He opposes buying machines for display, despising fancy functions, pursuing simplicity and focusing on individuality. In his eyes, music is an art that is good at beauty. The sound system is a tool for transmitting, expressing, and pouring this beauty, so it should not be divided into nobles and ranks. Therefore, even if Agu’s current theater room is much more professional than the previous small living room, it still does not abandon the original equipment, but only makes some adjustments to the audio and video equipment according to the size of the space.
A review of the equipment of the Agu Theater in the basement of Xiaoyangfang
Agu's audio-visual equipment, an Epson EH-TW2900 projector, this is a new product that was listed in foreign countries in May this year. It is also the trophy of Agu's Hong Kong travel this year. The Hong Kong version is priced at 14,000 yuan. The speaker is still the original B&W, although it is not a high-end model, but this speaker sounds quite pleasing people, especially for the replay sound, which is why Agu has not used the subwoofer.
Home theater overall layout
Since the existing audiovisual space is twice as large as before, the original B&W DM602 S3 can no longer cope with it, so Agu retired it as a surround speaker and re-purchased the Marten Design Miles II with a price of more than 30,000 yuan. The speaker, this is a very controversial speaker, but Agu moved it to his new home for the first time.
The amplifier is the original Onkyo TX-SR876 (market price of 12,500 yuan), I thought it could not wait for the Marten Design Miles II, but I can't think of it, it can also create a dynamic effect in the basement. The center box is not simple. It is B&W Nautilus HTM2 for 11600 yuan. The player is a Sony PS3 Slim 120G and HTPC, a pretty good pair.
Renovation made three key points in the acoustic treatment of the wrong theater
It stands to reason that Agu this audio-visual room is quite perfect, the size and proportion of the space is good, the speaker placement is also based on evidence, but why the sound always feels awkward, most of the equipment is still the original equipment, but why does it sound like no same. After repeated listening and observation, Agu finally found that there were mistakes in the renovation measures.
During the renovation, I made a mistake because of poor consideration.
Generally speaking, the sound emitted by the speaker is mainly transmitted to the listener's ear through six tasks. The first is the direct sound from the speaker; the second is the reflection of the ceiling; the third is the reflected sound of the floor; It is the reflection of the back wall of the speaker; the fifth is the reflection of the walls on both sides; the sixth is the reflection of the wall behind the listener.
The six kinds of reflections come together and create a sense of space in the minds of the listeners. This is the sense of space. As long as any reflection condition of the sound wave is changed, the sound changes. Therefore, in order to obtain a good sound field, the intensity control of the reflected sound must be appropriate. Agu is due to improper control of the reflected sound, so the sound that enters the ear is a bit harsh, not stable and soft.
Heavy carpet is also a sound absorbing material
The focus of acoustic treatment on the room should be: first, focus on the side wall and ceiling; second, the treatment of sound waves should be more diffuse than absorption, in order to reduce the resonance intensity, to prevent excessive use of sound absorbing materials, so as to avoid room The reverberation time is too short (< 0.3 seconds) to make the sound dry and not round; thirdly, for the wall behind the speaker, it is best not to have a large piece of sound absorbing material, usually no need to deal with it, because the brick wall or cement wall will make The sound is full and full of energy.
In these acoustic treatments, Agu made a mistake. First of all, his audio-visual room absorbs more sound than diffusion. Ceilings, overhead wooden floors, and heavy carpets and wall tapestries are all good sound-absorbing materials. On the contrary, the proliferation measures did not pay attention, and there was no furniture other than a sofa chair. Therefore, this space is full of standing waves everywhere. The so-called standing wave is that the sound is reflected back and forth between the six walls, and it is combined with its own reflected wave to produce an effect of strengthening or weakening. The final wave becomes vibrating in place, no Will move the wave. The method of dealing with standing waves is diffusion.
In addition to the mistakes in sound absorption and diffusion, in the original Agu also made sound absorption on the back wall, hanging on the back wall with thick tapestry. [page] Agu re-layout sound studio sound perfect presentation
Recognizing the mistakes, Agu began to relocate the entire house. On the basis of not cutting the ceiling and the floor, Agu added diffusing plates on the side walls of the two sides. This is also the most ideal method for acoustic treatment. It is expensive and affects the appearance, which is difficult for the general family to accept. In addition, furniture and decorations are good diffusers.
Diffusion plate on the left
There is a popular saying in the industry: the more indoor objects are placed, the better the sound. Furniture and sundries absorb, diffuse, and reflect energy in the high, medium, and low frequency bands. They are the most natural absorption and diffusion bodies, but remember not to nail a large number of splints to the wall, and do not put a lot of room in the room. Apply sound-absorbing blankets and curtains. Otherwise, because the high frequency is absorbed a lot, it will cause the sound to dry, the details are reduced, and the volume is reduced.
Diffuser plate on the right
It is worth mentioning that the wooden doorless bookcase is a good sound diffuser, so Agu also moved two wooden bookcases without doors to the video room. When the diffuser is arranged, in order to make the sound spread well and not get back and forth together to become a harmful standing wave, it is necessary to change the course of the sound of the frequency, and it is necessary to pay attention to the board or device for diffusing the sound. Must be large enough, at least half of the wavelength of the sound, otherwise it is not enough to achieve the effect of changing the sound wave travel, such as the medium and low frequency of 100Hz requires more than 3.4m or 1.7m, the intermediate frequency of 1000Hz requires more than 34cm or 17cm.
Finally, the tapestry on the back wall was also demolished by Agu to restore the original cement wall. After a round of adjustment, the original sense of disharmony disappeared, and the sound of the ear became much more pleasant.
The latest and brightest Epson EH-TW2900 projectorThe EH-TW2900 is a new generation of 3LCD projectors launched by Epson this year. It uses D7 LCD panels and is clean, bright and natural. With 1920×1080p resolution, it has a contrast ratio of 18000:1 and 1600 lumens. At the same time, it supports the lens shift function, and the installation range is more relaxed, which is especially suitable for applications with small space. There is also a short-distance large-screen technology that allows home theater enthusiasts to project a 100-inch screen in just 2.98 meters.
Epson TW2900 projector
Epson TW2900 projector detail shooting
In terms of video processing, the EH-TW29000 is equipped with HQV12bit video processing chip and super-resolution function (SuperResolution) to further optimize the picture sharpness and details. The EH-TW2900 also has built-in dynamic, living room, nature, theater, theater black 1, theater black 2, X.color up to seven color modes, one-click operation immediately began to enjoy the screen. Epson's unique new E-TORL bulb, with a lifespan of 4,000 hours, is a veritable "power prince." Its standby power consumption is only 0.4W, which greatly reduces the user's power consumption and eliminates the worries of users.
[page] fascinating Marten Design and B&W speaker combinationMarten Design doesn't have a lot of speakers, but it's best known not for the Miles II in Agu's home, but the flagship Coltrane, which is known as the world's most expensive speaker because of the founder of Marten Desig. Designer Marten Olofsson did not count the cost of making the pair. The goal was to pursue the ultimate sound. The world's best and most expensive German Accuton diamond unit was chosen. The speaker cabinet was also made by himself.
Marten Design Miles II main speaker
Compared with the high-profile of Coltrane, Miles II is a bit unappealing, but its price of 30,000 yuan is acceptable. The same is the German Accuton unit, which is only changed from diamond to ceramic (the high school bass is also), its sound is quite worthy of the price of 30,000 yuan, there is absolutely information to challenge any opponent of the same price, because if it is adopted with Miles The other speakers in the same unit of II are far more than this price. Miles II sensitivity is not high, only 87dB, it is easier to wait, if there is a 400W power amplifier, it can play more instinct.
Marten Design Miles II main speaker
In general, Miles II is a two-stage speaker lower than Coltrane, but with a price, Miles II will certainly not lose six times. In the 30-square-meter audio-visual room of Agu, the thickness of the vocals, the texture of the instrument and the texture of the instrument are still fascinating, and the tone is still as transparent.
The B&W DM602 S3 was the original main speaker, but later Agu purchased the Marten Design Miles II as the main speaker and turned it back into a surround speaker. As the main speaker of B&W, the DM602 S3 is not weak, with a large speaker and a 180mm (7-inch) woven bulletproof fiber Kevlar mid-bass driver unit, which can produce a more stretched bass response and more High output capability.
B&W DM602 S3 surround speaker
In addition, the outer layer of the double-layer front baffle structure is molded by injecting mica polypropylene, which is strong and has excellent acoustic damping effect. The contour shape is fascinating, with a heart-shaped chord, and a round vertical edge reduces diffraction, eliminating the smearing effect that affects the detail of the signal.
B&W Nautilus HTM2 center speaker
The biggest advantage of the center speaker B&W Nautilus HTM2 is that it has a good performance in terms of dynamics, and the low frequency texture is good. It can respond well to the scenes in the drama, and has the right film depiction ability and live feeling, which means that the authenticity is strong, there is a good sense of movement, the details of the picture are clearly depicted, and there is a better layering. The dialogue is also clear, the characters in the film are outstanding, the voice is thicker, and the sense of hearing is full and full of energy. The intermediate frequency to high frequency performance is excellent, there is a good, natural frequency response, suitable for enjoying some classical music, classic old movies and other films that pay attention to sound quality and taste. Dynamic Balance EQ Function Onkyo TX-SR876 Amplifier
Onkyo TX-SR876 is a 7.1-channel AV amplifier that provides 175W×7 (6Ω) output. With exclusive VLSC technology and WRAT expansion line, the sound is clean and pleasing, quite good. In addition to inheriting the previous generation Audyssey 2 EQ sound correction system, SR876 also added Audyssey dynamic equalization EQ function, which can adjust the frequency range to different volume, so that the surround sound effect maintains the highest degree of reduction.
Onkyo TX-SR876 amplifier
In the audio section, the SR876 fully supports a variety of next-generation HD surround formats, including DTS-HD, Dolby Digital Plus and Dolby TrueHD decoding. Interface, the machine provides HDMI 1.3a standard interface, supports HDMI-CEC function, only through an HDMI cable to string all audio and video systems. [page] Perfect combination Sony PS3 Slim 120G+HTPC
Sony PS3 Slim is a new version of PS3, which is based on the original version of "slimming", body size reduced by 32%, weight reduced by 36%, power consumption reduced to 250W, is the original 34%, noise is also reduced More and more suitable for small space use.
Appearance, PS3 Slim is matte black, the original light touch button becomes a button type, it is not easy to cause a mistake. In addition to the improved appearance, the functional features are also different from the original models. The new PS3 has added BRAVIA Sync or HDMI-CEC shared remote control function after removing the Linux system support. In addition, the PS3 Slim eliminates the main power switch behind the fuselage and is in standby after connecting the power cord.
Sony PS3 Slim 120G
The most exciting thing for HD players is that the PS3 Slim can support the bitstream source output of two high-definition audio standards, Dolby TrueHD and DTS-HD Master Audio. Prior to this, the PS3 can only be converted to LPCM5.1 or LPCM 7.1 output by internal decoding, and now the Slim version finally allows players to experience the original Blu-ray HD audio.
Agu does not have too high a requirement for HTPC. His HTPc can meet high-definition playback and basic multimedia applications even if it meets the standards. Agu suggested that the noise of HTPC must be small. After all, no one is willing to enjoy the noise while enjoying the audio and video, so by using some low-noise boards (such as passive cooling boards) and low-noise hard drives and optical drives. achieve.
Presenting the professional level of the Agu video studio summaryAfter adjustment, Agu's audio-visual room has basically reached a high level of professionalism, and can play the best audio and video effects. In terms of video, Epson EH-TW2900 performs well in color, and the color is softer and softer. There is neither color cast nor too cold or gentle. The film's expressiveness is also good. The light and shadow transition naturally softens the face details and the hair is very clear.
Agu home theater playback effect
In the audio part, the main speaker is replaced by Marten Design Miles II, which undoubtedly increases the low frequency dynamics, and the flat ceramic of this speaker exerts its power, the thickness of the vocals and the texture of the instrument and the texture of the instrument are charming. The sound is very transparent, although it can't be compared with Coltrane, but it feels very good. Most importantly, there is no conflict between the main speakers and the sound between the B&W DM602 S3 and the center speaker B&W Nautilus HTM2 that have been changed to surround speakers. On the contrary, the fusion is very good. It is hard to hear that this is from different brands. Combined, the entire sound field is wide and stretched.
Guangzhou Ehang Electronic Co., Ltd. , https://www.ehangmobile.com