The top 10 power amplifier chips with the best sound quality are ESS Sabre, Texas Instruments, Cirrus Logic, Analog Devices, NXP Semiconductors, NTP883NTP8910A, NTP892WT837STTDA7294. ESS Sabre ESS Sabre is one of the most popular power amplifier chips on the market today.
The best sound qualityThe low power amplifier chip is TPA3116D2. TPA3116D2 is an efficient, high-fidelity, low-power amplifier chip suitable for a variety of audio systems. It has excellent sound quality performance, low distortion and high signal-to-noise ratio to provide a clear, delicate audio experience.
LM1875 LM1875 is one of the most commonly used power amplifier chips, designed for mono, not only has the advantages of mellow sound quality and large power, but also has a complete protection circuit, in the same type of chip belongs to the high-grade model.
Recommend you to use LM4562, its operating voltage range is wide, accurateHigh, sound quality is very good. The LM4562 is a high-fidelity dual operational amplifier launched by National Semiconductor in recent years, with ultra-small distortion, only 0.00003% of the total harmonic distortion and noise (THD N), in other words, the distortion of this operational amplifier is almost negligible.
LM3886 mono's 80W I'm using this Wheway S5N speaker right now and it's fine. Dual 26-28V LM4766 dual channel 8 Ohm load 40W without distortion. Used 7293 and found it too delicate. LM3886 Good, online finished board 118 yuan, power and sound quality can not be said.
RSN3502. Homemade power amplifier with the same series of integrated block sound quality is the best, with RSN3502 chip sound quality is good, for mono design, not only has the advantages of mellow sound quality and large power, but also has a complete protection circuit, in the same type of chip belongs to the high-grade model.
1, can be changed into passive speaker, remove the original box circuit board, transformer and other components can be. However, in order to consider the tightness of the speaker, the hole of the potentiometer and other componentsTypical application circuit of power amplifier.
2, the maximum input voltage VCCmax=11V; The voltage in the figure VCC typ=9v; Voltage range VCC RNG=3V--10V; Pin 7 is the positive electrode, and FIN is the large pin located on both sides of the IC, connected to the negative electrode (single power supply). Please refer to this diagram for the list of components, which are marked on the diagram. The unit of resistance is OhMs, and the unit of capacitance is UF.
3, the power supply voltage of the circuit is DC Vs=9V, and the filter capacitance is better than 1000uf. Although TEA2025B is a little hot, it is not needed yetAdd heat sink. At the input end, a resistance of about 10K is connected in series, and the ground resistance value of the input end is not too high, generally 2K~10K, which can reduce the background noise.
Power amplifier can be matched with 4,6,8,16 ohm speakers. The power amplifier has a rated output power, but the rated power in different speaker impedance, there are different sizes of output power, speaker impedance is large, power amplifier power is small; The soundBox impedance is small, power amplifier is large.
Power amplifier with 60w to 600w output with 4 ohms terminal suitable. If you want to get high fidelity, it is best to choose 10 times the power storage of the audio machine ~60w speaker choose 600w power amplifier. Note: The speaker and sound connection are impedance matching.
Yes, but not recommended. Because the first thing to consider is whether the power amplifier supports 2 European resistance, if it supports, it is no problem to push the bass, but if you go to push the speaker it is recommended not to push, the sound quality will be much worse, the car audio set speaker in the car aftermarket is basically 4 euros.
According toOhm's law: I = V/R, when connected together, means that the voltage applied is the same. So, assuming the voltages are 1,4 and 8 ohms, that is, 1/4 = 0.25A current and 1/8 = 0.125A. Obviously, the current on a 4-ohm speaker is twice that of an 8-ohm speaker.
Although the resistance value of the speaker is 4 ohms, it can greatly improve the playback power of the amplifier, but the power of the speaker is too large, so it can only be barely driven, and when the large dynamic and large volume is played, it is likely to appear the distortion phenomenon of insufficient bass. It is recommended that the power of the speaker be smaller than that of the power amplifier.