[Rambler B7 Professional Home Audio] Create your own private theater, Rambler B7 Professional TV Audio | Love Computer

Create your own private cinema

Wanderer B7 Expert TV Audio

△ With the popularity of network boxes and smart TVs, we can easily enjoy various popular video programs at that time. Now, the increasingly clear high-quality film sources have slowly brought us into the 4K era. And TV sets are becoming bigger and bigger under this general trend, so that we can find shocking pictures like cinemas at home. That's the question. What's the sound effect of watching blockbusters on TV? I think everyone is very clear and can only use "hehe" to describe it. The TV screen becomes thicker and thinner, leaving less space for speakers. This is contrary to the physical characteristics of speakers. It is difficult to get an ideal listening experience in a narrow space. If there is no shocking sound in a movie blockbuster, the effect will be greatly discounted.

△ In order to pursue immersive sound effects, some audiophiles often set up professional home theaters at home, which is naturally suitable for players with ample funds and spacious houses. At the same time, it also has high requirements for the placement of speakers and the matching of equipment, which requires a certain amount of professional knowledge as the basis. So for non professional video lovers, how can they easily get shocking sound effects when watching blockbusters? The B7 expert TV stereo launched by Rambler is sure to help you realize this wish. B7 is composed of a horizontal SOUNDBAR+a wireless low cannon, and supports Bluetooth and multiple audio interface audio source access, with strong connectivity and scalability. The subwoofer uses advanced wireless technology to connect, so it can be placed freely and freely. The overall sound performance of B7 needs to get rid of the TV speakers. I don't know how many streets there are. It can completely achieve the effect of an entry-level home theater. And the price of 1399 yuan is believed to be accepted by many video lovers.

△ Rambler is a well-known domestic audio brand, and also a very design oriented enterprise. With excellent industrial design strength, many of its products have won world-class design awards. As an expert TV stereo, the appearance design of B7 adopts the current popular simple style, with the classic and versatile black as the main tone. It has a strong flavor of traditional household appliances and can be well integrated with different home environments. B7 adopts two-way TAS5707 high-power digital power amplifier, with a total rate of 145W. The distribution mode is: high-frequency 16W x 2, intermediate frequency 19W x 2, low-frequency 75W, and the frequency response is 48Hz~20Hz. For small and medium-sized living rooms with an area of about 20~30 square meters, it is enough to obtain a sound effect like a blockbuster.

△ The main speaker adopts the horizontal cylindrical box structure of SOUNDBAR, with a triangular cross section and a gentle arc transition between the vertices. This design not only improves the aesthetic sense visually, but also makes the front of the speaker show a small elevation angle in acoustics, so that the sound from the speaker can reach the human ear more directly. The length of SOUNDBAR is relatively moderate, reaching 1 meter. It will have a good overall effect with mainstream TV sets of different sizes, whether horizontal or hanging.

△ In the SOUNDBAR part of B7, a one-time forming high-strength composite shell is used, and glass fiber PA6 nylon is added inside, which is much stronger than ordinary ABS plastic, and can greatly reduce the resonance problem. In actual use, there will be no buzz when the sound is turned on very loud. The inner part is divided into three independent parts, the middle area is placed with power circuit, and the two sides are spaces for the left and right acoustics systems. Each channel is composed of one high frequency unit+two intermediate frequency units, and uses the forward backward design. This audio scheme with multiple IF units can increase the area of air pushed by the diaphragm, and to some extent, make up for the lack of low frequency performance of the small box.

△ The 19mm silk ball top unit is selected for high frequency. The unit made of this material is often delicate, round and transparent, and has good hearing resistance. The high-frequency unit is installed on the left and right edges of the SOUNDBAR, so that the design can obtain a better sense of sound positioning. This is also true in practical use. Playing some stereo sound sources can clearly distinguish the difference between left and right channels.

△ The medium frequency unit adopts 70mm long stroke aluminum basin diaphragm, which is matched with large size Nd-Fe-B super strong magnetic circuit, and performs very actively during operation. Even if the subwoofer is not turned on, it is enough to meet the demand for watching TV dramas, news and entertainment programs. However, the workmanship of the IF unit is somewhat rough. There is some exposed glue at the edge of the diaphragm. Fortunately, it is hidden inside after the speaker mesh is covered. B7 does not use the traditional frequency division method, but uses DSP digital audio processing technology to achieve more refined control of audio signals.

△ The B7 subwoofer is moderate in size, and uses KleerNet high-quality wireless audio transmission technology, which eliminates the tedious wire connection and placement is no longer constrained by wire. This KleerNet wireless audio technology works in the 5.8 GHz frequency band that is not easy to conflict and has good stability. At the same time, the delay is only 18 milliseconds, and the 24Bit/48KHz audio signal can be transmitted over 10 meters without compression.

△ The surging low frequency is crucial to the contrast of the large atmosphere, and this surging effect is achieved by relying on large caliber speakers. The subwoofer of the rambler B7 adopts a reflective structure to the ground. The wooden box is equipped with an 8-inch long stroke woofer. At the same time, it provides 75W undistorted power to drive, so that its low frequency can reach 48Hz. The panel of the box is 1cm thick, which is strong enough for this small volume subwoofer. The four legs adopt the same triangular appearance as the SOUNDBAR section, and the top is also equipped with rubber anti-skid pads, so that they can be more firmly attached to the ground.

△ The installation and connection are also quite simple. The horizontal TV can place the SOUNDBAR in front of its base, and the TV hanging on the wall can also use the attached rack. It is very easy to install the SOUNDBAR under the TV, almost occupying no space. All interfaces are set behind the SOUNDBAR, and the interface styles are quite rich, including: optical fiber interface, coaxial interface, RAC audio interface, 3.5mm audio interface. These interfaces cover almost all mainstream interfaces, and can be connected to set-top boxes, game consoles, televisions, computers, and other devices.

△ Of course, B7 has also added the popular wireless Bluetooth connection mode, and used the latest Bluetooth 4.0 transmission technology to meet the needs of high-quality wireless audio transmission. Built in British CSR high-quality wireless Bluetooth module, the transmission distance can reach more than 10 meters, and normal signal transmission can be maintained even in a room apart in the actual environment. In this way, you can freely share the voice of mobile digital devices such as mobile phones, tablets and so on to Rambler B7 via wireless.

△ Since the subwoofer is connected wirelessly, it does not need additional audio cables. It can be used only by plugging in the power cord and turning on the switch, so the back of the subwoofer looks very clean. The large subwoofer guide hole above is eye-catching, and the curved edge can effectively reduce wind noise, making the surging low-frequency more pure and natural. The lower knob is responsible for the increase or decrease of the low-frequency sense, and there is a red indicator light beside it to prompt the working status of the subwoofer.

△ The overall function setting is also quite clear, which can be operated through the remote control or the buttons on the machine body. There are four physical buttons on the right side of SOUNDBAR, which are used to switch, increase/decrease the volume, and switch the sound source. It is easy to use without the manual. The silver buttons stand out against the black metal brushed panel, and the edge of the metal panel has also been processed by CNC trimming process, further increasing the sense of refinement.

△ In order to achieve all the functions, I need to use the remote control. The remote control gives me the feeling that it is relatively cheap, and CR2032 button battery is used for power supply. In addition to the switch, volume increase/decrease, and sound source switching functions on the body buttons, the remote control also has mute, Bluetooth pairing, and movie, music, and news sound effects. It's just a bit of a wonderful design. I don't know why the remote control has two buttons for volume up and volume down.

△ At the center of the front of SOUNDBAR, an indicator is hidden below the logo of the stroller, and different working states of the audio can be distinguished by lights of different colors. The red light indicates working in fiber/coaxial mode, the green light indicates working in LINE in/AUX mode, and the blue light will light up in blue mode. The brightness of the light is not high, and it will not interfere with watching TV with the light off at night.

△ Although the wireless subwoofer is no longer constrained by the audio cable, the positioning and adjustment are still particular. The low-frequency sound signal that the subwoofer is responsible for is not very directional, and you can choose from the left and right sides at will. It should also be noted that the B7 wireless subwoofer is rear oriented, and it is best to keep a certain distance from the wall, especially to avoid the corner. The more the bass is, the better it is. It is better to adjust it to the natural connection with the low frequency lower limit of the SOUNDBAR. The most ideal state is to achieve the state of having a gun like no gun. I adjust the volume knob of the subwoofer to the 9~10 o'clock position, and then I can get a more natural connection effect. If you are a bass controller, don't hesitate to turn up the volume to the maximum, and the booming bass will keep coming.

△ B7 has three built-in sound effects: film, music and news, which basically cover all the daily sound types of television. The adjustment of different sound effects is also very different from each other. For example, watching news, variety shows, and TV dramas, which focus on dialogue, can turn on the "news sound effect", which can make the contour of the voice clearer and more prominent while reducing the low-frequency correspondingly. Compared with the voice of TV, it has a quite obvious improvement. When listening to music, adjusting to "music sound effect" will increase the vocal thickness to a certain extent. The low frequency will increase slightly, but the subwoofer is not active, which is more suitable for playing pop music. The most obvious thing about the "movie sound effect" used in watching the blockbuster is that the subwoofer has become quite active, converging the mid frequency part, and the overall sound line has become slightly extended to the poles, providing a broader space atmosphere. Whether it is shooting or aircraft cannon, it has a kind of cinema like shock effect, and has a strong sense of bringing in when watching blockbusters.

△ What surprised me was that even if the subwoofer was turned off when the "movie sound effect" was turned on, SOUNDBAR could provide a sense of low frequency that was close to a 5-inch bookshelf box. The subwoofer does not dive too deep. It has a certain momentum but a slow sense of speed. It has good control when the volume is not too large, and can fully meet the needs of setting off the atmosphere in a small space. At the same time, the excellent high-frequency unit also impressed me deeply. The bright but not exciting style provides an excellent sense of positioning when watching movies. The overall sound performance of B7 is more inclined to the sound characteristics of the cinema system, which also limits its performance in professional music appreciation. After all, in the eyes of Shaoyou, cinema and music HIFI are products in two directions, so you can't have both fish and bear's paw. Of course, it's OK to listen to music with B7, but it's not as good as watching movies.

△ Watching movies is one of the important recreational activities for young people, and the difference between home and cinema is often due to the key sound effect. With the popularity of online TV boxes, it is easy to obtain a large number of high-quality film resources through the network. At this time, if there is a stroller B7, it can create a cinema like shock effect at home. B7 has a fashionable and simple appearance style, rich connection ability, and a large caliber wireless subwoofer, which is also placed and installed quite casually. Although the price of 1399 yuan is not too high, the improvement of TV sound is quite obvious. However, there are also some shortcomings. For example, the sound connection between the subwoofer and SOUNDBAR is not natural, the upper limit of the subwoofer's frequency is too low, and the intervention under the "music sound effect" and "news sound effect" is not very active. But the overall performance is quite good, which can achieve the effect of entry-level home theater. If you are an audiophile with a small budget and limited space, you can try this stroller B7 expert TV stereo to build your own private theater at home.

The article on the trial of iGo is completed by netizens, which does not represent the views of this website.