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Sony XM-1002HX Operating Instructions page 2

Stereo power amplifier
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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
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Circuit Diagram / Sch6ma du circuit
Lch (_
(MONO)
FILTER
LEVEL _--°
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Power
AMP
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