NUX B-8 Professional 2.4GHz Guitar Wireless System User Manual
- June 14, 2024
- NUX
Table of Contents
B-8 Professional 2.4GHz Guitar Wireless System
User Manual
B-8 Professional 2.4GHz Guitar Wireless System
WARNING
To reduce the risk of fire or electric shock, do not expose this appliance to
rain or moisture.
FCC Warning
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:(1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
TX FCC RF exposure statement:
The device has been evaluated to meet general RF exposure requirement. The
device can be used in portable exposure condition without restriction.
RX FCC RF exposure statement:
The equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance between 20cm the radiator your body.
Overview
Thanks for choosing the NUX B-8 wireless transmitting system!
NUX B-8 is a wireless system with automatic setup, 2.4GHz interference-free
broadcasting frequency, and 24-bit 48 kHz high-quality audio. The signal
transmitting latency is as low as 2.5ms at peak performance. The operation
range is up to 60 meters (200-feet). It fits all types of electric guitar,
electric-acoustic guitar, bass guitar, and various instruments with electric
pickups. The user-friendly matching system makes it easy to use, just turn on
the TX & RX and it will be paired within a couple of seconds. Each wireless
set has a unique pairing algorithm, it automatically detects each other and
configures their own IDs.
It also comes with a build-in booster and well-designed digital tuner with
Chromatic, Guitar Standard, Guitar Compensated, Bass tuning modes, which are
very useful for musicians to perform with on stage.
Features
-
Operating Frequency Band: 2400-2483.5MHz
-
Audio Quality: 24bit / 48kHz
-
Operation range:
-
Indoors: Up to 30 m (100 ft) typical
Up to 60 m (200 ft) maximum
Outdoors: Up to 20 m (65 ft) typical
Up to 50 m (165 ft) maximum -
Frequency Response: 20Hz-20kHz
-
Latency: >2.5ms
-
THD+Noise: Less than 0.01%@1kHz
-
TX battery: Up to 6.5 hours lifetime
-
Tuing accuracy: ± 1cent
-
Tuning range: F#0 to C8
-
Tuning mode: Chromatic, Guitar standard, Guitar compensated, Bass
-
Boost level: 0dB-12dB
Control Panel & 10s
TX (Transmitter)
POWER ON/OFF/MUTE button
Hold this button to power on or power off the TX. When the TX is powered on
and paired with the RX, you can press this button to mute the audio output.
CABLE TONE ON/OFF switch
The T¥ features a cable tone simulation which is normally used for some guitar
players to get a warmer sound. If you want it, you can pull the switch and
turn it on.
LED display When you power on the the TX, the LEDd1splay:
Green: battery level >75%. When the TX is in process of pairing with the RX,
the LED blinks in Green.
When the TX pairs with the RX, the LED lights in Green When you power on the
the TX, the LEDdisplay:
0range: 75% battery level >50% When the TX is in charging, the LED lights in
Red. When you power on the the TX, the LED display:
Red: 50%battery level>15%
Red blinking: 15%battery level> 0% (the TX will be off soon).
When the TX fails pairing with the RX, the LED blinks in Red. When the TX is
in MIJTE, the LED lights in Red.5
1/8″INPUT jack
Connect your guitar or any instrument with a 1/4″audio output to the INPUT
jack. lease rotate the nut to lock the cable to the INPUT jack. USB-C Port
This USB-C port is used to charge the TX. Please connect it with a 5V/500mA(or
more) adapter to charge the TX.
RX (Receiver)
LCD display
High-definition color LCD display.
HOME button
Press it to return to the home screen.
SELECT/PARA knob
Press it to enter to the setting or confirm a setting. Rotate it to select an
item or adjust parameters.
BACK TO button
Press it to return to the settings.
FOOT SWITCH
Press ii to tum on/off the TUNER(default) or BOOSTER.
DC 9V jack
Connect the included adapter (ACD-006A) to this jack to power on the RX.
USB-C port
Connect the RX to your computer with a USB cable to update the firmware.
01 OUT jack
This is for balanced output signal. With the DI OUT jack, you can connect the
RX to an amplifier, a mixer or an audio interface with a balanced cable.
LIFT/GND switch
Switch between lifted and grounded for the DI output.
1/4″OUTPUT/SEND jack
Connect the RX to an amplifier with this jack. You can loop your effect pedals
to RX with this jack for SEND (send the signal to your effect pedals).
1/4″RETURN jack
You can loop your effect pedals to RX with this jack for RETUAN(return the
signal to from your effect pedals to the RX).
1/4″RETURN OUTPUT
When using SEND/RETURN to loop your effect pedals to the RX, please connect
the RX to an amplifier with this jack.
1/4″INPUT jack
When the TX is powered off, you can connect your guitar or instrument to the
INPUT jack. When you plug in a 1/4″cable to this jack, the RX will detect it
and switch to “CABLE IN” mode. In this mode, you can only access the TUNER,
DISPLAY setting and TUNER setting. 
How to operate
Matching the B-8 is very easy as it is pre-paired from the factory. Just turn on the transmitter and the receiver; they should detect each other rapidly and automatically choose the best channel to establish a stable connection.
- Push and hold the power button to turn on the transmitter and power on the receiver, then the TX & RX will be automatically paired with each other.
- The RX will show input level, signal transmitting level and TX’s battery level on the screen
- Plug the cable to the TX’s 1/8″input jack and rotate the nut to tighten it to the TX.
- Fix the TX on your strap.
- To achieve the best performance of transmitting, please fix the TX on your strap and use it as below. In this way the TX will have a distance from your body, which is good for transmitting.
- Connect the RX to your amplifier or mixer. Enjoy!
- You can press the foot switch to turn on/off the TUNER or BOOSTER.
*You can switch between TUNER and BOOSTER for the foot switch in
system setting as below. When you choose you can hold the foot switch to turn on/off the
TUNER.
When you choose you can hold the foot switch to turn on/off the BOOSTER (a BOOST icon will be shown on the screen).
Connections
Application 1
Connect your guitar to the TX, and connect the RX to an amplifier or a mixer,
or both. 
When the TX is powered off, you can
directly connect your guitar to the RX’s INPUT jack.
Application 2
Connect your guitar to the TX, and connect the RX to an amplifier or a mixer,
or both. You can loop your favorite effect pedals via SEND/RETURN jacks to the
RX. 
When the TX is powered off, you
can directly connect your guitar to the RX’s INPUT jack. 
Recharging the TX
There are two ways to recharge the TX.
-
Recharge the TX by RX.
Power on the RX and put the TX in charging position on the RX. The TX’s LED will be lit when it starts to charge the battery. -
Recharge the TX with a 5V/500mA adapter via the USB-C port.
Tips and Methods to Improve Wireless System Performance
If you encounter interference or dropouts while using the B-8 wireless system,
try the following suggestions:
- To get the best performance, please check if there is any WI-Fl devices around and set the B-8’s TRANSMIT TING at the best position between low latency and stable.
- Make sure the TX is well charged and powered on.
- Make sure there’s no large physical objects in the line of sight between TX and RX.
- Reduce the distance between TX and RX. For example, when using B-8 wireless system on stage, the RX can be placed closer to the TX on the stage and connected to the mixer or amplifier via a long cable.
- When using 2 sets or more B-8 wireless system, please keep each of TX and RX more than 1 meter (3 feet) apart.
- Move receiver further away from Wi-Fi access points, computers, Bluetooth devices, or other active 2.4 GHz sources.
- Disable non-critical Wi-Fi on computers, cell phones, and other portable devices.
- Avoid heavy Wi-Fi traffic activities such as downloading large files or viewing a movie.
- Avoid placing transmitter and receiver where metal or other dense materials may be present.
- During sound check, mark trouble spots and ask presenters or performers to avoid those areas.
- The best dictance of using is 10m-35m.
- The best direction of using please refer to the picture below. The RX and TX won’t be blocked by player’s body.
System setting
DISPLAY Setting
Customize your own Boot-up Picture
You can upload a GIF picture and set it as the Boot-up Picture following below
steps.
- Download the “NUX GIF Customizer” application on www.nuxefx.com.
- Select the “UPLOAD PICTURE” and confirm, and then connect the B-8 to your computer via the USB-C port.
- Upload JPEG, GIF or PNG pictures to the app and edit them.
- Preview and load the GIF to B-8.
Transmitting setting
You can adjust the transmitting parameter between LOW LATENCY and STABLE.
When you set it at the far-left position, the transmitting latency will be the
lowest (approximate 2.5ms).
When you set it at the far-right position, the transmitting will be set for
anti-interference. This is for users who want more stability in various
settings where nearby WI-FI devices can cause interference to the wireless
transmission. In this setting, the transmitting latency will be a little bit
higher (approximate 8.7ms). To get the best performance, please check if there
are any WI-Fl devices around and set the B-8’s transmitting at the best
position between low latency and stable. 
Tuner setting
- Choose your favorite tuning display.
- Choose your favorite bypass mode when you’re tuning your guitar.
Foot switch setting
Choose the priority function for pressing the foot switch. 
when you choose you can
hold the foot switch to turn on/off the TUNER.
When you choose you can hold the foot switch to turn on/off the BOOSTER (a
BOOST icon will be shown on the screen).
Output level setting
Setup the output volume. Boost setting
Setup the boost level for the BOOSTER. 
Re-Match ID & Pairing Manually
The IDs of the transmitter and the receiver of each B-8 set are pre-matched
in the factory. For any reason you want to re-match IDs or pair a receiver
with a transmitter from different sets, follow below steps:
- Turn off the TX (transmitter). Power on the RX(receiver) and it shows SCANNING… on the screen. Then, press and hold the foot switch for 2 seconds, it will show “PAIRING … “as below on the screen.
- Press and hold the TX(transmitter)’s ON/OFF button for 4 seconds, the TX’s LED light will blink in GREEN, and then the TX and RX will start to pair with each other.
- When the pairing succeeds, it will show “PAIRED” 0on the screen.
- When you have 2 sets or more B-8 wireless and want to re-pair them, please turn off all units and re-pair them one after another.
Specifications
-
Operating Frequency Band: 2400-2483.5MHz
-
Audio Quality: 24bit/48kHz
-
Frequency Response: 20Hz-20kHz
-
Latency: 2.5ms(best performance setting) – 8.7ms(safety mode)
-
Input Impedance: 1 MQ
-
Maximum Input Level: 1kHz at 1% THD +6.2dBV (5.78 Vp-p)
-
THD+N: 0.01 % 1kHz, typical
-
Dynamic Range: 122dB, A-weighted(OUTPUT/SEND)
-
Output level Adjustment Range: Mute -64dB–0dB
-
Auto-sleep Mode: N/A
-
Built-in Battery Capacity: 3.7V/500mAh Rechargeable Li-polymer (Transmitter)
-
TX Battery: Up to 6 hours lifetime
-
Power Requirements: 7V to 12V DC, 500mA min, negative tip power supplies(Receiver)
-
Operation Range:
Indoors: Up to 30 m (100 ft) typical
Up to 60 m (200 ft) maximum
Outdoors: Up to 20 m (65 ft) typical
Up to 50 m (165 ft) maximum -
TX Dimensions: 72.5mm(L) x 49.3mm(W) x 23mm(H)
-
TX Weight: 63g
-
RX Dimensions: 122mm(L) x 95mm(W) x 60mm(H)
-
RX Weight: 500g
Accessories
• 6.35mm to 3.5mm audio cable ·USB-C cable •Adapter •Manual •Warranty card •
NUX Sticker
Cherub Technology Co., Ltd.
All Rights Reserved. No part of this publication may be reproduced, stored in
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prior written permission of Cherub Technology Co., Ltd. Made in China
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