground terminal When using an RCA cable with a ground lead attached, connect the ground lead to this terminal. Do not use this terminal for power source grounding. This unit will be damaged if the power source grounding wire is connected to this terminal. 2C A UTION Left output (White) Right output (Red) Left input Right input n Speaker level input connection MONO POWER AMPLIFIER L 25Hz 15Hz INFRASONIC OFF INPUT SENSITIVITY(V) LPF FREQUENCY(Hz) GND R LINE IN 0.3 0.5 1 2 3 45 0.2 150100 70 50 200 LEFT RIGHT SPEAKER LEVEL INPUT -+ LEFT RIGHTSPEAKER LEVEL INPUT Genuine-accessory car stereo ACC Battey Left input Right input Left output Right output Car fuse box Lead terminal (Commercially available part) 2CAUTION • The genuine-accessory car stereo shall have a maximum power output of no more than 25 W. • Do not connect the speaker output leads from a power amplifier (Optional) to the speaker input terminals of this unit, for this may cause malfunction or damage. • Do not connect cables and leads to both RCA cable input jacks and the speaker input terminals simultaneously, for this may cause malfunction or damage. • Connect the power control lead to a power supply which can be turned ON/OFF by the ignition key switch (ACC line). With this connection, shock noise may be generated when the power of the genuine- accessory car stereo is switched ON/OFF. 6 English n Power and Speakers cab...