preface

▲ No matter how the TV market develops today, whether it is LCD or LED light source, whether it is large size LCD screen or curved LCD screen, it is just doing something on the screen, but listening in the audio-visual experience is increasingly ignored. After all, the LCD TV is thinner and thinner, which is inversely proportional to the playback effect of the audio system. Therefore, in recent years, the concept of TV sound has become popular, and various manufacturers have followed up and developed TV active sound systems that are different from the concept of traditional home theaters.

▲ The old audio manufacturer Rambler recently launched a B7 professional home audio system, which is also the first TV audio system equipped with a wireless subwoofer. From the perspective of system composition, it covers the concepts of TV audio and home theater. Is the B7 a professional family stereo? Follow me to have a look.

Unpacking ● Appearance

▲ The first time I saw B7, such an L-shaped package, I thought it would not be a "toilet". To make a joke, in fact, such packaging is not easy to crush during transportation, and the most important thing is not to lose any accessories, because the packaging box is integrated.

▲ Let's say this is the back of the box. The right side is a well painted surface. The B7 sound system is composed of an echo wall speaker and a subwoofer speaker. On the left is a large amount of text description information. We opened the box and said.

▲ Unpacking is very laborious. There is no fuss about the packaging of various foam packages and plastic dust belts. When the speakers and all the accessories were taken out, there was not much. B7 This sound system can place the echo wall speaker under the TV or hang it on the wall, so it is equipped with a metal hanging beam as standard.

▲ The accessories of the stroller B7 audio system include the power cable of the active subwoofer, 3.5mm one minute two audio cable, optical cable, remote control, and instructions.

▲ Don't underestimate the remote control of B7. Many important functions must be completed through it, not to mention the power switch, volume adjustment and selection of audio source input. The pairing of the active subwoofer and the host computer can only be completed by long pressing the "PAIR" button on the remote control; For Bluetooth pairing with digital products, the switching of theater, music and news modes should also be completed on the remote control. The size of the remote control is very small, and it uses a button battery.

▲ Rambler B7 audio system is the first SOUNDBAR TV audio system equipped with active wireless connection subwoofer; It adopts the industry-leading wireless KleerNet wireless audio transmission technology, with a delay of only 18 milliseconds. It works in the 5.8GHz frequency band with excellent anti-interference performance. The audio transmission quality can reach 2.37Mbps code rate, and the audio quality has no compression loss; Bluetooth 4.0 technology connects smart digital products to play music; DSP digital audio processing capability.

▲ The B7 host, also known as the echo wall speaker, uses full specification input terminals for connection. From left to right, there are optical fiber input interfaces, coaxial digital input interfaces, line input interfaces, and AUX analog input interfaces. You can switch a mode at will through the remote control and the host keys. You do not need to change the connection frequently for the access of different equipment, saving time and effort.

▲ On the left and right sides of the B7 host speakers, metal wire drawing panels are used, and the edge chamfering process is also used at the corners. It feels silky smooth and looks full. The right panel contains power on key, volume up and down key, and input audio source selection key. The buttons are also made of metal, which is really beautiful with the brushed panel.

▲ The B7 host speaker uses 4 mid bass units+2 silk film tweeters: 70mm mid bass units use metal aluminum basin diaphragm, with large Nd-Fe-B super strong magnetic circuit; The 19mm silk film tweeter, without a subwoofer, is more than enough for 6-unit speakers, 70w output, listening to news, and watching TV dramas and variety shows.

▲ The left panel of the host speaker does not fall into the stereotype. The English "APassion for Sound" represents the motto of the rambler "a spirit of sound". Think about the Chinese audio brand, which was founded in Zhongguancun in 1996 and has been developing vigorously for nearly 20 years since 2015. It should also be applauded for the domestic brand, which is also a reflection of "Made in China".

▲ B7 adopts the latest DSP digital audio processing technology, so the signal control will be more refined and the sound quality will be better. With dual TAS5707 high-power power amplifier, the undistorted power of the whole machine can reach 145W, which is full of passion and shock.

▲ An infrared receiver is installed in the middle of the host.

▲ The B7 main housing is made of PA6 nylon added with glass fiber, which is integrally molded. Compared with traditional ABS plastic, it has higher strength, greatly reduces resonance and box sound, and ensures pure sound quality.

▲ The dust cover of the host is designed with interwoven diamond pattern, which is not easy to break.

▲ The B7 woofer of the rambler is made of wood and designed squarely. Because of the inverted type, it is simple on all sides and has no unnecessary decoration. The backplane is equipped with a large air guide hole, power switch, bass volume adjustment knob, power cable interface, and matching keys.

▲ The subwoofer of Rambler B7 is equipped with an 8-inch large-diameter long stroke subwoofer, which is placed upside down in the subwoofer. I think this design can maximize the depth of low-frequency submergence. The output power of this subwoofer can reach 75W, and it can dive to 48Hz ultra-low frequency at the limit, which can shock the sound effect and make it extremely dynamic.

Shock ● Experience

▲ Walker B7 has its own Bluetooth function, which can be paired with mobile phones and other digital devices to play audio sources. I often listen to the music in my mobile phone or play children's songs for my son with my mobile phone without turning on the computer or TV, which is very convenient.

▲ The high frequency performance of rambler B7 is commendable, which can better show the female voice in music, especially the tooth sound; The female voice in the news broadcast has certain connotation; In the case of intense tension in the film, it will be weakened by mid frequency and low-frequency rendering.

▲ On the intermediate frequency, the overall performance is very commendable. Listen to the song "Daughter of Dabancheng" with eight eyes. Because of the length of the host, it is obvious to distinguish left from right, and the voice is front; Especially in the news broadcast, the magnetic voice of the male voice will make people feel particularly comfortable.

▲ On the low-frequency, the low-frequency dive is very deep. When playing the game "Tank World", the shells explode around you, and the low-frequency output is in place in time, which will make you sweat. When watching the movie Jurassic World, the roar of Tyrannosaurus Rex was released, which shocked people. Low frequency can well match the picture to give the audience a strong sense of empathy. But maybe it's because of the short time and the lack of boiling, I always feel a little vague, and I can't hit the target in one shot. There is a sense of unfinished business.

summary

▲ The stroller B7 professional TV sound system is not only a TV sound system, but also a home theater sound system because of the bass unit. At the price of 1000 yuan, we certainly can't give professional expectations to the sound performance, but there is still a market for TV viewers who love watching movies and listening to music. B7's outstanding high frequency, excellent mid-range performance, and exciting bass presentation provide consumers with another choice of home audio system.