Notes with a factory where Arslab acoustics are made. Outdoor acoustics Average price category

Outdoor acoustic systems Hi-Fi and Hi-End class are called columns for home use. Acoustic systems of this type are used to work in stereosystems, complexes 2.1 or home theaters 5.1 and 7.1 as frontal satellites. Such acoustics has proven itself well, as it has good technical characteristics and sufficient power supply. Also these columns are made in a stylish design that complements the home interior and have a removable front frame with a protective grid for a more aesthetic appearance. Complete with floor acoustic systems are metal spikes. They are inserted or screwed into as legs to limit binding to the floor to avoid unnecessary resonances. Some manufacturers (,) firms (,) equip their systems with additional reasons.

Selection of outdoor acoustics

The choice of floor acoustics Hi-Fi and Hi-End class is a rather a prerequisite process in which it is necessary to thoroughly familiarize themselves with the technical characteristics of the system and competently select the power amplifier. The acoustic system should be one class with an amplifier, as well as correctly coordinate by power parameters and resistance. For a high-quality system, it is better to give preference to proven manufacturers, such as, and other. The power of the speakers is desirable to select such that the system worked in the nominal mode, that is, not exposed to long-term operation at the maximum power. Special attention should be paid to the parameters frequency characteristics. The wider indicators ( numeric value The lower threshold is less, and the upper threshold is greater), the wider the range of reproducible frequencies, which means the system will sound better.

When connecting Hi-Fi acoustics to the amplifier, high-quality acoustic cables should be used. Among music lovers it is believed that the acoustic cable is 30% of sound. The diameter of the cable should be used with a large cross section of the vein, as it provides the minimum resistance, and therefore better transmission Signal. High-quality outdoor acoustics both in the traditional way and type Bi-Wiring / Bi-amping is connected. In this case, the acoustic cable will be twice as much as two cables are used to connect one column, that is, the NCH and SC / RF system sections are switched separately and operate independently. To connect this type, the column switching terminals exist metal jumpers that must be removed before connecting. The type of such connection of acoustics can be viewed on models: ,.

Buy outdoor acoustics

Buy floor acoustics Hi-Fi and Hi-End class can be in this section, while checking an order as in online mode Through the basket, or by calling one of. In the case when you can not find a model in a prominently, or you have any questions, or you doubt the choice, be sure to contact our specialists according to the same contact numbers. We will be happy to help in choosing, we will advise on the configuration, we will advise the manufacturer, we will pick up the periphery and help save your tools with the best solution for your task.

Our company is not the first year in the market and won the confidence of many users. All products provided for order comes with official dealers, has certificates of compliance with quality, as well as the official guarantee from the manufacturer. Turning to us, you are guaranteed to get the best product for reasonable money.

Home acoustics has long been an ordinary part of everyday life, and the diversity of proposals of various manufacturers often discourages buyers. High price does not always guarantee good quality and realism of sound. The best columns are selected under the specific room, taking into account its features. All systems, depending on the installation site, can be divided into shelf, floor, wall and embedded. In the ranking according to the portal Mark.Guru is presented with better acoustics, divided into price groups. In each of them allocated the best model in its class.

To correctly pick up the speaker system better for your home, you need to consider the following:

Room features. This is the area, form, location of furniture and interior items, purpose. For rooms less than 18 square meters. m use polished acoustics. For more spacious - it is better to use outdoor acoustics. If you acquire a sound system for a bathroom or a bath, then the best solution will be moisture protection or heat-resistant embedded acoustics.
Amplitude-frequency characteristic. Often buyers mislead the frequency range that cheap models can even be wider than that of the highest system. It is much more important how true frequencies are reproduced. In the acoustics manual, there must be a graph displaying these characteristics.
Sensitivity. The indicator displays the possible volume of the sound depending on the subordinate power.
Real Sound. What is written in the documentation does not always correspond to reality. In addition, sound preferences are individual, and you may simply do not like how my favorite music sounds in the brand Hi-Fi acoustics. Be sure to check the sound before buying.
Number of channels. The choice depends on the purpose of the acoustic system. For music, 2-channel stereo systems will be suitable, and for realistic immersion in the plot of the film it is better to purchase systems 5.1 and higher.
Designer performance and materials. Since Hi-Fi acoustics is, including and part of the interior, then appearanceEspecially for expensive models, it matters. But remember that the best sound materials acoustic speakers Not necessarily will be natural. It is important to eliminate the reflection of sound from the surface of the material.

Budget options

Rating of the best home acoustic systems according to the portal brand. Buru starts with budget models worth up to 10 thousand rubles. For this money, you can choose quite quite good acoustics for both home theater and listening to music of any style.

1. SVEN HT-210

This is the shelf speakers from the Finnish manufacturer with the possibility of installing on the wall. The best acoustic system 5.1 in the budget category is perfect for home theater, includes 5 satellites and a subwoofer.

The package includes an optical cable and fasteners for mounting on the wall.

Maintenance specifications Systems:

there are 2 front, 2 rear speakers, central channel and subwoofer;
power of columns and central channel 15 W, subwoofer 50 W;
solid closed case;
active acoustics;
reproducible frequencies 40-20 thousand Hz;
there is a memory card connector, Bluetooth, radio.

functionality: the ability to save settings in memory, read files from USB media and memory cards;
the presence of a large number of connectors that allow you to connect to different techniques;
good AHC indicators, especially on average frequencies;
there is a remote control;
compactness with good quality sound, ease of installation.

Cons: not discovered.

Price: 7540 rubles.

Prices for SVEN HT-210:

2. BBK MA-970S

Inexpensive active shelf acoustics 5.1 with very volumetric columns.

It has a built-in decoder to convert stereo sound to multichannel.

Characteristics:

loudspeakers are made of MDF;
consists of two front and rear speakers, the central channel and the subwoofer;
power of columns and central channels of 40 W, subwoofer 80 W;
two-band front and central columns;
frequency range from 20 to 20 thousand Hz.

good subwoofer S. qualitative reproduction bass;
remote control;
the possibility of connecting K. sound card computer;
the presence of a stereo and built-in decoder.

short wires for connecting columns.

Price: 9580 p.

Prices for BBK MA-970S:

A set of acoustics for multichannel systems consists of two rear and one central column.

Characteristics:

shelf acoustics with the possibility of mounting on the wall;
range 80-30 000 Hz;
passive type;
mDF case material;
the sensitivity of the rear speakers 90 dB, rear 91 dB.

compactness;
two-band columns with magnetic protection;
comfortable mount on the wall;
not bad sound for its price.

Cons: not discovered.

Price: 7780 p.

Prices :

Medium price category

Here are more serious models, the price of which is ranging from 10 to 40 thousand rubles. In this category collected acoustic systems capable of satisfying more demanding requests for fans of high-quality sound. But at the same time the price of them is quite accessible.

Passive acoustic system with frontal outdoor speakers from the well-known manufacturer of sound equipment and electronics.

Characteristics:

consists of two front, two rear speakers and the center;
the sensitivity of the front is 83 dB, rear of 81.5 dB, and the center 88 dB;
frequencies from 40 to 30 thousand Hz;
cases are made of MDF;
3-strip frontal columns and 2-way central.

high-quality sound of frontal columns with good low frequencies;
mounting attachments included;
compact size;
high quality assembly and materials;
stylish design.

low-quality wires, which are included;
there is no subwoofer, which leads to insufficient reproduction of bass;
weak rear speakers and center.

Price: 20990 p.

Prices :

Shelf acoustics 5.1 with an active subwoofer is ideal for home theater in a not very large room.

The system has a stylish design and finishing with white glossy varnish.

Characteristics:

includes two shelf rear and frontal columns and an active subwoofer;
frequency 45-20 thousand Hz;
2-strip columns;
sabwofer with a capacity of 200 W;
sensitivity 86 dB.

high sound quality with compact sizes;
wall mounts included;
included there are gilded connectors;
high quality performance;
magnetic shielding.

Cons: not discovered.

Price: 35 990 p.

Prices :

High-quality acoustics for the house with an active subwoofer.

There is an ability to adjust the level, the bins gain phases, which allows strengthening the bass to 3 dB.

Characteristics:

as part of two 2-strip rear and frontal columns, center and subwoofer with a capacity of 200 W;
shelf type of columns;
frequencies from 35 to 20,000 Hz;
sensitivity 86 dB;
finish black gloss.

high-quality surround sound;
easy connection thanks to color labeling cables;
convenient brackets for wall mount included;
economical power consumption;
central channel with a double driver for a clearer vote display;
magnetic shielding.

Cons: not discovered.

Price: 14800 p.

Prices :

These are passive acoustics with compact columns and subwoofer. Bose columns are the most expensive in this price category.

Even at high volume, low frequencies are reproduced by a subwoofer without auditions.

Characteristics:

4 single-band compact columns weighing a little more kilogram;
finishing with black or white glossy plastic;
shelf acoustics with the possibility of mounting on the wall.

magnetic protection;
powerful drivers providing surround sound;
the ability to mount on the wall or special racks;
compactness.

to achieve full high-quality sound require the correct installation indoors and a good amplifier.

Price: 39990 r.

Prices :

Higher class acoustics

In the final section of the rating of the best home acoustic systems according to the version of the portal, Mark.Guru shows the model worth more than 40 thousand rubles. If you are not very limited in the means and want to purchase Hi-End Class Equipment, look at the following models.

This active shelf sound panel can be used to create systems 3.1 and 5.1 in combination with satellites and the subwoofer of the same brand. And you can simply use as an independent Soundbar for the TV. Acoustics is focused on watching movies, it is not very suitable for listening to music.

Wi-Fi support and 2 Ethernet port allow you to manage the system using mobile application, combine the equipment into the group, configure both the system as a whole and additional columns.

Characteristics:

shelf or wall placement;
digital optical entrance;
separate amplification on each of the speakers;
internet radio support;
automatic sound equalization.

easy connection and configuration;
you can combine with Sonos Sonos Speakers via Wireless Connection;
perfect for games and watching movies.

there is not enough low frequencies, it is better to purchase at least a subwoofer for full sound.

Price: 71000 rubles.

Prices :

2. Kef E305

System 5.1 with an original design and unusual form of speakers.

The use of original technologies, for example, an aluminum diffuser and a high-level magnetic system, reducing distortion, ventilation holes in high-frequency dynamics, and a new version of the emitter allows you to achieve the most natural sound and the effect of presence.

Characteristics:

passive system with an active subwoofer;
frequency range 33-45000 Hz;
shelf mounting with the possibility of installing on special racks;
sensitivity 86 dB;
built-in Class-D subwoofer 250 W amplifier.

high-tech system with realistic sound;
compactness I. original design.

Cons: not discovered.

Price: 88200 p.

Prices for KEF E305:

Another acoustics from Bose for home cinema with powerful compact columns.

The most powerful acoustic system from BOSE with new loudspeakers creates a bulk rich sound, suitable for spacious rooms.

Characteristics:

passive system 5.1 with an active subwoofer;
power of front and rear columns 50 W;
powerful subwoofer in 200 W with two low-frequency drivers;
single-band speakers;
shelf mounting with the possibility of installation on special racks.

high power with compact sizes;
the ability to adjust the level of low frequencies;
the possibility of attachment is close to the wall.

lack of fasteners included;
it is inconvenient to install, many wires.

Price: 89990 p.

Prices :

4. Jamo S 628 HCS

Premium acoustic system 5.0 from the Danish brand.

The model provides a BI-Wiring connection at which high and low frequency emitters separately connected. This allows you to achieve greater detail in sound.

Characteristics:

passive system;
mDF case material, different colors are possible;
outdoor 3-strip frontal columns;
shelf 2-strip rear speakers;
sensitivity 87 dB;
the power of the front columns is 150 W;
the power of the rear and central column is 80 W;
frequency range 37-20 thousand Hz.

high-quality sound;
ability to use in spacious rooms up to 50 sq.m.

the absence in a set of mounts on the wall;
for better low frequency sound, it is desirable to additionally purchase a subwoofer.

Price: 64990 p.

Prices for Jamo S 628 HCS:

The choice of the best home speaker system is not easy due to the wide range of prices and the mass of proposals from different brands. I do not want to unreasonably overpay and, at the same time, you need to purchase the option that will create a realistic and saturated sound of a home theater. Guide the ranking according to the portal Mark.Guru, which presents the best acoustics from each price category.

The choice of acoustics is not easy task. It would seem that the market dozens of good models, each has its own characteristics and the price. Summary - identical technique, but with different power and cost, to pay attention to? Does the sound of the sound and the number of columns affect the sound quality?

General column selection criteria

Acoustics

To begin with, we will try to figure out what the characteristics of "2.0", "5.1" and them are similar, which are found in audio descriptions.

1.0 – portable speakers. The sound quality is not very good, but they are comfortable for trips, as they have small sizes. Read more about how to choose portable columns -.

2.0 – Two frontal columns. Effects go in stereo mode, perfectly voiced favorite melodies, the sound is clearly transmitted when moving films.

2.1 – two front speakers and subwoofer. The bass is transmitted to the subwoofer, and other frequencies are on the speakers. If the first device is placed on the floor, and the satellites - on the table, watching movies will give a maximum of pleasure, everything is perfectly transmitted sound effects. Lovers of high-quality sounding of music such a system will not suit, because the subwoofer resets low frequencies, the sound is a little distorted.

4.0 – two rear and two front speakers. Clean stereo sounds are ensured, designed for kinomans, but also for enjoying the music quite suitable.

4.1 – two rear and two front speakers are complemented by another column with a subwoofer.

5.1 – two front speakers, two - rear, central and subwoofer. Maximum sound effect is guaranteed. Designed for lovers of high-quality films and games with special effects.

Power

Here you need to rely not on your addiction, but on the scale of the room. For the middle apartment, 25-40 watts per canal. If the room is a large or own home, permissible 50-70 watts. Those who acquire audio equipment under the parties will suit 60-150 watts - for a large room, and from 120 watts - street format.

Under the discos created models music centersin which the emphasis is made precisely on productivity and low frequency. The best representative of this class is called Sony Shake-66D or LG CM9540. If you buy such equipment for the room, the sound will not reflect due quality and bass, it is designed for another space.

Frequency range

Clear and clean sound is guaranteed when the frequency of the bands is approaching the frequency range captured by hearing: from 20 to 20 thousand hertz. High quality equipment gives out sound and with higher indicators. The smaller the frequency, the stronger the bass are felt, and shooting in games and films is transmitted much brighter. So the bass lovers should pay attention to the columns that reproduce the frequency of 10 hertz, and Melomanans will most like the figure to 40 thousand hertz.

Material

This is not only design, sound depends on materials. For example, a wooden body gives sound better than plastic. Even with high volume, rattling and extraneous noises should appear. If the model has legs, check whether they are well attached to the housing, whether the length is equal. If the column stands unevenly, then "swimming" and sound.

Models from MDF are most qualitative, from chipboard - more fragile, poorly carry humidity. Plastic wear rapidly. Aluminum protect the housing well, but distort the sound.

The TV speakers have their own characteristics of the sound, they also need to consider when buying.

Sensitivity. Responsible for the volume of sound than it is higher, the louder sound. If the indicators are high, then the amplifier does not need, the data on this indicator are noted in the technique. Acoustics with low sensitivity pulls up to 88 decibels, with high - from 94 to 102 decibels.
Power. Here it is important for the rule: the power of the amplifier should not be higher than the power of the speakers, otherwise the technique is simply braid. For a small room - up to 17 square meters, grade 80 watts.
Housing. The best is considered equipped with a phase inverter, it will be easier to be a closed type. If low frequencies are needed, choose outdoor acoustics, and for high - installed on the shelves.
Soundbar. It is called the "chopstick", which will improve any audio system. For the TV it is worth choosing an acoustic stand when the technique is put on the column.

The sizes of the column must be approaching the stand under the TV!

Of this series, LG, Maxell, Panasonic and Denon models have proven well. Excellent sound, when watching movies, a feeling is created, supposedly sound comes straight from the center. But there is a negative point. Soundbar stand does not cover an extensive range, low bass can be felt. Qualitative models give a great level, but it is small for the design under TVs.

If you are sure that without saunbar, it is not necessary to take into account such moments:

If the device stands far from the TV, it is recommended to equip the Bluetooth receiver hardware. APTX audio codec provide good sound, but it is important to take into account that the TV wireless speakers is distinguished by the instability of the signal.
For a room in 20 squares, you can choose a power of 50 watts. If the TV will stand in the hall, which has about 30 squares, it is better to choose 100 watt power potential. Next - by increasing. The main thing is to learn when buying whether there is a TV in its parameters, passing the sound through the stand or the Soundbar set.

At home theatras columns are divided into:

central, provide quality and sound effects;
front, reproduce music and audio effects;
rear, support acoustics in general.

If there is no subwoofer, the sound of bass is deteriorating, and the playback load is scattered onto the front speakers.

There are models of wired and wireless connection:

passive, receive a signal from the central block;
active, operate through 220 volts.

Assembly options

For assembling home theater, two schemes are developed: box and individual. The second requires the involvement of specialists and solid financial injections, as the details are selected at the request of the customer and are customized to the model. It is more convenient and easier, the so-called, box, when the instrument is assembled in the form in which it was purchased. It is worth noticeing to the model with a wireless rear acoustics, such a thing is a bit more expensive. In the set attached additional block - Wireless rear speaker amplifier, it catches a signal from the central block. Power - from 220 volts, you will also need the wires to the rear speakers.

Power

What power will be optimal for home theater? The easiest calculation: 8-10 watts per square. If the room has up to 20 square meters, boldly buy the system to 200 watts. For such techniques, models of 2 classes are developed:

Hi-Fi. Reproduces the sound is not bad, the cost is moderate.
Hi-End. The quality of the sound is better better, but the price is higher.

For home theaters with a large diagonal, you can use systems, the total power of which reaches 500 watts.

The supasport usually indicates the largest peak power, and each manufacturer it is measured differently.

Columns for music

Experienced buyers will certainly study the vehocport and characteristics specified in it. When buying household equipment, it is important to consider:

Sensitivity loudspeaker. It is a characteristic of the degree of voice pressure. For example, if you connect columns of different sensitivity to one amplifier, the sound to reproduce the sound in which this indicator is higher. Better to navigate from 90 decibels.
Frequency range. We capture the sound from 16 hertz to 20 kilohertz, because the optimal range is 18-20 kilohertz.
Impedance. Standard - 4.6 or 8 ohms. If an amplifier is planned, you can choose a model with any indicators.
The largest continuous electrical power. The technical support is usually indicated the greatest or short-term, and it is important for you to know which columns can issue as long as possible, without prejudice to the technique. It is better to buy a system, the power of which is 30% higher than the power of the amplifier. For a home enough 30-100 watts.

Top 10 best speakers

We present to your attention 10 the best speakers, sorted by their recommended destination.

Outdoor acoustic system

There are low-frequency and mid-frequency speakers, amplifier. Thanks to the separation filter, the signal is almost not curved. The speakers are very sensitive, the system protect the fuses. Channels 2.0, frequency of 38-20 thousand Hz, sensitivity 92 decibel.

large-scale sound;
good volume;
original design;
high security.

For home theaters

Powerful speaker system 5.1 channel. The power of 250 W, has a spacious multichannel sound. Luxury assembly.

clear and soft sound;
3D Blu-ray receiver;
reliable housing absorbing vibrations;
magnetic shielding technology;
extensive frequency interval.

Cons: Price from 100 thousand rubles.

Home Cinema Cinema. Channels - 2.1, power - 275 watts.

can be installed on the shelf or hang on the wall;
deep bass.

Cons: High cost, both models and brackets.

A budget option Acoustics for home theater. Channels - 5.1, power in sum - 1000 W, columns are made of plastic.

many decoders;
wireless subwoofer;
bluetooth module.

For large rooms

Three-band outdoor model. Wooden case, passive amplifier, power - up to 250 watts. Sensitivity 92 dB.

surround sound;
separate connection of LF and HF (BI-Wiring);
mono polar acoustic radiation.

Cons: not suitable for small spaces.

For television

Wireless subwoofer, HDMI, Anynet +, USB. Power - 310 watts. Sound panel It is divided into two columns, the volume is well adjusted, it is easy to configure. System 2.1.

small dimensions;
many outputs;
reliable housing;

settings are knocked down after switching on or off;
subwoofer requires layouts with sound sources.

Universal

System type - passive, power - up to 150 watts, amplifier, phase inverter, magnetic shielding. Sensitivity 98 dB, frequency 35-40 thousand .

high power;
there is a loudspeaker;

Cons: Phase inverters are located at the back.

Best Wireless Acoustic System

High-frequency speakers, supports Bluetooth. Line-in line input, and separate - for headphones. Channel 2.0. Power 30 W.

powerful sound bass;
conveniently adjusted volume;

Cons: no jack5 cord for PCs.

High design

Takes originality: the case of dark wood, black protective dynamics grilles. 6 loudspeakers, 2 high monitor, dynamics of different frequencies. Subwoofer breaks the sound with the emitter. Sensitivity 91 dB.

high performance;
deep bass;

Cons: Tangible price.

When buying speakers, experts advise to look at such important details:

The sensitivity of the system should be no less than 75 decibels.
In active devices, enhanced speakers are provided, partitive filters are located at the output of amplifiers.
Type of connection. The most convenient is the Mini Jack cable.
To save space, it is better to choose a wall-mounted model.
Before buying, it is necessary to listen to the sound, insistent that the amplifier has only the timbre stabilizer. Sometimes sellers using a multi-band equalizer tune the frequency range.
The sound source connected to the amplifier must only be CD or DVD player with a disc Audio-CD. Mp3 knocks the sound even expensive models.

What columns to choose is to solve you. But before you pay for them, spend a few minutes to listen to the sound at different levels of volume. This will help to avoid unpleasant surprises when connecting the equipment at home. Do not forget about the guarantee coupon and the technoperation to defend your rights if you forget to take into account.

In contact with

Dedicated to the acoustics of the premises, we found out that any room is a kind of resonator, dramatically affecting the nature of the system sound. Now it's time to talk directly about the sources of this very sound, that is, about acoustic systems.

To understand the processes occurring in the box, on the wall of which one or more speakers mounted, you need to thoughtfully read a couple of books, in each of which formulas more than in the whole school course of physics. I will not be closed in such a fucking, so it's not worth this material As an exhaustive analysis or guide to the construction of audible columns. However, I really hope that he will help novice music lovers (and some chronic, too), how to navigate in the diversity of acoustic solutions, each of which its developers, of course, is called the only right.

For some time after the invention, in 1924, an electrodynamic emitter with a conical diffuser (okay, simply speaker), its wooden frame was performed primarily decorative and protective functions. It is also clear - after a long age of listening to the plates through mica membranes and gramophones, the sound of a new device and without any acoustic refinement seemed simply apotheosis of prowness.

Gramophone membranes were most often made of aluminum or mica

However, the recording technologies were quickly improved and it became clear that it was more or less plausible to reproduce the audible speaker, simply fixed on a certain stand, extremely problematic. The fact is that the dynamic head itself is in a state of acoustic short circuit. That is, waves from the frontal and rear surfaces of the diffuser, emitted, understandable, in antiphase, unhindered overlap on each other, which is most closely reflected in the performance of work, and first of all on the transmission of bass.

By the way, in the process of this story, I will most often argue about low frequenciesSince their playback is a key point in the work of any hull AU. HF drivers due to the small length of the radiated waves in the interaction with the internal column do not need at all, and most often completely from it are isolated.

Soul Naraspyu

The easiest way to separate the frontal radiation of the speaker from the rear is to mount it on the shield as much size as possible. From this simple idea and were born, in fact, the first acoustic systems, which presented a box with an open back wall, as for the compactness of the edge of the shield they simply took, and bent at right angles. However, in terms of reproducing bass, the successes of such structures are not impressed too. In addition to the imperfection of the corps, the problem was also in very small on the modern concepts of the suspension of diffusers. To somehow get out of the position, the speakers were used as larger as possible, capable of developing acceptable sound pressure with a small amplitude of oscillations.

PureAudioproject TRIO 15TB with 15-inch TW drivers on three-layer bamboo panels

Despite the seeming primitiveness of such structures, they had some advantages, and so specific and interesting that the adepts of open speakers were not translated so far.

Start with the fact that the absence of any obstacles to the way of sound waves is the best way to increase sensitivity. This moment is especially valuable for audiophile lamp amplifiers, especially disputed or deprived. feedback. Paper diffusers of large diameter Even at the power of the order of four or five watts are capable of creating quite an impressive, and at the same time surprisingly open and free sound.

With a height of 1.2 m in the world of open acoustics JAMO R907 are considered almost compacts

As for the rear radiation, so as not to make distortion into direct sound, it should come to a listener with a noticeable delay (over 12-15 ms) - in this case, its effect is felt as a light reverb, only adding air and expanding music . The subtlety is that to create this very "noticeable delay" of the column, of course, should be located on a pretty distance from the walls. In addition, a large area of \u200b\u200bthe front panel and the impressive sizes of the LF drivers are appropriately affected by the general dimensions of the AU. In a word, owners of small and even average residential rooms, please do not worry.

By the way, the special case of open systems is acoustics, built on electrostatic emitters. Only due to the almost weighty diaphragm of a large area, to all the above-described advantages, the electrostat attacks the ability to filigimately transmit even the most sharp dynamic contrasts, and due to the absence of a signal separation in the sch and RF zones, also enviable timbral accuracy.

Open decoration

Pros: High-class open columns are a great way to get a real buzz from listening to pouring lamps of uniforms.

Minuses: About fat compression bass is better forget immediately. The entire sound path must be subordinated to the idea of \u200b\u200bopen acoustics, and the speakers themselves will have to choose from an extremely limited number of proposals.

Locked in the drawer

With increasing power and improve the parameters of amplifiers, ultra-high sensitivity of acoustics ceased to be the main stumbling block, but the problems of non-uniformity frequency response, and especially the correct reproduction of bass, became even more relevant.

The gigantic step to progress in this direction was made in 1954 an American engineer Edgar Vilchur. He patented the acoustic system of a closed type, and it was not a trick in the style of current patent trolls.

Patent Application Edgar Vilchura on the AU in closed

By that time, the phase inventer was already invented, and it was clear, to the box with the bottom of the speaker, too, were simply repeatedly, only nothing good did not work out. Due to the elasticity of the closed volume of air, it was necessary or to lose a significant part of the diffuser energy, or to make the body is exorbitantly large to reduce the pressure gradient. Willchur decided to draw evil for good. It strongly lowered the elasticity of the suspension, thus shifting the control over the movement of the diffuser to the amount of air - the spring is much more linear and stable than the corrugation or rubber ring.

In the closed drawer, the diffuser movement is controlled by air - in contrast to paper or rubber, it does not age and does not wear out

So it was possible not only to completely get rid of acoustic short circuit and raise the return at low frequencies, but also to adversely smooth the frequency response throughout its entire. However, a minor moment was found. It turned out that damping the closed amount of air leads to an increase in the resonant frequency of the mobile system and the sharp deterioration of the frequency reproduction below this threshold. To combat such a nuisance, it was necessary to increase the mass of the diffuser, which logically led to a decrease in sensitivity. Plus, the absorption inside the "black box" almost half of the acoustic energy could not make a contribution to the reduction of sound pressure. In short, the new type of columns required amplifiers of quite serious power. Fortunately, at that time they already existed.

Subwoofer SVS SB13-ULTRA with closed acoustic design

Today, closed design is used for the most part in the subwoofers, especially in those that claim serious musical execution. The fact is that for home theaters of the energetic working out of the lowest bass often turns out to be more important than dynamic and phase accuracy throughout the LF range. But by combining a relatively compact closed Sab with decent satellites, you can achieve much more correct sound - let and not filled with ultrahooth bass, but the extremely fast, collected and clear. All of the above can be attributed to the full-range columns, the "closed" models of which occasionally appear on the market.

Closed box

Pros: Exemplary speed of attack and resolution in the low-frequency range. Relative design compactness.

Minuses: A sufficiently powerful amplifier is required. Superframe bass on the verge of infrasound to achieve very difficult.

Business - Pipe

Another way to curb the antiphase rear radiation was the phase inverter, in Russian, literally "phase unfolder". Most often, it is a hollow tube mounted on the front or rear surface of the case. The principle of operation is understandable from the name and uncompose: times to get rid of the radiation of the reverse side of the diffuser is difficult and irrational, it means you need to synchronize it in phase with front waves and use for the benefit of listeners.

The amplitude and phase of air movement in the phaseinverter varies depending on the frequency of diffuser oscillations

In fact, the air pipe is an independent oscillatory system that receives the impulse from the movement of the air inside the case. Possessing a completely defined frequency of the resonance, the phase inverter works the more efficiently the closer the vibration of the diffuser to the frequency of its setting. Sound waves of higher frequencies move the air in the pipe simply do not have time, and lower although they have time, but what they are lower, the stronger the phase of the phase inverter, and, accordingly, its effectiveness is shifted. When the phase rotation reaches 180 degrees, the tunnel begins to frankly and very effectively swing the sound of the bass driver. This explains the very cool drop of sound pressure of the AU below the frequency of the phase inverter - 24 dB / Oct.

In the fight against turbulent ghosts, phase inverter designers are constantly experimenting

At the closed box, by the way, at frequencies below the resonant response Ahh, much more smooth - 12 dB / Oct. However, unlike a deaf box, a box with a pipe in the side wall does not cause designers to go to any tricks for the maximum reduction of the resonant frequency of the dynamics itself, which is quite troublesome and expensive. The tunnel of the phase inverter is adjusted much easier - it is enough to choose its internal volume. This is true, in theory. In practice, as always, unexpected difficulties begin, for example, at large levels of volume, the air at the outlet of the opening can be noise almost like the wind in the furnace chimney. In addition, the inertness of the system often becomes the reason for the fall in the speed of attack and the deterioration of articulation on bass. In a word, space for experiments and optimization in front of the designers of phase inverter systems is simply incredible.

Phaseinverter

Pros: Energetic return on the LF, the ability to reproduce the deepest bass, relative simplicity and low cost of manufacture (with a fair complexity of the calculation).

Minuses: Most implementations loses the closed box at the speed of attack and the clarity of articulation.

We will bypass without a coil

Attempts to get rid of the genetic problems of the phase inverter, and at the same time to save on the volume of the corps without prejudice to the depth of bass, the developers acted on the idea to replace the hollow tube on the membrane, which moves into the oscillations of the same working volume of air. Simply put, another low-frequency driver installed in the closed box, only without a magnet and sound coil.

Passive emitter can increase the efficient surface of the diffuser twice, or even three, if in one column they are set by a pair

The design was called "Passive Emitter" (Passive Radiator), which is completely not too competent with English as a "passive radiator". Unlike the pipe of the subwoofer, the passive diffuser takes a much smaller space in the case, it is not as critical to the location, and besides, it, like the air inside the closed box, damping the lead driver, smoothing it with HCh.

Passive reel s / 5 subwoofer. The main driver is directed to the floor

Another plus - with an increase in the area of \u200b\u200bthe radiating surface to achieve the desired sound pressure, a smaller amplitude of oscillations is required, which means that the consequences of nonlinear suspension operation are reduced. Both diffuser fluctuate the simphausen, and the resonant frequency of the free membrane is tuned by the exact adjustment of the mass - the weight is simply lined up to it.

Passive emitter

Pros: Case compactness with impressive bass depth. Lack of phase inverter ghosts.

Minuses: An increase in the mass of radiating elements leads to an increase in transitional distortion and slowing down the pulse response.

Exit from labyrinth

Acoustics armed with phase inverters and passive emitters reproduces deep bass due to resonators working with air mediation inside the speakers. However, who said that the volume of the column cannot play the role of a low-frequency emitter in itself? Of course, it can, and the corresponding design is called an acoustic labyrinth. In fact, it is a waveguide, half or a quarter of the wavelength, which is planned to achieve a resonance of the system. In other words, the design is configured at the bottom boundary frequency range AU. Of course, using a waveguide full wavelength would be even more efficient, but then for frequency, let's say, 30 Hz, it would have to do 11-meter.

Acoustic labyrinth is a favorite design of self-delicacious acoustics. But if the body is desired, the crucible form can be ordered and in the finished form

In order to fit into the column of reasonable dimensions even twice the more compact design, partitions are installed in the housing forming the maximum compact curved waveguide, cross section of approximately equal to the area of \u200b\u200bthe diffuser.

From the phase inverter, the labyrinth is primarily less "resonant" (that is, not accentuated at a certain frequency) sound. The relatively low speed and laminarness of the air movement in a wide waveguide prevents the emergence of turbulence generating, as we remember, unwanted pride. In addition, in this case, the driver is free from compression that increases the resonant frequency, because his rear radiation does not meet almost no obstacles.

Scheme for calculating the case on dbdynamixaudio.com

There is an opinion that acoustic maze creates less problems with standing waves in the room. However, with the slightest miscalculations in the development or manufacture, standing waves may arise in the waveguide itself, which, unlike the phase inverter, has a much more complex structure of resonances.

In general, it must be said that the competent calculation and accurate adjustment of the acoustic labyrinth - the processes are very difficult and labor-intensive. It is for this reason that this type of building occurs infrequently, and only in the speakers of a very serious price level.

Acoustic labyrinth

Pros: Not only good return, but also high tonal accuracy of bass.

Minuses: Silent dimensions, very high difficulty (read - cost) creating a proper working structure.

Hey, on the ferry!

Ruor - the most ancient and, perhaps, the most provocative type of acoustic design. It looks cool, if not to say outward, it sounds bright, and at times ... In the old films, the heroes sometimes shout to each other something in the mouthpiece, and the characteristic color of such sound has long become a meme and in the musical, and in the cinema world.

Avantgarde Acoustics TRIO with low-frequency ripped massif Basshorn XD height 2.25 m

Of course, the current acoustics left the tin funnel with the handle, but the principle of work is all the same - the roofing increases the resistance of the air to better coordination with the relatively high mechanical resistance of the movable dynamics system. Thus, its efficiency increases, and at the same time a clear orientation of radiation is formed. In contrast to all previously described designs, the rurs are most often used in high-frequency links of the AU. The reason is simple - its cross section increases according to the exponent, and the lower the reproducible frequency, the greater the size of the outlet - already on 60 Hz, the fool is required with a diameter of 1.8 m. It is clear that such monstrous designs are more suitable for stadium concerts, where they are really Periodically you can meet.

The main trump card of the horn playback is that acoustic amplification allows for a given sound return to reduce the course of the membrane, and therefore raise sensitivity and improve musical permission. Yes, yes, again Kivok owners of lamp disputing. In addition, with the competent calculation, the rasystems can play the role of acoustic filters, steeply cutting off the sound outside of its band and allowing you to restrict ourselves to the most simple, and therefore bringing the minimum distortion by electrical crossovers, and sometimes it is generally without them.

RealHorns systems - special acoustics for special occasions

Skeptics do not get tired of reminding the characteristic circular color, especially noticeable on vocals, and gives it a characteristic benchmark. It's not easy to overcome this trouble, although judging by the best examples of High-End-Rupors play, quite real.

Rouger

Pros: High acoustic efficiency, and therefore excellent sensitivity and not bad musical resolution of the system.

Minuses: Characteristic hardest sound coloring, non-sizes of the middle and the less low-frequency structures.

Circles on the water

It is exactly such an analogy that it is easiest to describe the nature of the radiation of contraceptive acoustic systems, first developed in the Soviet Union in the 1980s of the last century. The principle of operation is nontrivial: a pair of identical speakers is mounted so that their diffusers are located opposite each other in the horizontal plane and move symmetrically, then squeezing, then sprinkling the air layer. As a result, annular air waves are created, uniformly divergers in all directions. Moreover, the characteristics of these waves in the process of their distribution are distorted minimally, and their energy will slowly - in proportion to the distance, and not its square, as in the case of normal speakers.

Duevel Sirius combines elements of horn and contraceptive designs

In addition to the range and circular orientation, the contraceptive systems are interesting surprisingly by a wide vertical dispersion (about 30 degrees against standard 4-8 gr.), As well as the absence of the Doppler effect. For speakers, it is manifested in the signal beats caused by a constant change in the distance from the sound source to the listener due to the diffuser oscillations. True, the real audibility of distortion data still causes a lot of disputes.

The mutual penetration of concentric sound fields of the right and left columns create a very extensive and uniform zone of volumetric perception, that is, in fact, the question of precise positioning of the speakers relative to the listener becomes not relevant.

Italian-Russian contraceptum acoustics Bolzano Villetri

The characteristic feature of the contraperture is that the sound coming to the listener is actually from all sides, although it creates an impressive effect of presence, cannot fully transfer information about the sound scene. Hence the stories of listeners about the feeling of the piano room and other wonders of virtual spaces.

CONTRUCTURE

Pros: A wide zone of spectacular volumetric perception, naturalistic timbre due to the nontrivial use of wave acoustic effects.

Minuses: The acoustic space is noticeably different from the sound scene conceived when recording the phonogram.

Other...

If you think that on this list of options for designing the columns is exhausted, it means that you strongly underestimate the design enthusiasm of electrical acoustics. I described only the most running decisions, leaving a close relative of the maze - a transmission line, a bandage resonator, a hull with an acoustic resistance panel, load pipes ...

Nautilus from Bowers & Wilkins is one of the most unusual, expensive and authoritative in terms of sounding acoustic systems. Type of design - Load pipes

Such exotic is quite rare, but sometimes it materializes in the design with a truly unique sound. And sometimes not. The main thing is not to forget that masterpieces, like mediocrity, are found in all decorations, no matter what the ideologists of a brand say.

Prepared by materials of the magazine "Stereo & Video", June 2016www.stereo.ru.

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