Sony XM-300 Service Manual

US Model
AEP Model
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
OTHER SPECIFICATIONS
Circuit system BTL system
Inputs Auxiliary inputs
(DNONO jACKS) ....... cesses
Remote control input
(sure seal connector) ...........1
Outputs Speaker outputs
(sure seal connectors) .........4
Speaker impedance
3.2—8 ohms
Frequency response
20—30,000 Hz *3 dB (4 ohms,
1 W)*
Maximum power output
25 watts per channel
minimum RMS at 4 ohms
Harmonic distortion
Less than 0.06% (1 KHz,
4 ohms, 1 W)
Power requirements
12 V de car battery
(negative ground)
Current drain
5.5 A (at maximum output) *
Mounting dimensions
Approx. 178 x 25 x 163 mm
(w/h/d)
(71/, x 1x 61/, inches)
Weight
Approx. 1 kg (2 Ib 4 02)
* Measured at 14.4 V
MICROFILM
FEATURES
@ Maximum power output of 25 watts per
channel.
@ Low distortion of less than 0.06%.
@A remote power system automatically
-switches the amplifier on when a connected
cassette player or tuner is turned on.
Protection circuit
This power amplifier employs a protection
circuit to protect the speakers if the
amplifier malfunctions. When a protection
circuit activates, there will be an abrupt loss
of sound from the speakers.
STEREO POWER AMPLIFIER
ONY.
we ma et
H
XM-300
CONNECTIONS
Caution
@ Before making connections, disconnect
the ground terminal of the car battery to
avoid short circuits.
@Connect the red power input lead only
after all other leads have been connected.
@ Run all ground wires to a common ground
point.
SPEAKER CONNECTION
@Since the XM-300 employs the BTL
(balanced transformerless) circuit system,
be sure to make speaker connections as il-
lustrated.
If the connection is made through already
existing speaker leads which have a com-
mon © lead for both right and left channels,
it is possible that the amplifier and the
speaker system will be damaged.
@Do not connect the © terminal of the
speaker system with the car chassis, and do
not connect the © terminal of the right
speaker with that of the left speaker. Doing
so will damage the XM-300. .
XM-300
©
© Red
striped
G
tt
{
eS
Right speaker
Left speaker
CONNECTION EXAMPLE
Ground wire
(black)
Ne
to a metal point
of the car
Y;
Ground wire
(black)
Car antenna
Power anten
na relay con
trol lead
(blue)
to the ® 12 V power
terminal which is
energized in the
accessory position
Connecting cord of the ignition key Fuse pox
(phono plugs to
phono plugs)
Input
Power antenna relay
control lead (blue)
12 V battery
Power input lead (red)
p
Speaker system