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Ten big problems easily neglected sound system
Source:JerryPower | Author:jerrypower | Published time: 2014-09-15 | 2513 Views | Share:
For music lovers, there is a set of sound system of their own, and the loudspeaker system -- speaker, quality to the replay sound and play a decisive role, so in the choice of speaker, will rack one's brains, but apart from the technical indicators are relatively sound box and sound evaluation, a sound box and some ordinary people ignore the problem, but not a small relationship and replay sound effect.
For music lovers, there is a set of sound system of their own, and the loudspeaker system -- speaker, quality to the replay sound and play a decisive role, so in the choice of speaker, will rack one's brains, but apart from the technical indicators are relatively sound box and sound evaluation, a sound box and some ordinary people ignore the problem, but not a small relationship and replay sound effect.
First, some new speakers need after a period of use, can play its excellent performance, this is called "pot". Otherwise, it will appear the reproduction of sound hard and too bright, or tight put not to open, this time process can be very different for different speakers giant, from dozens of hours to several days before.
Two, small Bookshelf Speakers due to physical limitations, bass its dynamic range can not be too large, so even if it is the extension of low frequency is very low, its practical significance is not large, the lower limit of low frequency shows that the pursuit of small speakers, the actual effect will not ideal, but not suitable for the replay explosive shed music.
Three common nominal impedance, sound box has 4 omega and 8 Omega two, 4 ohm impedance speakers, although it can make the output power amplifier more power, but due to the impedance is low, the output current capability of power amplifier with high requirements, which for some little power margin of power amplifier are often the cause of distortion increases, and low impedance loudspeakers on the damping bad, will affect the low-frequency control. In addition, some of the speaker impedance in the practical work, may in some frequency is reduced to half the value of the following, so it is best to chose the impedance of 8 ohms loudspeaker. (for example, a lot of load impedance AV amplifier cannot be less than 6 Ohm)
Four, small caliber loudspeaker unit speakers can get very good listening effect, but the speaker is only applicable to listen close to. For larger space of the room, for example, the hall burst, should choose the big sound box adopts large caliber loudspeaker unit, in order to achieve good listening effect.
Five, the dumbbell type sound box uses two identical low-frequency speaker unit, as the symmetry layout in the high-frequency unit on both sides, can obtain better low frequency and transient response, high sensitivity and high power capability, low distortion high nonlinear dynamic characteristics, but the rate of intermediate frequency integrated frequency it often produces low and narrow, vertical direction, so it should be paid attention to midrange performance. But here some dumbbell type sound box of a unit is only used as a playback frequency, with a unit of reproduction, low frequency, the so-called 2.5 frequency, the disadvantages can be overcome.
Six, two separate audio speakers, with two groups of loudspeaker wiring column, such as ordinary connection, two groups of binding posts in parallel, then the speaker cable must be connected to the low unit that a pair of posts, or due to the effect of the two groups of binding posts in parallel connection or copper, low weight seeding effect mostly suffer a loss.
Seven, the landing sound box is placed, but often due to ground resonance and the influence of the replay sound balance, even cause the bass hair bang, so in most cases, the foot nail is not less. The sound box seat frame is mostly need to match a pair of foot height is appropriate, free to put on desk, due to the reflection of sound waves, often make the speaker replay characteristic changes. The high frequency unit adopts the design of mirror symmetry speakers (i.e. high frequency unit is not on the baffle Center), positioning the high-frequency single element to bias inside.
Between the eight, speakers and tripod, best to use three small piece of foam double-sided adhesive to stick in the box at the bottom of the triangle position, and then put them on the tripod up, so that speakers of the tripod has a certain adhesion between. Otherwise, the use of inadvertently brought to the speaker, speaker can easily slip out of the ground and broke the tripod overturned.
Nine, a sound outlet hole is arranged in the sound box back boards bass reflex enclosure, it and the back wall distance shall be subject to adjustment, in order to obtain the low frequency performance of normal and reasonable. Too close, will generally produce low-frequency too much or vague voice, the distance is too far, may make poor low frequency. A sound outlet on the front baffle speakers, don't worry reflection hole problem, even if put be in the cabinet.
Ten, speakers are extremely vulnerable to the acoustic characteristics of the room placement and location. The speaker is placed in different space environment, it will have a different sound effect. Even if the same speaker, and after equalization playback system that has the same frequency response, as long as the size of the room is different, the burst effect will be different.