Nux B-2 Digital 24 Ghz Wireless Guitar System Reviews

Blog Contribution: Monk Li( Taiwan ) Marketing Manager NUX | Cherub Engineering science.

Pete Thorn wrote a review Tone Tips: Going Wireless in 2018 on Premier Guitar, he also mentioned our NUX B-2 wireless.

As a modern musician, we have to know wireless more. Then allow's talk some basic knowledge about 2.4GHz and wireless.
Wireless is becoming more and more pop for musical instruments, merely we accept to know wireless is divided into UHF and 2.4GHz .
Outset let'south talk about UHF-Ultra Loftier Frequency. In fact, 2.4G is besides included in this frequency band. But ii.4G nosotros mean ISM, which is the universal channel. Now, two.4G is a universal channel that is open all over the globe, and UHF must apply for a license according to the frequencies opened by governments of all countries.
This is why major brands accept begun to move to 2.4GHz.
The almost difficult indicate for 2.4G to overcome is how to avoid the interference of the WiFi router, overcome latency consequence, and transmission length.

The working principle of ii.4GHz.

ii.4GHz is a general term, which is actually between 2.4GHz and 2.483GHz. (Come across Wikipedia)
Take Shure's 2.4GHz as an instance:

Shure cut the 2.4GHz band into nineteen bands (NUX B-5 also cutting into xix bands), fugitive the 3 bands with strong interference from WiFi devices and the 1 band used past the pairing code, so selected fifteen bands for working.
Professional 2.4GHz private protocol bandwidth is commonly 2MHz (worse digital compression probably use 4MHz bandwidth), plus 1 MHz of Ramp Up / Down, 4MHz bandwidth is required.

(83-viii) / iv = 19 frequency bands (both the starting time 4MHz and the concluding 4MHz must exist discarded)

As for frequency band cutting and data bundle size, there is a considerable human relationship between bandwidth. Information technology can be known from the above that the digital pinch algorithms of Shure and NUX are quite powerful, and the data packet tin can be processed very small. The most difficult matter for wireless transmission of musical instruments is how to shrink the data packets minor enough to go on high-fidelity sound reproduction. This is also the biggest deviation between this generation of NUX B-5RC and the previous generation NUX B-2, then information technology can finer reduce the power at the transmitting end and solve the trouble of high-frequency interference noise of agile pickups.

The abrupt-eyed friend may realize that when Shure is in Group1, the system latency is the shortest, which is almost 4ms. But in other groups, the system delay came to seven.3ms.
Because Shure uses FPGA instead of DSP, the latency of the arithmetic unit will exist shorter than that of NUX B-5 using DSP. (Shure can achieve 4ms in Group1, NUX B-5 < 5ms)

The method in Group1 is that each aqueduct of the transmitter uses 6 frequencies for transmission at a time (actually only three frequencies piece of work, for example, 2424 and adjacent 2425 really only have 1 transmitting, and at the same time, transmitting and receiving will detect the electric current working environment evaluates whether automatic frequency hopping switching avoids interference.), And the receiver simply needs to receive a data packet of one of the 3 frequencies. At this time, the receiver does not return a signal to the transmitter, so only in one case transmission can minimize the latency. All the same, since there is no Protected Admission, Shure uses half-dozen frequencies at a time to have into consideration the frequency hopping during work to avoid bespeak drop. (The more transmission frequencies, the lower risk of point dropping, and the fewer transmission frequencies, the college take chances of signal dropping.)

Notation: NUX too adopts the method of 3 transmitting frequencies but does not have frequency hopping during work (mainly considering that B-5'southward compact size,
low power consumption and standby time), while the Dominate WL series and Line6 G10 just use two frequencies to transmit, so it volition be more susceptible to interference than the B-5. Therefore, the point stability is Shure GLXD> NUX B-5> Boss WL / Line6 G10.

The method of Group2 is to transmit at iii frequencies + the receiver notifies the transmitter to hop:
Because this method is to inform the transmitter whether to switch frequency hopping through the receiver, the organisation latency comes to 7.3ms.
Just the advantage is that the probability of missing data packets is lower than that of Group1. So information technology is besides the choice of the balance betwixt latency and missing packets.

Group3's approach is to transmit at 2 frequencies + the receiver notifies the transmitter to hop:
For instance, Group3 / Channel1 uses 2415, 2416, and 2443. In fact, only one of 2415 and 2416 transmitted, and 2443 is transmitted in sequence. At this time, the receiving end only needs to receive 1 data from them. If the current 2415 will drop the packet, the receiver will notify the transmitter to leap to frequency 2416 to work.
The biggest difference between Group3 and Group2 is to sacrifice the chance of dropping packets to see the possibility of eight groups of devices working at the same time.

The method of Group4 is like to the Bluetooth advice protocol. It adopts the method of cyclic transmission. The reward of this method is that the possibility of dropping packets is minimal, but the disadvantage is that the system latency is very long. And this makes it impossible to work with other equipment at the aforementioned fourth dimension.
So Group 2, three, 4 is the choice between "the quantity of simultaneous working groups" and "the probability of dropping packets."

Therefore, the 2.4GHz wireless system is a kind of trade-off between "signal forcefulness", "transmission distance", "pickup noise interference", and "digital pinch algorithm to reduce bandwidth" and "keeping high-fidelity sound quality".
The nearly hard part is the " digital compression algorithm ", considering this product tin be called a "professional product" only if it can effectively shrink the package and keep high-fidelity sound quality.

Supplementary notation: The shortest latency of B-5 system can be 3.8ms ～ the longest is about 4.8ms:
B-five uses iii frequencies for transmission, and the 3 frequencies send out signals in sequence. If the receiver receives the kickoff transmission, the organisation latency volition be the shortest three.8ms. If it is received on the second transmission, Arrived, it is about four.3ms. If information technology was received on the third transmission, it would be 4.8ms long.

NUX B-5RC two.4GHz Wireless System
B-5RC wireless system fits in perfectly with all types of electric guitar, acoustic-electric guitar, bass guitar, Ukulele. Enhanced past the latest wireless technology innovation and upgraded algorithm, B-5/B-5RC can now work well with instruments that equipped with active pickups.

Moreover, it comes with the basis-breaking motorcar-matching system which allows yous to bask consummate freedom without any setup. Savour, have fun & stone on.

No buzzing/humming with active pickups.
Yous're looking at the most compact wireless system that works well with active pickups. No more than buzzing, humming, high-pitched noise,this system simply delivers crystal clear guitar tone audio @ 24-bit/44.1kHz with less than 5ms latency.

Auto-matching arrangement: no setup required.

Forgot about the channel-matching affair, B-5/B-5RC can work direct out of the box. Just plough on both the transmitter and the receiver, plug them to your guitar and amp accordingly, and y'all're good to go.

Stay charged, always!

System Latency <5 ms

Big Dynamic Range 112dB

For a consumer-grade wireless product, the dynamic range of 112dB is already considered to be excellent. The boilerplate digital effects are almost in the vicinity of the dynamic range of 110dB.
Notation: The dynamic range of the entire Dominate WL series is 110dB. The sampling rate of Line six is basically less than 44.1KHz, and the Xvive is virtually 105dB. Only the Shure GLX-D has reached a very loftier level of 120dB.

Ultra-low system dissonance
When using 1K frequency to test the system noise, the system noise of B-5 is about -130dB, which is almost 3uV.

Notation: Generally speaking, the system racket of fantabulous audio equipment is acceptable within -120dB. (Probably 10uV) And the white noise like a guitar amplifier is basically larger than the B-five.

Ultra-loftier system Headroom
B-v can start to be distorted up to two.2Vrms, which translates into a betoken range of two.two x ± (√two) = ± 3.263 V
Note: The signal range of the passive guitar is almost ± 1V
Active guitar signal range approx. ± 2V
Active bass indicate range approx. ± 3V
So this is enough to prove that B-5RC is used for agile circuits and agile basses, and there is no problem! !!

Optional Cable Tone simulation
The B-5RC provides Cable Tone simulation of about 3 meters length. Afterward turning on the power, as long as the receiver push button is pressed briefly, the indicator light turns orangish to represent Cable Tone.
The pinkish line is the frequency response curve of the Cable Tone, and the scarlet line is the frequency response curve of the normal manner.
Compared to the Line6 G10 fixed blazon, which can't choose to appoint or disengage the Cable Tone, and Dominate also distinguishes between WL-xx and WL-20L models with or without Cable Tone, the NUX B-5RC is very friendly.

All types of guitar jack friendly

Comparison Nautical chart
What'southward the difference betwixt B-v , B-2 and others?

NUX B5-RC works like a guitar cable merely offers wireless freedom. Setting upwards the organisation is uncomplicated: choose your channel on the Transmitter & Receiver, and is ready to go.

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Source: https://nuxefx.blogspot.com/2019/12/something-you-should-know-about-24ghz.html