SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Audio Business Group
SPECIFICATIONS
FM/AM COMPACT DISC PLAYER
9-887-940-01
2007L04-1
©
2007.12
US Model
CDX-GT72W/GT720
E Model
CDX-GT770
Ver. 1.0 2007.12
Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type MG-101FC-188//Q
Optical Pick-up Name DAX-25A
• The tuner and CD sections have no adjustments.
(Photo: CDX-GT720)
CD Player section
Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and fl utter: Below measurable limit
Tuner section
FM
Tuning range:
CDX-GT72W/GT720:
87.5 – 107.9 MHz
CDX-GT770:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval:
CDX-GT770:
50 kHz/200 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio:
67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz:
0.5 % (stereo), 0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
AM
Tuning range:
CDX-GT72W/GT720:
530 – 1,710 kHz
CDX-GT770:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval:
CDX-GT770:
9 kHz/10 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30 μV
Power amplifi er section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W × 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna (aerial) relay control terminal
Power amplifi er control terminal
Inputs:
Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input terminal
Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
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))
Dimensions: Approx. 178 × 50 × 190 mm
(7
1/8 × 2 × 7 1/2 in.) (w/h/d)
Mounting dimensions:
Approx. 182 × 53 × 163 mm
(7
1/4 × 2 1/8 × 6 1/2 in.) (w/h/d)
Mass: Approx. 1.6 kg (3 lb 9 oz)
Supplied accessories:
Card remote commander:
RM-X152 (CDX-GT72W/GT720)
RM-X156 (CDX-GT770)
Parts for installation and connections (1 set)
Design and specifi cations are subject to change
without notice.
AUDIO POWER SPECIFICATIONS
(CDX-GT72W/GT720)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23.2 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 5% total harmonic distortion.
CDX-GT72W/GT720/GT770
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