Car Audio has the characteristics of great impact by the environment, the installation process requires high, if the system has problems, may be some glitches after a period of time. Among them, several fault car speaker is most likely to occur: burning coil, magnetic sewn noise (often called rubbing circles), Penjia damage, cone damage. We know that good equipment to rely on reasonable, correct and debugging process, in order to become an excellent sound system. Here to talk about these three steps should pay attention to the problem, in order to eliminate the insecurity of the speaker, improve system reliability.
First speaker and amplifier impedance and power must match. Under mismatched conditions slightest mistake will cause damage to the speaker or amplifier. In general, if the speaker withstand power is greater than the power amplifier, the system not damaged, but the amplifier power is too small, not only will affect the push effect, but can also cause abnormal damage the speakers in the commissioning and use. So as to match the amplifier and speakers, high school low sensitivity of the speaker to try to close, which is both the sound quality or power distribution or debugging is very helpful.
Next, pay attention to the installation process some of the details:
1, remove the speaker of miscellaneous debris. Often drilling in the production process in housing, miscellaneous debris generated by polishing, especially metallic iron generated in the housing bore, wooden sawdust produced by cutting with miscellaneous debris easily enters the speaker volume airflow caused by a magnetic slit rub ring failure, resulting in noise. Mid-range speakers in the highest failure rate is the rub ring failure.
2, sound-absorbing material must be securely affixed to the inner wall of speakers, you can not have come off. Otherwise shedding sound-absorbing material easily adsorbed on the heat and the center hole of the disk, resulting in poor cooling coil burned.
3, the speaker mounting surface must be flat. Otherwise it would be mounted on the speaker cone frame deformation. If it is plastic or aluminum Penjia Penjia fracture occurs, whether it is broken or deformed Penjia will make the sound distorted or noise.
4, the speaker installation screwing efforts to smooth moderate. Do not use excessive force, otherwise it will get rid of once the screwdriver puncture speaker. Recommended to the mounting surface drilled positioning holes, then install the speaker, which can effectively prevent such losses.
5, seal coating to even moderate speaker of the border. The speaker frame and the box junction coated with sealant in favor of housing closed. Coated small sealing effect is not good, too easy to adhere to and surround cone, causing sound distortion.
6, protective cover installed to secure. Shield is the most direct protection of the speaker, the speaker without it susceptible to foreign object damage.
The third is the system debugging. Commissioning of the most prone to problems is the bass center frequency selection. The low frequency range is 20Hz-400Hz, for listening to music in general is concerned, let woofer working in the vicinity of 180Hz-220Hz, both the loudness and power efficiency shocking had good results. However, for such a strong preference for bass disco and other music fans, they tend to seek more powerful and deep bass, which requires a lower center frequency and Powerful subwoofer, if desired lower frequency, it is recommended multi-only speakers and string installation, this program regardless of the degree of distortion or safety are single speakers can not match. Specific installation program instructions on the sections of the subwoofer are described in detail.
In addition, both 6 db or 12 db bass Thunder blessing and power amplifier sections lift switch. note! When you use this switch, be sure to confirm the connected subwoofer’s power to bear if there is margin, or easily burn out the voice coil. In actual installation, we found a lot of amplifier power due to lack of trying to lift the switch by adjusting the bass to make up for output, resulting woofer voice coil burned. Occupy subwoofer fault for over 80% and improper commissioning is the main reason for burn burning coil tone.
The above are the car speakers to talk about common fault and reason, as long as the loading process pay attention to prevention, can effectively reduce the speaker failure, greatly improving the sound system reliability
Post time: Apr-04-2016