Mini Digital small speaker selection techniques and the use of skills

Optional skills
Listen to the speaker's first look for a pair of speakers of the initial concept to understand, available ", OK, knock, recognition of" steps to identify: that is, a view technology, like the weight, three knock box, four recognized nameplate.

A view technology is from speaker appearance first like to judge the merits of that and quality: from natural wood to create sound of course tutor the best, many luxury-class elite extreme speaker, including Italy's Chario (zhuoli), Guarneri Homage (Stradivarius Chao had owned), etc, but such a good case for environmental, resource-poor settings process difficult, a long time and other factors, will not be universal as ubiquitous "floating flexible" shampoo, certainly not low price. It is common for speaker was to MDF mdf surface dressing in a thin layer of veneer for decoration: compress your exterior veneers Seiko real speaker, especially as item, queyan, flowers of PEAR and walnut, hardwood, red oak, and other rare natural wood veneers, whose visual effect is very good, nice and creamy comfort. In particular, to symmetric Butterfly pattern really is sputtered via multi-layer veneers polished piano lacquer, most can be considered a high-quality speaker, phishing pinji. PVC (sand Billy) plastic folding boxes are staple, although workmanship, only the middle and the same. But to the grain veneer decorated box although looks very should pay more attention to the case behind the veneer seams and speaker setup bit dug ligation process are the precise place. Fake products generally do not pay attention to these details, and a little hard to correct judgement.
The second is sufficient weight: good speakers are mostly to 18-25 high quality MDF particle board building, gourmet flagship speaker in rosewood, yellow citron like overweight solid wood or multilayer plywood to build, so weight very alarming. Often a pair of speakers is up to 50 kg net weight. The lower the articles most texture soft Particleboard, phishing forgery with poor paper plates, the lesser weight. Audio sector often has a "look like amateur quality, weight", heavy sound than the light of the speaker. But watch out the bottom-performing businesses in the yinti sand cement weight increase irrigation in order to deceive consumers.

The third is knocking box: use knuckle percussion box, bottom, left, and right before and after the baffle box all sides issued Yuen and slightly crisp sound, feel thick sheet solidity, internal has multiple root reinforced support, box structure reasonable, strong, there are a variety of noise and anti-standing wave of measures, etc. This type of case processing costly, difficult, and few of fake products. As with the knuckle strikes the Cabinet issued a "poof, poof" empty response, description sheet is too thin, material quality is too low, the structure is not reasonable. And there is no sound-absorbing materials or reinforced foster, resulting in a box, there is a wide range of reflectance and standing wave formation. Purchase this speaker, impossible to get good results of the replay.

 Four admitted nameplate: really good speaker has a fast elaborate gilt or chrome-plated nameplate tag, nameplate on inscribed distinctive trademarks, company, name, place of production, appropriate indicators, etc. The import box is available in English as: Made in xxx or Manufacture and the appropriate indexes trademark, speakers, etc. If you have only Designin ... (XX design) or indefinite only marked one of the country, even apart from the simple and very loose some basic indicators no origin, see manufacturers, trade mark or mark is not registered. These three products most have phishing, fake. Famous speakers are brand image and brand, so that the data plate marking very specifications, exquisite, various indicators and business name, origin. Have a nameplate even thin metal plating 24K gold, the above fonts have a bump. Products not only have the date of manufacture, production, and even pair sequence number and an ID card with the box. For this type of speaker system, as long as the price is reasonable, in General, you can rest assured that selection

 From technical specifications to determine the merits of the speaker, the speaker mentioned above finished behind generally affixed with a piece of technology refers to the label: content tends to sound frequency range, sensitivity, hosting several power and impedance. Where sensitive rate is the most important indicator of the speakers, to a large extent, determine what kind of carton into a container should be matching amplifiers, how much power to push, and so on. Most Kam-listen to-level home hi-fi sensitivity in 86-92dB, on the same power amplifier, at equivalent volumes, such as volume to 10 o'clock), the higher the sensitivity means that the larger the sound on sound amplifier power may be obtained and requirements will be low. This is the push for better sound. Many commercial OK Hall with professional speaker sensitivity are more than 100dB, no wonder many people feel go OK Hall to sing karaoke, more beautiful and easier to get a large volume. But you don't think that sensitivity is better, in fact, the sensitivity over the Horn 92dB are vibrating Bowl lighter, thin metal pots, PP basin and the like, will lead to power manage speaker control force damage, resulting in a sound pretty thin, bias, partial exaggeration, partial Hale, few details of the many music and charm. Not suitable for HI-FI Kam-listen. While many voice thick and soft and is full of musical taste of the famous speakers typically sensitivity are relatively low, such as the United Kingdom, premium-ATC, Italian Stradivarius Chao had owned, zhuoli and other top-level speakers sensitivity only 82dB. Such speakers often very difficult, you need to output current great big Mac power amplifier before allowing it to work in an ideal linear region, price will not be small.

 Another most important indicator is the frequency range. For example, made a new Dirk compass, Bookshelf loudspeaker frequency range is 60Hz ~ 20KHz ± 2.5dB, 60Hz represents the speaker in the direction of the stretch value low frequency. This figure is lower, speaker of the better low-frequency response: 20KHz indicates that the speaker can achieve high frequency extension value. The higher the number, indicating that the audio characteristics, the better. While suffix of ± 2.5dB indicates that the period frequency range of distortion size smaller, distortion, frequency response curve is relatively flat. Some speakers noted that distortion is ± 3dB, its frequency range should be. Some speakers do not indicate that the indicators, frequency extension range is wide. For example the compass a box if you do not specify distortion control in positive and negative 2.5 DB range, the frequency range can be marked as 40Hz-23KHz. It is to be noted that the distortion is not marking the frequency range is meaningless. If only for its willful, conscience, intentionally deceiving Mont consumers, also, the speaker index non-canonical, manufacturers on their own lack of confidence in the product, hard to purchase.

Hosting power is the speaker of a reference index, use the number pad, which indexes and not indicate speaker quality is good or bad, just as the matching power amplifier provides reference basis: for example, a pair of speakers hosting power labeled as 10 ~ 200W, that is to say to the speaker of the amplifier is needed at least to have 10W power output of the above, but do not administer more than larger than 200W for full power output amplifier. Otherwise there might be a fire box. In General, home speakers would have it, the only good push, push a good push bad problem, 200-Watt following hosting power of use is resettle, never too high.

There is also a speaker impedance value index is usually 8 Ω as its nominal value, the vast majority of second-division the impedance of the Bookshelf box values are 8 Ω, unit number, featuring zuodishi speakers also have 6 4 Ω, Ω. The smaller the impedance values, you need to promote the greater is the current, the requirements of the amplifier power is appropriate. To my opinion, the best home speakers selected 8 Ω impedance of relatively good distribution amplifier.

 Woofer speaker identification

woofer loudspeakers have a direct determines the sound frequency response and bass. From the speaker cone design point of view, the current market mainly in the dialysis cone "," packing tape from the basin "," bullet-proof materials woven basin "," wool weaving pots "and" CD film "and other materials. "Ed cone" has the advantage that the cost is low, the drawback is that power is too large bass seem boring and durability for the poor; "packing tape basin" also has the advantage of low cost, durability, little better, and as such is not suitable for high-power use; both types of product placement in General amateurs can, but we were not professional enough. "Bullet-proof cloth woven basin" has the advantage that the bass is powerful, on the manifestation of the rock and roll, percussion music is quite prominent, suitable for high-power amplifier main speakers use is making complex at nature not cheap; "wool weaving basin" advantage of light music, soft music is ideal for locating in the bass range use, drawback is lack of strong bass performance, and also less; "CD film" is the market for a new product, as compared to the excellent bass speaker materials, it has proven, just because there has not been accepted by many manufacturers, so that the speakers do speakers.

 Housings on sound quality

The current speaker of the materials used are plastic boxes and wooden box. Material thickness and quality and speaker costs have a direct relationship, also affect the performance of the sound box. Speaker enclosures, the greater the density, the sound is produced by the vibration of the case, especially with high power amplifier of active speaker, and plate thickness, to some extent, the effectiveness is the realization of a subwoofer, ensure that the plastic speaker bass. Clearly, the low quality of the audio product is certainly the case. But the mid-range speaker certainly is made of wood? answer is no. This grade of speakers is made of wood, plastic imitation wood, just some imitation fully reached bristled pigs. In the top-of-the-line products must be made of wood, but with the density in the sheet, or multiple layers of sheet metal that would sound different. Even if the same selection of sheet metal, the same power output, different design structure, different box size, the sound quality may be quite different. However, some speakers though plastic body, also, for example, CREATIVE sound works speaker, not only the plastic casing, and volume do not, the first impression is nothing special, but after the audition, feel really, regardless of whether it is a tone or sound quality have been professional, bass can strongly impact forces, and of course the price is not cheap.

Selected speakers note following

First, we should pay attention to whether the speaker out of uniform, as multimedia music sound source mainly to games and General music-oriented, where the pitch of a proportion of larger, smaller bass scale.

Secondly, it is important to note that the orientation of the sound field. Speaker positioning capability have a direct relationship to the users play games, watch a DVD movie of acute effects.

Thirdly, it should be noted that speaker frequency dynamic zoom limit, that is, when the user moves the speaker volume up and exceed a certain limit, the speaker is to remain in the full range of uniform clear sound source signal amplification.

Fourth, pay special attention to the speaker box if there is a resonance. General case with thin or plastic shell of speakers in the 200Hz following low band big volume output, resonance phenomena occurs. A Cabinet resonance will seriously affect the output of the sound, so users in selecting a speaker should try to choose wooden shell.

Fifthly, it is important to note that the chassis has anti-magnetic. Because the display is sensitive to the magnetic field around, if the speaker of the magnetic field is the General Assembly so that the image on the screen, or even to cause the display of life decline in the selection of special attention at the time.

Sixth, it is important to note that speaker cabinet closed. Because sound better, better. Occlusive check is very simple, users can hand on speaker inverting hole, if you feel there is a clear air rushed out or inhaling phenomenon, then speaker airtightness.

Maintenance
The entire sound system sound box is a key part of the value of up to half of the total system shall be so treated properly.

① avoid direct exposure to sunlight is placed in the Sun, do not place close to the thermal radiation apparatus, such as furnaces, radiator, etc, are not placed in high humidity areas.

② speakers are connected to the amplifier before you cut off the amplifier power to avoid damage to the speakers.

③ and amplifier feeder connection should be secure, the pull is not falling and negative polarity cannot be wrong. Connect the speakers to the feeder, should not be overly long rough enough so as not to cause loss and make the damping. To deviate from the frequency response of maximum Shi 0.5dB (0.75mm2 9cm Traverse maximum length, maximum length of wire 1.5mm2 14m, 2.0mm2 21m Traverse maximum length.

④ should note that the speaker impedance is the recommended values for amplifier

⑤ shall not exceed the rated power. Otherwise, the sound quality will go bad, or even damage speakers.

⑥ shell should use a soft, dry cloth to clean, not painted furniture wax or benzene, material.

⑦ speakers surface dust can only be used to clear the soft brush, you cannot use the vacuum cleaner.

⑧ speakers to be placed on solid, sturdy floor to avoid bass attenuation. Speakers do not too close to the wall.

⑨ do not place too close to the speaker power discs, so as not to create the acoustic feedback caused by noise.

⑩ as with treble level adjustment, can be listened to at the top of your request.

Speaker system failure analysis

Speaker system is an important component of the sound device, typically one of the speakers, dividers, box, sound-absorbing materials, etc. Speaker system failure rate is low, the type of failure, malfunction has the following four categories.

First, the silent
1. the speaker wiring fault or divider exception. Speaker after speaker wiring fault, no excitation voltage, it will cause silent failure. Divider generally difficult to break, but likely lead joints of welding, featuring short circuit capacitance.

2. the voice coil. Available multimeter R× 1 measurement speakers lead wire solder, if resistance to 8, available knife voice coil wire ends of paint show bare copper wire and then, if you still get the voice coil internal breakage; if measurement have and "Titicaca" sound, the voice coil wire circuit breaker, will head a good solder, and then another one paragraph and the voice coil winding similar wire welding properly.

3. the speaker wire breakage. The speaker cone wire vibration frequent, sometimes easily broken wires has been broken, but cotton core wire stays connected. This wire is not easy to buy, slightly longer available soft wire instead.

4. the voice coil burnt down. Multimeter R× 1 measurement speakers lead, if resistance near 0 Ω, and there is no "Titicaca" sound, the voice coil burnt down. Replace the voice coil before you clear the magnetic gap within the debris, then carefully add the new voice coil into magnetic gap, strengthening the voice coil, edge audition with super glue fixed voice coil down and voice coil is placed in the best location with Super Glue the voice coil and the dome of the gaps filled up to half, the last good shields, the speaker cone-up, place the day after normal use.

Second, sound company pensions
1. the speaker wire. Voice coil wire is usually by fault or bad, cone vibration frequent, sometimes connected, sometimes to a breakpoint, formation of irregular time at no fault.

2. the voice coil wire breakage or is about to short circuit.
3. the power amplifier output jack is bad or neutral sound input.

Third, the volume is low
1. the speaker performance magnetic adverse, magnetic steel. Speakers of sensitivity depends primarily on the permanent magnets and magnetic, cone of quality and Assembly process. You can use the ferromagnetic objects touch magnetic steel, depending on the size of the attractiveness of the estimate and the strength of the magnetic properties of magnetic steel, if magnetic too weak, you can only replace the speakers.

2. import core column loose. When speakers of a core pillar loose, they are conducting plate absorption to one side so that the voice coil squeezed hamper normal voice. When available hand gently press the cone, if the press is not moving, it is possible that the voice coil is core column down required demolition and bonded to recovery.

3. the divider exception. When the prescaler in symbol of bad, the corresponding band of the signal is blocked, the band speakers volume is low. The focus should be checked and a fractional bass speakers parallel capacitance is shorted, and tweeters parallel fractional inductors are short circuit between the layers.

二、

Fourth, abnormal voice
1. the magnetic gap dirt. If dirt into the magnetic gap, voice coil vibration and debris when frictional, causing the hoarse.

2. the core voice coil clean. The location is not straight, voice coil and magnet core happens to wipe off, causing distortion correction when maintenance or replacement of the voice coil.

3. the paper Bowl rupture. The damaged area of the paper should be replaced, corrupted area available slightly thinner paper basin or other toughness better paper patch.

4. in the case of adverse. Box sealing adverse or decorative spider's installation does not hold, and so on, will cause the sound to play when rupture. In addition, the box too thin sheet metal causing resonance causes the sound exception.

Speakers of life and maintenance
A life on Earth, speakers, this is a lot of people are concerned, normal use it should be said that in 15 years on, the maintenance of good time or even longer, as you yourself sanxian brother waves 907Be, as long as the maintenance of good, you use the 20 years will never have a problem. In my home-made use of the speaker for over 15 years has n on and still in normal use. But why do some speakers used to damage a few years? this with the use and maintenance has a lot to do. I relevant issues involving speakers briefly:

Speakers have driver, dividers, box, inverse hole, terminals, wire, etc., from maintenance point of view, the first three items as the main, after three minor.

1, the driver. Driver's main constructs a choke ring, cone, core branch of the piece, the magnetic circuit, including magnets, T iron, voice coil), frame, and so on, and influence the speaker life apart from the normal use of the voice was not burned, mainly of choke ring and cone. Choke ring: the life of choke ring material order for edge, rubber and plastic composite edge, silicone rubber, foam side .... A delicate is the foam side (such as JBL has a LX series speakers), as a result of the foam side of the driver, in normal use 3-5 years fracture almost useless, I helped a friend built N only such speakers without exception are foam off ring is damaged. Of course the foam side of material composition and production process, its life. Second is the number of silicone rubber edge, original homemade "feile" bass like this to outline the shortcomings of the ring, it mainly if process improperly, a long time, easy to aging and inert deformation and moire patterns, which influence. Today's speakers factory or widely used choke ring and plastic of choke ring to it.

The loudspeaker of life greatly extend the choke ring, is the edge of choke ring, which are mostly used in professional speakers, but also useful in civilian products, such as Nanjing production of 12-inch bass speakers YD315-8b takes is cloth of choke ring.

2, cone. Cone in driver in use, have adopted a variety of materials: its bullet-proof cloth, woven basins, MICA polypropylene PP basins, pots, aluminium-magnesium alloy basin issues was not largely paper-based or paper-based compound Cone, due to the protein fibers exist, in the southern wet areas was almost inevitable that we mold erosion common bad points and white and headache. The cone of the sound of gentle, simple and award-winning speaker factory. As America's "JBL", "us" in Denmark, Norway and the "West" will produce a large number of paper-based or paper-based composite cone of the driver, then how to maintenance issues, in particular for the maintenance of high retaining Horn's award-winning fever frenzy.

3, stand: a wide range of color stand at present, there are two materials of that thin sheet metal stamping frame and aluminium frame, of course, there are other materials such as nylon and plastic frame (op 802 and Maung H545) are adopted this kind of stand. Imported and domestic high-end loudspeaker unit most is aluminum frame, its intensity is high and seismic performance than stamping steel frame. However small-bore unit was fine. There are centred support (yellow card) is a special process for production of hemp products, as long as you don't retting, Amy.

4. the magnets: magnet almost no maintenance, but when long there will be some loss of magnetic phenomena, but on the overall performance caused a drop in the sensitivity at is, just little, anti-magnetism speakers than normal not steering of the situation.

How to maintain speakers and speaker unit,
1, box it is best to choose your exterior wood manufacturing, with a high wear resistance, high intensity paint products better, but is more rare; most of the exterior finish with high-density mechanism plate or flake (wood and paper appearance if no paint, we recommend that you repaint n times). The location should be placed in a dry room, as much as possible to avoid direct rays of the Sun, don't put in high humidity areas, prevent high-density mechanism plate in the expansion, it is in trouble. And speaker do long-term shelved without at least a month with 1-3 times, and each with more than one hour, it will bring a lot of trouble, such as materials fatigue, divider in the promise of electrolytic capacitor leakage, mild effects work, to the effect of its life.

2, the driver's maintenance, (whether new or in the case of the driver. ）

(1) in the product box and remove the Mediant careful, careful, and boxes and Horn with oily pen to mark the location to maintain good after installation.

(2) preparing for a box of imported Fede (imported brands cars used) evenly along the top and bottom of the second layer of Alnico T iron, General this t rail steel galvanized products, if the frame is a frame has to be so treated to wax will report on it, don't put it off to prevent corrosion N years.

(3) the driver from tone volume to Terminal b root parabola-shaped woven wire, or shall be coloured wax, and finger back and forth to get even, and don't put it off to prevent a long time, the leader blackening become elastic reduces work.

(4) in the case of a paper-based or paper-based compound cone appear bad point Leukoplakia, medical alcohol sponge Bob, a quick wipe carefully from the back of the (much to twist the alcohol sponge Bob semi-dry, must not be too wet, or avoid infiltration to the cone's surface). If the surface is bad point white spot, only 40-45 ° warm water, plus some SOAP shampoo, with a clean soft towel moistened with water wrung wipes, brewing, do not wipe the repetitious. Must not use alcohol, such as with volatile organic solvents to clean it.

(5) top speakers in the pot after penetration (typically 1-3 months), and then used for a period of time, approximately six months to one year, then the speaker on the bass unit (treble do not move), rotate 180 degrees azimuth and then loaded back (maintenance is the first time, this time as long as you can install it upside down position, to let the trumpet in itself under the influence of gravity to a more balanced view them needs wax at places such as needed.

(6) divider maintenance. First look at divider, one of the only thread divider and leading to eschew the capacitance, is not a high-quality MKP frequency capacitors (General capacity and pressure 2.2-6.8uf/100-400v, depending on the frequency point of capacity is different), such as with the do not move, contrary to put on a high quality of the MKP, featuring capacitance. As France's "civil", German for "native" or the "MIT" in the United States and other brand, both to ensure the representation of tone and miniaturized and indestructible eschew.

Divider better with Fede in plate negative and then evenly coated with a layer of wax. Or if you have the best with quick-drying insulated varnish brushes it again, it is better, my self-made divider with brush and quick-drying insulating, second degree, prevents oxidation of copper-Park chlorite rust and blackening.

More than just a personal experience of maintenance, for the lack of hands-on experience, it is important to note, especially in the clearance of imports of finished loudspeaker, in addition to the removal of screws need special tools to the actual operation requiring a high level, it is best to have a two-person demolished as together. In short, speaker if used properly and proper maintenance, with 15 years or more.

Practical techniques
Replay the bass is a very tricky thing, it gives the speaker designer and audio difficulties. But this is a challenge, potential return sufficient proof, efforts to improve bass replay is worth it.

The crux of the problem is that the speaker is not in an isolated environment, but many speakers HI-FI sound designers and enthusiasts but tend to ignore this, designers are always with actual environment isolated anechoic chamber to develop their products. Facts have proved that the speakers sound and actual room there is a close interaction between the bass frequency bands, this relationship is particularly close. As we all know, the human ear to listen to the audio frequency range is approximately from 20Hz 20000Hz the most bass to the treble, which span up to approximately 10 octave, piano Central C code located from the bass side of fourth octave. Therefore, the bass area itself had been confined to the lowest octave (20Hz ~ 40Hz) and the second octave (40 ~ 80Hz), although a simple bass in real life, did not hear too much, but is it realistic to create music and it plays an important role.

If you do not use the subwoofer and the speakers entirely on ordinary to create bass, the speaker not only enormous and very heavy. Subwoofer with its compact, virtually no attention, tank equipped with their own amplifier and filter on the system with no additional requirements, and so forth many advantages. The system has a dedicated playback bass subwoofer, other channels you can use the smaller of the speaker, the entire system configuration and use are more flexible and more convenient. In General, creating the bass requires the use of a large speaker, but as long as a pair of mini speaker stood on the edge of the wall, is enough to make the sound gone in the bass range. It is part of the reason is placed in the wall help increase the 50Hz ~ 100Hz bass, partly room shape and size of the standing waves resonance "provides" room gain effect ". Most marketable subwoofer's problems is the low end roll frequency does not dive to 50Hz following, it cannot be used in conjunction with other channel's ordinary speaker ideal for matching, and their partial frequency response usually constitute harmful overlap.

● Standing wave effect of
Each room, regardless of whether it is a concert hall or average family's living room, there is a standing wave phenomena, it is caused by the bass replay a major source of the problem. The standing wave frequency and size of the room. In the interior space of the great Hall, standing wave frequency occurs in most low bass and infrasound district, lower than the minimum frequency bass and thus cannot replay on bass. But in average family's small sitting room, room dimensions and space are very small, the resulting standing wave frequency is high and the bass music, and the latter overlap, the variation in sound quality. The standing wave in the provision of "room gain", it also makes bass district of frequency response is flat, that is, it will raise some frequency response and offset the other some frequency response. In addition, different rooms have different standing wave patterns, but it and the room of wall materials, furniture and furnishings, listening location ADAPTiQ and speakers, and many other factors, the most difficult to accurately predict.

● In the interior construction-bass
As we all know, to make, it must be with the cone of vibration to move the air molecules in the air in frequency and the same cone vibration frequency sound waves. Due to the low frequency bass, bass speaker cone of vibration speed is very slow, so you want to produce strong bass indoors, you must make the Cone in units of time moving lots of air molecules. For that purpose, the subwoofer are usually large diaphragm, small stroke of cone or small diaphragm, big-stroke of the cone. The latter cone caliber small reduced the entire volume of a sub-woofer, and has the power and advantages of loudness, has become the modern subwoofer's mainstream.

However, the subwoofer housed in a huge speakers, although you can reproduce the movie in some amazing explosion and landslides cracked, and other special sound effects, but in listening to music, replay a large number of high-strength bass will be very unpleasant. In addition, the study and practice of results are proved, the subwoofer's loudness is greater than the other speakers in the system and there is not much actual significance. These are modern subwoofer's volume do smaller.

● Subwoofer Setup and connection
Indoor standing wave inherent and unpredictable people subject to tolerate them, nothing. Although some computer software provides some interesting ways to control the standing wave, but does not completely solve the problem of standing waves. Fortunately the bass of larger than normal wave in the long room dimensions, the bass is actually non-directional. Use this feature, users simply use separate subwoofer, you can get almost unlimited freedom to experiment sub-woofer in the Interior of the best positions. Although it's position as the primary speaker so important, but different set-up still has a different sound effects. The following describes three subwoofer set-up mode, each with its own advantages and disadvantages, readers may be based on the results of the experiment.

The subwoofer placed in the corner office. This helps to avoid the Interior of sound reflection, so the sound is more clear and distinct. But at the indoor mode increased motivation, makes the bass response is not enough. Because the entire system of ultra sub-woofer from listening location far away, heard the bass be larger than the primary sound experience a slight delay. Space, subwoofer should maintain at least with the wall and 10cm distance.

The subwoofer and the main speakers are placed on the same line. At this point the subwoofer and the Lord speaker and the listening position an equal distance from each other, resulting from the three speakers of direct sound both arrived listen to ears, do not occur in the time difference. This set-up is indoor reflections, the delay of reflections can slow playback audio clarity.

The subwoofer placed near the location of listening to the tempo (Figure 3). It is worth trying, to some, it is difficult to get the best acoustics in the room, because it will encourage indoor mode to minimize the smallest, also a dramatic reduction in direct sound mediation path and bass arrived listen to the ears of the time, but also make indoor reflections become more blurred.

Another less scientific position is that the first subwoofer in usual listening seats and let it play music, and then slowly move around them and listen carefully to the sound of music at the same time, until you find the best point in the bass sound. The point is placed subwoofer's best location, in the end it is placed in the Department.

Modern home theater AV in addition to connect the left and right main channel speaker of two groups of high level (speaker level) output terminal, also has a low level (line level) output terminal, active subwoofer with corresponding input terminal. In order for the system to play music and film programmes with the best acoustics, in addition to the subwoofer's two sets of speakers-level input terminals from AV corresponding output terminal, you should put the line level Terminal also corresponds to the connection, as shown in Figure 4. The benefits of such a connection is not present, the system will play 2-channel stereo music and 5.1 channel movie two different programmes, bass can effectively enhanced.
Shenzhen Singbox technology co., Ltd. (http://www.szcbl.com)
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