Sony wx-gt77ui Manual

Under normal conditions, the battery will last 
approximately 1 year. (The service life may be 
shorter, depending on the conditions of use.)
When the battery becomes weak, the range of the 
card remote commander becomes shorter. Replace 
the battery with a new CR2025 lithium battery. Use 
of any other battery may present a risk of fire or 
explosion.

Notes on the lithium battery
• Keep the lithium battery out of the reach of children. 

• Wipe the battery with a dry cloth to assure a good 

• Be sure to observe the correct polarity when 

• Do not hold the battery with metallic tweezers, 

When replacing the fuse, be 
sure to use one matching the 
amperage rating stated on the 
original fuse. If the fuse blows, 
check the power connection 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.

Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit

Tuning range: 87.5 – 107.9 MHz
Antenna (aerial) terminal: 

External antenna (aerial) connector

Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz

Tuning range: 530 – 1,710 kHz
Antenna (aerial) terminal: 

External antenna (aerial) connector

Intermediate frequency: 25 kHz
Sensitivity: 26 µV

Interface: USB (Full-speed)
Maximum current: 500mA

Output: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W 

× 4 (at 4 ohms)

Outputs: 

Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna (aerial) relay control terminal
Power amplifier control terminal

Inputs: 

Remote controller input terminal
Antenna (aerial) input terminal
Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input terminal
AUX input jack (stereo mini jack)
USB signal input terminal

Tone controls: 

Low: ±10 dB at 60 Hz (XPLOD)
Mid: ±10 dB at 1 kHz (XPLOD)
High: ±10 dB at 10 kHz (XPLOD)

Power requirements: 12 V DC car battery 

(negative ground (earth))

1

2

c

Battery may explode if mistreated.
Do not recharge, disassemble, or dispose of
in fire.

CEA2006 Standard
Power Output: 17 Watts RMS 

× 4 at 

4 Ohms < 1% THD+N 
SN Ratio: 82 dBA 
(reference: 1 Watt into 4 Ohms)