Sony XM-1002HX Operating Instructions page 2

I I
Precaution
• This unit is designed for negative ground 12 V
DCoperationonly.
• Use speakers with suitable impedance.
-- HI-CURRENTmode: 1 to 2 _.
-- HI-VOLTAGE mode: 2 to 4 f_.
• 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 where:
-- it would be subject to high temperatures such
from direct sunlight or hot air from the
heater
-- it would be exposed to rain or moisture
-- it would be subject to dust or dirt.
• If your car is parked in direct sunlight and there
is a considerable rise intemperature inside the
car, allowtheunit tocooldown before use.
• When installing theunit horizontally, be surenot
tocoverthefins withthefloor carpet etc.
• If this unit isplacedtooclose tothecarradio,
interference may occur. I nthis case, r elocate the
amplifier away from thecarradio.
• If no power isbeingsupplied tothecassette
player ortuner, c hecktheconnections.
• Thispower amplifier employs a protection
circuit* toprotect t hetransistors and speakers if
theamplifier m alfunctions. Do notattempttotest
theprotection circuits by covering theheatsink
orconnecting i mproperloads.
• Do notusetheunit on a weak battery a sits
optimum performance dependson a good power
supply.
• Forsafety reasons, k eep your car audiovolume
moderateso that you canstill hearsounds
outside your car.
Fuse Replacement
If the fuse blows, check the power comaection and
replace the fuse. If the fuse blows again after
replacement, there may be an internal malfunction.
In such a case, consult your nearest Sony dealer.
Warning
When replacing thefuse, be sureto useone
matching the amperage stated above the fuse
holder. Never use a fuse with an amperage rating
exceeding the one supplied with the unit as this
could damage the unit.
*Protection circuit
This amplifieris provided with aprotection circuit that
operatesin thefollowing cases:
-- when the unit is overheated
-- whena DC current is generated
-- whenthe speaker terminals areshort circuited.
The colorof the POWERIPROTECTOR indicator will
changefrom green to red, and the unit will shut down.
If this happens,turn off theconnected equipment, take out
the cassette tape or disc, and determine thecauseof the
malfimction. If the amplifierhas overheated, wait until the
unit coolsdown beforeuse.
If you have any questions or problems concerning
your unit that are not covered in this manual,
please consult your nearest Sony dealer.
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.
Problem Cause/Solution
The POWERIPROTECTOR The fuseisblown. --_Replacethefusewith a new one.
Indkator does not light up. The ground lead isnot securely connected._ Fastentheground lead
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. _ Turn on the master unit.
• The system employs too many amplifiers. --_ Use a relay.
Check the battery voltage (10.5-16 V).
The OVER CURRENT indicator lightup Turn oft thepower switch. The speaker outputs areshort-circuited. ---*
In amber. Rectify the cause of the short-circuit.
The OFFSET indicator lights up In Turn oft the power switd_. Make sure the speaker cord and ground lead
amber, are securely connected.
The THERMAL Indicator lights up In The unit heats up abnormally.
amber. • Use speakerswith suitable i mpedance.
- HI-CURRENT mode: I to8 _.
- HI-VOLTAGE mode: 2 to8 _.
Use HI-C_ENT mode toreduce generatedheat.
•Make sure to placethe unitina wellventilated location.
Alternator noise Is heard. The power connecting leads are installed too close to the RCA pin cords.
---# Keep theleads away from the cords.
The ground lead isnot securely connected.--+Fastenthe ground lead
securely to a metal point of thecar.
Negative speakerleads aretouchingthecar chassis. _ Keep theleads
away from the carchassis.
The sound
Is muffled.
The FILTER selector switch is set to the "LPF" position•
The sound is too low. The LEVEL adjustment control is set to the "MIN" position.
III I I IIIIIIIII
Specifications
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HAI_vlONIC DISTOR'IION
100/50 watts per channel minimum continuous average power into
4 ohms, both channels driven from 20 Hz to 20 kHz with no more
than 0.04% total harmonic distortion per Car Audio Ad Hoc
Committee standards.
Other Specifications
Circuit system OTL (output t ransformerless)
circuit
Pulse powersupply
Inputs RCA pin jacks
High level input connector
Outputs Speaker terminals
Through out pin jacks
Speaker impedance
I* - 8 D (stereo)
2* - 8 t_(when usedasa bridging
amplifier)
Maximum outputs (HI-CURRENT/HI-VOLTAGE)
120/230 W x 2 (at 4 D)
380/580 W (monaural) at4
Ratedoutputs (HI-CURRENT/HI-VOLTAGE)
(supply voltage a t 14.4 V)
50/100 W ×2 (20 Hz- 20kHz,
0.04%THD, at 4 11)
70/140 W × 2 (20Hz - 20 kHz, 0.1
% THD, at 212)
140/280 W (monaural) (20 Hz - 20
kHz, 0.1% THD, at 4 t'l)
Frequency r esponse
5 Hz - 50kHz (Z'dB)
Harmonicdistortion
0.005 %or less
(atlkHz, 4 a)
Input level adjustment range
0.2 - 4.0 V (RCA pin jacks)
0.4 - 8.0 V (High level input)
High-pass filter 50 - 200 Hz, -12 dB/oct
Low-pass filter 50 - 200 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: 26 A
(4t'1 HI-VOLTAGE mode)
, Remote input: 2 mA
Dimensions Approx. 258 x 50 x 320 mm
(101/4 x 2 x 12 s/s in.)
(1/h / p) not incl. projecting par ts
and controls
Mass Approx. 3.3 kg (7 Ib. 4 oz.) not
incL accessories
Supplied accessories
Mounting screws (4),
Terminal cap (1)
Optionalaccessories
Connecting cord for power
amplifier RC-46
Designand specificationsaresubjectto change
withoutnotice.
* HI-CURRENT only
Features
• Maximum power output of 230 watts per
channel (at 4 £_).
• This unit can be used as a bridging amplifier
with a maximum output of 580 watts.
• Direct connection can be made with the speake_
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 _) and HI-VOLTAGE mode (2-4 £2).
• Protection circuit and indicator provided.
• Pulse power supply* for stable, regulated output
power.
• New circuit wilich _emoves the _ouit:_ zesistance
from the final MOS FET output stage, and drives
the speaker directly.
* Pulse power supply
This unit has a built-in power regulator which converts
the power supplied by the DC 12 V ear 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 pawer supply system provides a highly
ef_cient power supply with a low impedance output.
I I I I IIIII IIII I
Location and Function of Controls
[] MODE indicator
Indicates H I-CURRENT mode or HI-VOLTAGE mode.
[] POWER/PROTECTOR indicator
• OVER CURRENT lights up in green during normal operation, rl'he coiol 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 return 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 seems low.
[] LOWBOOST level control
Turn this control to boost the frequencies around 40 Hz to a maximum of 10
dB.
[] Cut-off frequency adjustment control
Sets the cut-off frequency (50-200 Hz) for the low-pass or high-pass filters.
[] 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.
[] 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 _. This
mode sends a signal via parallel circuits for a powerful sound
• In HI-VOLTAGE mode the speaker impedance is 2 to 4 ft. In this mode
you can enjoy clear sound with the dynamic range.
_.--Tr_ ODE .... _f POWER/PROTECTER I
Hla_URR ENT H bVOLTAQE ,J _OVER CUIR RE NT OFFS_ THERMAL J
FILTER
LEVEL LOWBOOST LPF OFF HPF
LOW BOOST
dB
l0
lO
Cut-off frequency/Fr6quence de coupure
dB
l0
0
40
-20
-3O
'4O
-5O
"6O
-70
"10
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Circuit Diagram / Sch6ma du circuit
Lch (_
(MONO)
FILTER
LEVEL _--° h
<ow0oo0,
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Inverted
Rch(_) ''
FILTER
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MONO ,
2
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Power
AMP
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