� Maximum power output of 120 W per channel (at 4 �). � This unit can be used as a bridging amplifier with a maximum output of 300 W. � Direct connection can be made with the speaker output of your car audio if it is not equipped with a line output (High level input connection). � Built-in variable LPF (Low-pass filter), HPF (Highpass filter) and low boost circuit. � Protection circuit and indicator provided. � Pulse power supply* for stable, regulated output power.
* Pulse power supply This unit has a built-in power regulator which converts the power supplied by the DC 12 V car battery into high speed pulses using a semiconductor switch. These pulses are stepped up by the built-in pulse transformer and separated into both positive and negative power supplies before being converted into direct current again. This light weight power supply system provides a highly efficient power supply with a low impedance output.
Troubleshooting Guide
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 POWER/PROTECTOR indicator does not light up.
Location and Function of Controls
1 POWER/PROTECTOR indicator Lights up in green during operation. When the PROTECTOR is activated the indicator will change from green to red. When the PROTECTOR is activated refer to the TroubleShooting Guide. 2 FILTER selector switch When the switch is in the LPF position, the filter is set to low-pass. When in the HPF position, the filter is set to high-pass. 3 Cut-off frequency adjustment control Sets the cut-off frequency (50 � 300 Hz) for the low-pass or high-pass filters. 4 LOW BOOST level control Turn this control to boost the frequencies around 40 Hz to a maximum of 10 dB. 5 LEVEL adjustment control The input level can be adjusted with this control. Turn it in the clockwise direction when the output level of the car audio seems low.
The fuse is blown. t Replace both the fuses with a new one. The ground wire is not securely connected. t Fasten the ground wire securely to a metal point of the car. The voltage going into the remote terminal is too low. � The connected master unit is not turned on. t Turn on the master unit. � The system employs too many amplifiers. t Use a relay. Check the battery voltage (10.5 � 16 V).
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-4060GTX Serial No.
-10 -20 -30 -40 -50 -60 -70 -80 10 100 1k
� The POWER/PROTECTOR indicator will change from green to red. � The unit becomes abnormally hot.
Turn off the power switch. The speaker outputs are short-circuited. t Rectify the cause of the short-circuit. � Use speakers with suitable impedance. t 2 � 8 � (stereo) , 4 � 8 � (when used as a bridging amplifier). Turn off the power switch. Make sure the speaker cord and ground wire are securely connected. The unit heats up abnormally. � Make sure to place the unit in a well ventilated location.
Alternator noise is heard.
The power connecting wires are installed too close to the RCA pin cords. t Keep the power connecting wires away from the RCA pin cords. The ground wire is not securely connected. t Fasten the ground wire securely to a metal point of the car. Negative speaker cords are touching the car chassis. t Keep the cords away from the car chassis.
The FILTER switch is set to the �LPF� position. � By default, the FILTER switch is in �OFF� position. t When connecting the full range speaker, set to the �OFF� position. The LEVEL adjustment control is not appropriate. Turn the LEVEL adjustment control in the clockwise direction. The thermal protector is activated. t Reduce the volume.
Specifications
AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION 60 watts per channel minimum continuous average power into 4 ohms, both channels driven from 20 Hz to 20 kHz with no more than 0.08 % total harmonic distortion per Car Audio Ad Hoc Committee standards.
Other Specifications
Circuit system OTL (output transformerless) circuit Pulse power supply RCA pin jacks High level input connector Harmonic distortion 0.005 % or less (at 1 kHz) Input level adjustment range 0.3 � 6.0 V (RCA pin jacks) 1.2 � 12 V (High level input) High-pass filter 50 � 300 Hz, �12 dB/oct Low-pass filter 50 � 300 Hz, �12 dB/oct Low boost 0 � 10 dB (40 Hz) Power requirements 12 V DC car battery (negative ground) Power supply voltage 10.5 � 16 V Current drain at rated output: 31 A (4 �) Remote input: 1 mA Dimensions Approx. 400 � 55 � 276 mm (w/h/d) (15 3/4 � 2 1/4 � 10 7/8 in.) not incl. projecting parts and controls Mass Approx. 4.6 kg (10 lb. 3 oz.) not incl. accessories Supplied accessories Mounting screws (4) High level input cord (1) Protection cap (1) Design and specifications are subject to change without notice.
LOW BOOST LEVEL (40Hz)
FILTER
0.5
Power AMP
� L�indicateur POWER/PROTECTOR passe du vert au rouge. � L�appareil chauffe de façon anormale.
Installation
Before Installation
� Mount the unit either inside the trunk 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. � Do not install the unit under the floor carpet, where the heat dissipation from the unit will be considerably impaired. First, place the unit where you plan to install it, and mark the positions of the four screw holes on the surface of the mounting board (not supplied). Then ø 6 (1/4) drill the holes approximately 3 mm (1/8 in.) in diameter and mount the unit onto the board with the supplied mounting screws. The supplied mounting screws are 15 mm (19/32 in.) long. Therefore, make sure that the mounting board is thicker than 15 mm (19/32 in.).
Lead-free solder is used for soldering certain parts. Halogenated flame retardants are not used in printed wiring boards. Halogenated flame retardants are not used in cabinets. Corrugated cardboard is used for the packaging cushions.