Yamaha NX-B55 User Manual

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BLUETOOTH SPEAKER SYSTEM

SYSTEME D’ENCEINTES BLUETOOTH

NX-B55

OWNER’S MANUAL

MODE D’EMPLOI

MANUAL DE INSTRUCCIONES

ULV

Questions and Answers:

R
rbrandtAug 20, 2025
Why is there no sound coming from my Yamaha Speakers, or why is the sound very quiet?
- S
  Sarah PowellAug 21, 2025
  There could be several reasons for this issue: * The unit and the other device might not be correctly connected, so ensure they are properly connected. * The connections could be faulty or incomplete; double-check that all connections are secure, or try reconnecting the unit to the Bluetooth device. * The unit's volume might be set too low; adjust the VOL (volume) control to increase the volume. * The connected device's volume might be too quiet; increase the volume on that device. * Headphones might be connected, which mutes the speakers; disconnect the headphones. * The AUTO STANDBY switch at the rear might be set to INIT; set it to ON or OFF.
J
James CrawfordAug 22, 2025
What to do if my Yamaha Speakers are not turning on?
- S
  Shannon AyersAug 22, 2025
  If your Yamaha speakers are not turning on, check the following: * Ensure the AC adapter is correctly connected to the wall outlet or the 12V (DC 12V) power source. * Make sure the power is turned on. The indicator light should illuminate when the power is on.
J
Jessica MeyersAug 25, 2025
Why can't I pair my Yamaha NX-B55 with another device?
- H
  haley53Aug 25, 2025
  There are several reasons why you might be unable to pair your Yamaha speakers with another device: * Pairing should be done within 5 minutes of turning on the unit or stopping the Bluetooth connection with the other device. * The other device might not support A2DP; ensure it does. * If using a Bluetooth adapter, its passkey must be “0000.” * The devices might be too far apart; reposition the unit within 10 m (33 ft) of the other device. * Interference from devices outputting signals in the 2.4 GHz frequency band (like microwave ovens or wireless LANs) could be the issue; move the unit away from such devices. * A Bluetooth connection might already be established with another device; stop that connection first.
J
Jorge LambAug 26, 2025
How to fix Yamaha Speakers when noise is heard?
- D
  Dr. Nicholas LoweryAug 26, 2025
  If you're hearing noise from your Yamaha speakers, consider these potential causes and solutions: * Check that the connections are made correctly, as faulty or incomplete connections can cause noise. * Ensure that the stereo mini jack and stereo mini plug cable are clean, as a bad connection at the output connector can introduce noise. If dirty, clean them. * Move the unit away from devices emitting electromagnetic waves, such as mobile phones, wireless appliances, microwaves, or inverter lighting equipment. * Try changing the power supply source by directly connecting the AC adapter to the wall outlet to address potential power-supply noise.
J
Justin JohnsonAug 29, 2025
Why is the auto-standby feature not working on my Yamaha Speakers?
- T
  Theresa GarciaAug 29, 2025
  If the auto-standby feature is not working on your Yamaha speakers: * Check if the AUTO STANDBY switch is set to OFF. If so, set it to ON. * The unit might be catching external noise. If it is close to mobile phones, radio devices, microwaves, inverter lights, etc., install it away from them.
D
David RodriguezAug 31, 2025
Why isn't the auto-power on working on my Yamaha Speakers?
- R
  robertsharoldAug 31, 2025
  If the auto-power on feature isn't working on your Yamaha speakers: * The volume of the other device might be too low; increase its volume level. * The played audio might be too short. The unit will not turn on if the duration of the sound is short, such as a click.
A
Alexander RhodesSep 2, 2025
Why is there no sound from my Yamaha Speaker System?
- M
  Michael WilliamsSep 2, 2025
  Several factors could be at play. Ensure the unit and the connected device are correctly connected and that all connections are secure. The volume on the Yamaha Speaker System might be too low, so adjust the volume control. Check the volume of the connected device as well, and make sure headphones aren't connected, as they mute the speakers. Also, verify the AUTO STANDBY switch at the rear is set to ON or OFF, not INIT.
M
Michael FigueroaSep 3, 2025
What to do if my Yamaha Speaker System won't turn on?
- J
  Jordan HowellSep 4, 2025
  First, ensure the AC adapter is properly connected to both the wall outlet and the speaker system's 12V (DC 12V) input. Then, check if the power is turned on, the indicator light should be illuminated.
A
Amanda BlankenshipSep 5, 2025
Why does my Yamaha Speaker System sound distorted?
- X
  Xavier HuberSep 5, 2025
  The most likely cause is that the volume is set too high. Try lowering the volume on the connected device to see if that resolves the distortion.
J
Joshua BakerSep 7, 2025
How to fix noise heard on Yamaha Speaker System?
- J
  John GuerreroSep 7, 2025
  Check the connections to ensure they are secure and not faulty. Clean the stereo mini jack and stereo mini plug cable if they are dirty. Ensure devices emitting electromagnetic waves (like mobile phones or microwaves) are not near the unit. Try connecting the AC adapter directly to the wall outlet to change the power supply source.

Yamaha NX-B55 Specifications

General

Product color	Black, Titanium
Volume control	Rotary
Housing material	-
Recommended usage	Universal
Suitable for outdoor use	No
Speaker type	1-way
Driver diameter	70 mm
Number of drivers	1
Speaker placement	Tabletop/bookshelf
Audio output channels	2.0 channels
Impedance	6 Ω
Frequency range	- Hz
RMS rated power	14 W
Total Harmonic Distortion (THD)	10 %
Bluetooth	Yes
Bluetooth range	10 m
Bluetooth version	2.1+EDR
Headphone connectivity	3.5 mm
Connectivity technology	Wired & Wireless
AC input voltage	100 - 240 V
DC input voltage	12 V
Power source type	AC
AC input frequency	50 - 60 Hz
AC adapter output current	1.5 A
Power consumption (typical)	13 W
Cables included	Audio (3.5mm)

Weight and Dimensions

Depth	184 mm
Width	83 mm
Weight	2100 g

Summary

Important Safety Instructions

General Safety Precautions

Operating Precautions

Installation and Usage Guidelines

Auto Standby Function

Activating Auto Standby Mode

Explains how the unit automatically enters standby mode when no audio signal is received.

Deactivating Auto Standby Mode

Provides methods to disable auto-standby mode, either by volume adjustment or switch setting.

Auto Power On

Connections

Wired External Device Connection

Details connecting external devices via the 3.5mm stereo mini plug cable.

Wireless Bluetooth Connection

Guides on establishing a wireless connection using Bluetooth technology.

Bluetooth Music Playback

Pairing and Registration

Explains the process to register Bluetooth devices for wireless music playback.

Bluetooth Music Playback (Playback and Disconnection)

Playing Music via Bluetooth

Guides on how to play music wirelessly after a Bluetooth connection is established.

Auto Connection

Bluetooth Music Playback (Switching and Clearing)

Switching Bluetooth Devices

Clearing Pairing Data

Provides steps to delete all previously paired Bluetooth devices.

Troubleshooting

General Issues and Solutions

Addresses common problems like unit not turning on, no sound, or distorted sound.

Troubleshooting (Bluetooth)

Bluetooth Pairing and Connection Issues

Solves problems with pairing, connecting, or maintaining Bluetooth connections.

Troubleshooting (Playback Issues)

No Sound or Interrupted Playback

Addresses issues with missing sound, interrupted playback, or device recognition.

Status Indicator Guide

LED Indicator Meanings

Product Specifications

Technical Details and Dimensions

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