Sony DSX-M50BT, Service Manual

SERVICE MANUAL

Sony Corporation

Published by Sony Techno Create Corporation

DSX-M50BT

SPECIFICATIONS

9-893-910-01

2013K33-1

© 

2013.11

US Model

Canadian Model

Ver. 1.0  2013.11

•  This model is not equipped with a mechanism deck.

FOR THE CUSTOMERS IN THE USA. NOT 
APPLICABLE IN CANADA, INCLUDING IN 
THE PROVINCE OF QUEBEC.

POUR LES CLIENTS AUX ÉTATS-UNIS. NON 
APPLICABLE AU CANADA, Y COMPRIS LA 
PROVINCE DE QUÉBEC.

AUDIO POWER SPECIFICATIONS

CEA2006 Standard
Power Output: 17 Watts RMS × 4 at 
4 Ohms < 1% THD+N
SN Ratio: 80 dBA 
(reference: 1 Watt into 4 Ohms)

Tuner section

FM

Tuning range: 

87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 108.0 MHz (at 100 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)

USB Player section

Interface: USB (Full-speed)

Maximum current: 1 A

The maximum number of recognizable data:

Folders (albums): 128
Files (tracks) per folder: 512

Corresponding codec: 

MP3 (.mp3) and WMA (.wma)

Wireless Communication

Communication System: 

BLUETOOTH Standard version 2.1 + EDR

Output: 

BLUETOOTH Standard Power Class 2 
(Max. +4 dBm)

Maximum communication range: 

Line of sight approx. 10 m (33 ft)*

1

FM tuning step: 

50 kHz/100 kHz/200 kHz switchable

Antenna (aerial) terminal: 

External antenna (aerial) connector

Intermediate frequency: 25 kHz

Usable sensitivity: 8 dBf

Selectivity: 75 dB at 400 kHz

Signal-to-noise ratio: 80 dB (stereo)

Separation: 50 dB at 1 kHz

Frequency response: 20 – 15,000 Hz

AM

Tuning range: 

531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)

AM tuning step: 

9 kHz/10 kHz switchable

Antenna (aerial) terminal: 

External antenna (aerial) connector

Intermediate frequency: 

9,124.5 kHz or 9,115.5 kHz/4.5 kHz (at 9 kHz 
step)
9,115 kHz or 9,125 kHz/5 kHz (at 10 kHz step)

Sensitivity: 26 μV

Frequency band: 

2.4 GHz band (2.4000 – 2.4835 GHz)

Modulation method: FHSS

Compatible BLUETOOTH Profiles*

2

:

A2DP (Advanced Audio Distribution Profile) 
1.2
AVRCP (Audio Video Remote Control Profile) 
1.3
HFP (Handsfree Profile) 1.5
PBAP (Phone Book Access Profile)

*1 The actual range will vary depending on factors 

such as obstacles between devices, magnetic 
fields around a microwave oven, static 
electricity, reception sensitivity, antenna 
(aerial)’s performance, operating system, 
software application, etc.

*2 BLUETOOTH standard profiles indicate the 

purpose of BLUETOOTH communication 
between devices.

Power amplifier section

Output: Speaker outputs

Speaker impedance: 4 – 8 ohms

Maximum power output: 55 W × 4 (at 4 ohms)

General

Outputs:

Audio outputs terminal (front, rear)
Power antenna (aerial)/Power amplifier 
control terminal (REM OUT)

Inputs:

Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
USB port

Power requirements: 12 V DC boat battery 

(negative ground (earth))

Dimensions: 

Approx. 178 mm × 50 mm × 120 mm 
(7 

1

/

8

 in × 2 in × 4 

7

/

8

 in) (w/h/d)

Mounting dimensions: 

Approx. 182 mm × 53 mm × 103 mm 
(7 

1

/

4

 in × 2 

1

/

8

 in × 4 

1

/

8

 in) (w/h/d)

Mass: Approx. 0.7 kg (1 lb 9 oz)

Package contents:

Remote commander (1): RM-X231
Parts for installation and connections (1 set)

Design and specifications are subject to 
change without notice.

FM/AM DIGITAL MEDIA PLAYER