Second, the performance indicators of the speaker system
1) Frequency response (effective frequency range)
This indicator reflects the main frequency range in which the speaker works.
When a constant voltage source is applied to the speaker and the source frequency is changed from low frequency to high frequency, the sound pressure generated by the speaker will vary with frequency. The resulting sound pressure-frequency curve is the frequency response curve of the loudspeaker. The IEC (International Electrotechnical Commission) stipulates that the frequency limit of the sound that can be reproduced by the speaker, that is, the effective frequency range, is the frequency range in which the average sound pressure level of one octave near the peak is reduced by 10 dB in the sound pressure frequency characteristic curve of the speaker. The wider the range, the better the sound reproduction characteristics
Generally, the minimum required frequency response of the high-fidelity speaker box is 50-12500HZ (+4~-8dB), and it is enough to reach 50-16000Hz. Of course, 30-20000Hz is better.
2) Rated impedance
It refers to the impedance value measured at the input of the loudspeaker at a particular operating frequency (intermediate frequency). Usually indicated on the product nameplate, given by the manufacturer. The impedance characteristics of the speaker. The rated impedance given by the manufacturer is usually the impedance modulus at which the maximum work is expected in the rated frequency range. The rated impedance is generally specified as 4 ohms, 8 ohms, 16 ohms, 32 ohms, etc., and 3 ohms and 6 ohms are also used abroad.
3) Power
The power level of the speaker is one of the important indicators for choosing to use the speaker. It should be pointed out that the standard method of the domestic and foreign speakers is very different, because the definition of the power is different. The nominal power of a typical loudspeaker is rated power.
Rated power or rated noise power is the input power when the speaker can work continuously for a long time without generating abnormal noise. In general, the pink noise signal is used for testing, and the specific filter is used to test within the rated frequency range. According to the IEC standard, the loudspeaker to be tested should ensure that no abnormalities occur during 100 hours of continuous operation. Incidentally, the US EIA standard stipulates that the test time is 8 hours and the filters are different.
The maximum noise power is different from the rated power. It is the ability to indicate that the speaker is subjected to a large input power for a short period of time. The test time is only a few seconds or a few minutes. Generally, the maximum noise power is 2-4 times the rated power.
4) Sensitivity
The characteristic sensitivity is the sound pressure level measured at 1 m in the axial direction when the speaker is applied with a pink noise signal voltage equivalent to 1 W of the rated impedance. The sensitivity and efficiency of the speaker box are two different concepts. The efficiency is the ratio of the output sound power to the input power, but in general the speaker box with high sensitivity is also more efficient. Second, the performance indicators of the speaker system
1) Frequency response (effective frequency range)
This indicator reflects the main frequency range in which the speaker works.
When a constant voltage source is applied to the speaker and the source frequency is changed from low frequency to high frequency, the sound pressure generated by the speaker will vary with frequency. The resulting sound pressure-frequency curve is the frequency response curve of the loudspeaker. The IEC (International Electrotechnical Commission) stipulates that the frequency limit of the sound that can be reproduced by the speaker, that is, the effective frequency range, is the frequency range in which the average sound pressure level of one octave near the peak is reduced by 10 dB in the sound pressure frequency characteristic curve of the speaker. The wider the range, the better the sound reproduction characteristics
Generally, the minimum required frequency response of the high-fidelity speaker box is 50-12500HZ (+4~-8dB), and it is enough to reach 50-16000Hz. Of course, 30-20000Hz is better.
2) Rated impedance
It refers to the impedance value measured at the input of the loudspeaker at a particular operating frequency (intermediate frequency). Usually indicated on the product nameplate, given by the manufacturer. The impedance characteristics of the speaker. The rated impedance given by the manufacturer is usually the impedance modulus at which the maximum work is expected in the rated frequency range. The rated impedance is generally specified as 4 ohms, 8 ohms, 16 ohms, 32 ohms, etc., and 3 ohms and 6 ohms are also used abroad.
3) Power
The power level of the speaker is one of the important indicators for choosing to use the speaker. It should be pointed out that the standard method of the domestic and foreign speakers is very different, because the definition of the power is different. The nominal power of a typical loudspeaker is rated power.
Rated power or rated noise power is the input power when the speaker can work continuously for a long time without generating abnormal noise. In general, the pink noise signal is used for testing, and the specific filter is used to test within the rated frequency range. According to the IEC standard, the loudspeaker to be tested should ensure that no abnormalities occur during 100 hours of continuous operation. Incidentally, the US EIA standard stipulates that the test time is 8 hours and the filters are different.
The maximum noise power is different from the rated power. It is the ability to indicate that the speaker is subjected to a large input power for a short period of time. The test time is only a few seconds or a few minutes. Generally, the maximum noise power is 2-4 times the rated power.
4) Sensitivity
The characteristic sensitivity is the sound pressure level measured at 1 m in the axial direction when the speaker is applied with a pink noise signal voltage equivalent to 1 W of the rated impedance. The sensitivity and efficiency of the speaker box are two different concepts. The efficiency is the ratio of the output sound power to the input power, but in general the speaker box with high sensitivity is also more efficient. Second, the performance indicators of the speaker system
1) Frequency response (effective frequency range)
This indicator reflects the main frequency range in which the speaker works.
When a constant voltage source is applied to the speaker and the source frequency is changed from low frequency to high frequency, the sound pressure generated by the speaker will vary with frequency. The resulting sound pressure-frequency curve is the frequency response curve of the loudspeaker. The IEC (International Electrotechnical Commission) stipulates that the frequency limit of the sound that can be reproduced by the speaker, that is, the effective frequency range, is the frequency range in which the average sound pressure level of one octave near the peak is reduced by 10 dB in the sound pressure frequency characteristic curve of the speaker. The wider the range, the better the sound reproduction characteristics
Generally, the minimum required frequency response of the high-fidelity speaker box is 50-12500HZ (+4~-8dB), and it is enough to reach 50-16000Hz. Of course, 30-20000Hz is better.
2) Rated impedance
It refers to the impedance value measured at the input of the loudspeaker at a particular operating frequency (intermediate frequency). Usually indicated on the product nameplate, given by the manufacturer. The impedance characteristics of the speaker. The rated impedance given by the manufacturer is usually the impedance modulus at which the maximum work is expected in the rated frequency range. The rated impedance is generally specified as 4 ohms, 8 ohms, 16 ohms, 32 ohms, etc., and 3 ohms and 6 ohms are also used abroad.
3) Power
The power level of the speaker is one of the important indicators for choosing to use the speaker. It should be pointed out that the standard method of the domestic and foreign speakers is very different, because the definition of the power is different. The nominal power of a typical loudspeaker is rated power.
Rated power or rated noise power is the input power when the speaker can work continuously for a long time without generating abnormal noise. In general, the pink noise signal is used for testing, and the specific filter is used to test within the rated frequency range. According to the IEC standard, the loudspeaker to be tested should ensure that no abnormalities occur during 100 hours of continuous operation. Incidentally, the US EIA standard stipulates that the test time is 8 hours and the filters are different.
The maximum noise power is different from the rated power. It is the ability to indicate that the speaker is subjected to a large input power for a short period of time. The test time is only a few seconds or a few minutes. Generally, the maximum noise power is 2-4 times the rated power.
4) Sensitivity
The characteristic sensitivity is the sound pressure level measured at 1 m in the axial direction when the speaker is applied with a pink noise signal voltage equivalent to 1 W of the rated impedance. The sensitivity and efficiency of the speaker box are two different concepts. The efficiency is the ratio of the output sound power to the input power, but in general the speaker box with high sensitivity is also more efficient.
1) Frequency response (effective frequency range)
This indicator reflects the main frequency range in which the speaker works.
When a constant voltage source is applied to the speaker and the source frequency is changed from low frequency to high frequency, the sound pressure generated by the speaker will vary with frequency. The resulting sound pressure-frequency curve is the frequency response curve of the loudspeaker. The IEC (International Electrotechnical Commission) stipulates that the frequency limit of the sound that can be reproduced by the speaker, that is, the effective frequency range, is the frequency range in which the average sound pressure level of one octave near the peak is reduced by 10 dB in the sound pressure frequency characteristic curve of the speaker. The wider the range, the better the sound reproduction characteristics
Generally, the minimum required frequency response of the high-fidelity speaker box is 50-12500HZ (+4~-8dB), and it is enough to reach 50-16000Hz. Of course, 30-20000Hz is better.
2) Rated impedance
It refers to the impedance value measured at the input of the loudspeaker at a particular operating frequency (intermediate frequency). Usually indicated on the product nameplate, given by the manufacturer. The impedance characteristics of the speaker. The rated impedance given by the manufacturer is usually the impedance modulus at which the maximum work is expected in the rated frequency range. The rated impedance is generally specified as 4 ohms, 8 ohms, 16 ohms, 32 ohms, etc., and 3 ohms and 6 ohms are also used abroad.
3) Power
The power level of the speaker is one of the important indicators for choosing to use the speaker. It should be pointed out that the standard method of the domestic and foreign speakers is very different, because the definition of the power is different. The nominal power of a typical loudspeaker is rated power.
Rated power or rated noise power is the input power when the speaker can work continuously for a long time without generating abnormal noise. In general, the pink noise signal is used for testing, and the specific filter is used to test within the rated frequency range. According to the IEC standard, the loudspeaker to be tested should ensure that no abnormalities occur during 100 hours of continuous operation. Incidentally, the US EIA standard stipulates that the test time is 8 hours and the filters are different.
The maximum noise power is different from the rated power. It is the ability to indicate that the speaker is subjected to a large input power for a short period of time. The test time is only a few seconds or a few minutes. Generally, the maximum noise power is 2-4 times the rated power.
4) Sensitivity
The characteristic sensitivity is the sound pressure level measured at 1 m in the axial direction when the speaker is applied with a pink noise signal voltage equivalent to 1 W of the rated impedance. The sensitivity and efficiency of the speaker box are two different concepts. The efficiency is the ratio of the output sound power to the input power, but in general the speaker box with high sensitivity is also more efficient. Second, the performance indicators of the speaker system
1) Frequency response (effective frequency range)
This indicator reflects the main frequency range in which the speaker works.
When a constant voltage source is applied to the speaker and the source frequency is changed from low frequency to high frequency, the sound pressure generated by the speaker will vary with frequency. The resulting sound pressure-frequency curve is the frequency response curve of the loudspeaker. The IEC (International Electrotechnical Commission) stipulates that the frequency limit of the sound that can be reproduced by the speaker, that is, the effective frequency range, is the frequency range in which the average sound pressure level of one octave near the peak is reduced by 10 dB in the sound pressure frequency characteristic curve of the speaker. The wider the range, the better the sound reproduction characteristics
Generally, the minimum required frequency response of the high-fidelity speaker box is 50-12500HZ (+4~-8dB), and it is enough to reach 50-16000Hz. Of course, 30-20000Hz is better.
2) Rated impedance
It refers to the impedance value measured at the input of the loudspeaker at a particular operating frequency (intermediate frequency). Usually indicated on the product nameplate, given by the manufacturer. The impedance characteristics of the speaker. The rated impedance given by the manufacturer is usually the impedance modulus at which the maximum work is expected in the rated frequency range. The rated impedance is generally specified as 4 ohms, 8 ohms, 16 ohms, 32 ohms, etc., and 3 ohms and 6 ohms are also used abroad.
3) Power
The power level of the speaker is one of the important indicators for choosing to use the speaker. It should be pointed out that the standard method of the domestic and foreign speakers is very different, because the definition of the power is different. The nominal power of a typical loudspeaker is rated power.
Rated power or rated noise power is the input power when the speaker can work continuously for a long time without generating abnormal noise. In general, the pink noise signal is used for testing, and the specific filter is used to test within the rated frequency range. According to the IEC standard, the loudspeaker to be tested should ensure that no abnormalities occur during 100 hours of continuous operation. Incidentally, the US EIA standard stipulates that the test time is 8 hours and the filters are different.
The maximum noise power is different from the rated power. It is the ability to indicate that the speaker is subjected to a large input power for a short period of time. The test time is only a few seconds or a few minutes. Generally, the maximum noise power is 2-4 times the rated power.
4) Sensitivity
The characteristic sensitivity is the sound pressure level measured at 1 m in the axial direction when the speaker is applied with a pink noise signal voltage equivalent to 1 W of the rated impedance. The sensitivity and efficiency of the speaker box are two different concepts. The efficiency is the ratio of the output sound power to the input power, but in general the speaker box with high sensitivity is also more efficient. Second, the performance indicators of the speaker system
1) Frequency response (effective frequency range)
This indicator reflects the main frequency range in which the speaker works.
When a constant voltage source is applied to the speaker and the source frequency is changed from low frequency to high frequency, the sound pressure generated by the speaker will vary with frequency. The resulting sound pressure-frequency curve is the frequency response curve of the loudspeaker. The IEC (International Electrotechnical Commission) stipulates that the frequency limit of the sound that can be reproduced by the speaker, that is, the effective frequency range, is the frequency range in which the average sound pressure level of one octave near the peak is reduced by 10 dB in the sound pressure frequency characteristic curve of the speaker. The wider the range, the better the sound reproduction characteristics
Generally, the minimum required frequency response of the high-fidelity speaker box is 50-12500HZ (+4~-8dB), and it is enough to reach 50-16000Hz. Of course, 30-20000Hz is better.
2) Rated impedance
It refers to the impedance value measured at the input of the loudspeaker at a particular operating frequency (intermediate frequency). Usually indicated on the product nameplate, given by the manufacturer. The impedance characteristics of the speaker. The rated impedance given by the manufacturer is usually the impedance modulus at which the maximum work is expected in the rated frequency range. The rated impedance is generally specified as 4 ohms, 8 ohms, 16 ohms, 32 ohms, etc., and 3 ohms and 6 ohms are also used abroad.
3) Power
The power level of the speaker is one of the important indicators for choosing to use the speaker. It should be pointed out that the standard method of the domestic and foreign speakers is very different, because the definition of the power is different. The nominal power of a typical loudspeaker is rated power.
Rated power or rated noise power is the input power when the speaker can work continuously for a long time without generating abnormal noise. In general, the pink noise signal is used for testing, and the specific filter is used to test within the rated frequency range. According to the IEC standard, the loudspeaker to be tested should ensure that no abnormalities occur during 100 hours of continuous operation. Incidentally, the US EIA standard stipulates that the test time is 8 hours and the filters are different.
The maximum noise power is different from the rated power. It is the ability to indicate that the speaker is subjected to a large input power for a short period of time. The test time is only a few seconds or a few minutes. Generally, the maximum noise power is 2-4 times the rated power.
4) Sensitivity
The characteristic sensitivity is the sound pressure level measured at 1 m in the axial direction when the speaker is applied with a pink noise signal voltage equivalent to 1 W of the rated impedance. The sensitivity and efficiency of the speaker box are two different concepts. The efficiency is the ratio of the output sound power to the input power, but in general the speaker box with high sensitivity is also more efficient.
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Warning:
· Disassembling or modifying the product is forbidden.
· Installation with power on is forbidden.
· Any organic solvent chemical is forbidden.
· Acidic or alkaline adhesive is forbidden when install, neutral glass cement could be used for installation purpose, make it drying in open environment for four hours.
· Isolation and corrosion prevention on all wiring points and wire ends.
· Make sure the power wire is thick enough and ensure the voltage and connections are connected correctly before power on.
· This product should be used in a sign, do not expose it in opening site.
· Installation, maintaining should be done by professional staff.
· The power wire between power supply and module should be less than two meters to keep the same brightness on all parts.
About us
LBY is a professional manufacturer specialized in developing, manufacturing and marketing of LED light for worldwide signindustry. Since 2004, we have been devoted to designing and producing more efficient and easily-installed LED products. At the same time, we also offer customized design, OEM and work instruction service. Our general target is saving total cost for customers.
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