Sony XM-1002-HX - Manuel (Page 2)

Features
• Maximum power output of 230 watts per
channel (at 4 ii).
• This unit can be used as a bridging amplifier
with a maximum output of 580 watts.
• Direct connection can be made with the speaker
output of your car audio if it is not equipped
with the line output (High level input
connection).
• Built in variable LPF (Low-pass filter), HPF
(High-pass filter) and low boost circuit.
• Dual mode connection possible for a multi­
speaker system.
• Possible to switch between HI-CURRENT mode
(1-2 Q) and HI-VOLT AGE mode (2-4 Q).
• Protection circuit and indicator provided.
• Pulse power supply* for stable, regulated output
power.
► New circuit which removes the source resistance
from the final MOS FET output stage, and drives
the speaker directly.
'
Pulse power supply
This unit has a built-in poioer regulator which converts
the pozver 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 is to
regulate fluctuating voltage from the car battery. This
light weight power supply system provides a highly
efficient power supply with a low impedance output.
Location and Function of Controls
[T] MODE indicator
Indicates HI-CURRENT mode or HI-VOLT AGE mode.
[2] POWER/PROTECTOR indicator
• OVER CURRENT lights up in green during normal operation. The color will
change from green to amber when receiving a powerful signal.
• OFF SET lights up green during normal operation. The color will change
from green to amber when the voltage going out to the Speaker terminal or
the Pin Jack is too high .
• THERMAL lights up in green during normal operation. The color will
change from green to amber when the temperature rises to an unsafe level.
The color will refurn to green when the temperature returns to normal.
LEVEL adjustment control
The input level can be adjusted with this control when using source
equipment made by other manufacturers. Turn it to MAX when the output
level of the car audio seem»low. -
g] LOWBOOST level control
Turn this control to boost the frequencies around 40 Hz to a maximum of 10
dB.
[ 5 ] Cut-off frequency adjustment control
Sets the cut-off frequency (50-200 Hz) for the low-pass or high-pass filters.
.[U 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.
[ 7 ] HI-CURRENT/HI-VOLTAGE mode switch (located on the bottom of the unit)
Remove the bottom cover to access the switch.
• In HI-CURRENT mode the speaker impedance is 1 to 2 L2. This
mode sends a signal via parallel circuits for a powerful sound
• In HI-VOLTAGE mode the speaker impedance is 2 to 4 i2. In this mode
you can enjoy clear sound with the dynamic range.
MODE POWER/PROTECTER
m m> m n nn>
HI-CURRENT Ht-VOLTAGE OVER CURRENT OFFSET THERMAL
m
FILTER