4-569-998-12(1) Stereo Power Amplifier For customers in the United States: The warranty for this product is included in this manual (page 12). Owner’s Record The model and serial numbers are located on the bottom of the unit. Record the serial number in the space provided below. Refer to these numbers whenever you call upon your Sony dealer regarding this product. Model No. XM-GS4 Serial No.
For safety, be sure to install this unit either inside the trunk (boot) or under a seat. For details, see “Installation and Connections” (page 5).
Features Table of Contents Maximum power output of 150 W per channel (at 4 Ω). This unit can be used as a bridging amplifier with a maximum output of 350 W. Built-in LP (low-pass) filter, HP (high-pass) filter, subsonic filter and Low boost circuit. Protection circuit and indicator provided. Direct connection can be made with the speaker output of your car audio unit if it is not equipped with the line output (High level input connection).
Operation Location and Function of Controls Ventilation outlet Dissipates heat. Depending on the temperature of the unit, the fan operates in one of three status (stopped, low-speed, high-speed). Illumination indicator Lights up in white during operation. If the protection circuit activates, the illumination indicator changes from white to red. For details, see “Troubleshooting” (page 11). SUBSONIC FILTER adjustment control Adjusts the cut-off frequency (6 – 70 Hz) for the subsonic filter.
Installation and Connections Parts for Installation and Connections ø4 × 14 mm (3/16 × 9/16 in) ×4 This parts list does not include all the package contents. Installation Mount the unit either inside the trunk (boot) or under a seat. Choose the mounting location carefully so the unit will not interfere with the normal movements of the driver and it will not be exposed to direct sunlight or hot air from the heater.
Use a power supply wire with a fuse (60 A) attached. All power wires connected to the positive battery post should be fused within 450 mm (17 3/4 in) of the battery post, and before they pass through any metal. Make sure that the car’s battery wires connected to the car (ground (earth) to chassis) are of a wire gauge at least equal to that of the main power wire connected from the battery to the amplifier. During full-power operation, a current of more than 60 A will run through the system.
High level input connection With the speaker connection , , or (page 7, 8) Gray Front right speaker output Set the FILTER selector switch on the control panel to “HP” (high-pass filter), “LP” (low-pass filter) or “OFF” according to the speaker system. Also, refer to the manual supplied with your speakers for further details. Recommended high-resolution audio system Gray/Striped White Speaker Connections Front left speaker output XM-GS4 (this unit) Super tweeter (e.g.
4-speaker system 2-way system With the input connection or (page 6, 7) With the input connection or (page 6, 7) Front speaker (min. 2 Ω) Full range speakers (min. 2 Ω) Rear speaker (min. 2 Ω) Subwoofer (min. 2 Ω) 3-speaker system With the input connection or (page 6, 7) Full range speakers (min. 2 Ω) Note In this system, the volume of the subwoofer will be controlled by the car audio unit fader control. 2-subwoofer system With the input connection (page 6) Subwoofer (min.
Additional Information Precautions This unit is designed for negative ground (earth) 12 V DC operation only. Use speakers with an impedance of 2 to 8 Ω (4 to 8 Ω when used as a bridging amplifier). Do not connect any active speakers (with built-in amplifiers) to the speaker terminals of the unit. Doing so may damage the active speakers. Avoid installing the unit in areas subject to: high temperatures such as from direct sunlight or hot air from the heater rain or moisture dust or dirt.
Specifications Dimensions Approx. 272 × 51 × 202 mm (10 3/4 × 2 1/8 × 8 in) (w/h/d) not incl. projecting parts and controls AUDIO POWER SPECIFICATIONS CEA2006 Standard Power Output: 70 Watts RMS × 4 at 4 Ohms < 1% THD+N SN Ratio: 93 dBA (reference: 1 Watt into 4 Ohms) Circuit system OTL (output transformerless) circuit, Pulse power supply Inputs RCA pin jacks, High level input connector Input level adjustment range 0.
Troubleshooting The following checklist will assist in the correction of most problems which you may encounter with your unit. Before going through the checklist below, refer to the connection and operating procedures. The sound is too quiet. The LEVEL adjustment control is not appropriate. Turn the LEVEL adjustment control in the clockwise direction. If these solutions do not help improve the situation, consult your nearest Sony dealer. The illumination indicator does not light up. The fuse is blown.
This warranty is valid only in the United States.
