How to use and adjust the subwoofer correctly

                          How to use and adjust the subwoofer correctly

How to correctly use and adjust the subwoofer for home theater speakers

The subwoofer plays an indispensable and important role in the high-definition home theater system. Without it, you will not be able to experience the extremely shocking low frequency and full-bodied scene that only professional theaters can have in the home theater. Feeling! There are many friends who know little about active subwoofers. Even if they buy subwoofers, they will not use and adjust the settings correctly, so they cannot achieve the sound effects that subwoofers should have. To this end, let us share how to use and adjust the subwoofer correctly.

Introduction to each terminal on the back of the subwoofer:

1. Volume adjustment knob (VOLUME): Rotate clockwise, the overall volume of the subwoofer will increase, otherwise the volume will decrease.

2. Equalization adjustment switch (EQ): When the EQ adjustment switch is in the NO position, a certain section of frequency can be artificially increased to enhance the loudness of this frequency. When the EQ of the subwoofer is turned on, the frequency of 50 Hz can be artificially increased Point about 6dB to especially strengthen the low frequency effect. Does not increase when EQ is off.

3. Phase adjustment knob (PHESE): The phase of the low-frequency signal output of the subwoofer must be consistent with the low-frequency output signal phase of the main speaker, so that they can be superimposed on each other to harmoniously enhance the overall low-frequency intensity and strength in the sound field. If the phases are inconsistent, the low-frequency signals will conflict with each other at a certain frequency and cause the low-frequency signal to deteriorate, which is not worth the loss. Therefore, this knob has an important impact on the purity and naturalness of the low frequency and needs to be carefully adjusted.

Introduction to the main points of subwoofer debugging:

To play a movie clip or song with strong low frequency and strong rhythm, follow the steps below:

1. Position adjustment:

Pay attention to the positioning of the guns. Due to the standing wave problem in the room, the positioning of the guns is very important. The easiest way is to put the cannon on the king position first, input the pink noise of the low frequency band, you squat down and move around the room to listen, you will find that there are several positions with very loud bass, and then choose a suitable position to put the cannon It can be anywhere. After the gun position is selected, you can sit back to the emperor's seat, ask someone to fine-tune the position and direction of the gun, and then repeatedly adjust the phase, balance, level and other settings on the gun board, and fix it after you are satisfied. If there is a sound pressure meter or a spectrum analyzer, it is better to measure and locate.

2. Volume adjustment: Adjust the volume so that the sound of the subwoofer and the sound of the main speaker are well integrated. Subwoofers are designed to compensate for the lack of bass in your existing home theater system, not to overwhelm their own performance. The sound from the subwoofer should blend in with the output of the entire system.

3. Phase adjustment:

Rotate the phase repeatedly from 0 to 180 degrees, and listen carefully at the normal listening position. Compared with the position of the knob at 0 or 180, the low frequency performance is stronger and stronger, and it is obviously enhanced. At this time, put the switch at a better position for low frequency. Can. But sometimes there is almost no difference in low-frequency hearing between the two states. This is mainly because the placement of the subwoofer has not been adjusted properly. Change the placement of the subwoofer in the room and then adjust it. Position; Of course, if you change the main speaker, change the position of the main speaker or subwoofer more, you need to re-adjust the phase, which is very important.

4. Frequency adjustment:

Rotate the frequency range adjustment knob repeatedly. When the bass of the whole system sounds smooth and integrated, the frequency of the subwoofer is adjusted.

After completing all the above steps, the effect of your entire home theater has been adjusted to the best.

How to use the speaker correctly

The speaker is an important part of the entire audio system, and its value is about half of the entire system, so it must be treated properly.

①Avoid placing it in a place exposed to direct sunlight, and do not place it near heat radiation appliances, such as stoves, heating pipes, etc., and do not place it in a humid place.

②Before the speaker is connected to the amplifier, the power supply of the amplifier should be cut off to avoid damage to the speaker.

③The feeder connection with the amplifier should be secure, it cannot be dropped when being pulled, and the positive and negative polarities cannot be connected incorrectly. The feeder wire connecting the loudspeaker should be thick enough and not too long, so as not to cause loss and deteriorate the damping. To deviate from the maximum frequency response ± 0.5dB (8 children stalks ┪? trace? Ping buck shackle Xiaman round o0.75mm2 wire maximum length 9cm, 1.5mm2 wire maximum length 14m, 2.0mm2 wire maximum length 21m.

④ Pay attention to whether the impedance of the speaker is suitable for the recommended value of the amplifier

⑤ Do not use beyond the rated power. Otherwise, the sound quality will deteriorate, or even damage the speaker.

⑥The shell should be wiped with a soft, dry cotton cloth, do not apply furniture wax or benzene, alcohol substances.

⑦The dust on the surface of the speaker can only be removed with a soft brush, not with a vacuum cleaner.

⑧The speaker should be placed on a solid and solid floor to avoid bass attenuation. Do not place the speakers too close to the wall.

⑨Do not place the speaker too close to the turntable, so as not to generate acoustic feedback and howling.

⑩If there is an adjustment of the middle and treble levels, it can be adjusted to make the sound playback satisfactory according to the listening requirements.