1, LM4766 and TDA7293 which sound quality circuit is good, let alone TDA7293 good. The TDA7293 power amplifier is among the world's bestThe world of excellent skills.
2, TDA7293, TDA7294, LM4766 (approximately equal to LM1875*2), LM3886 is simulated; TDA7498ET, TDA8590 (TDA8950) are class D (so to speak numerical); If there is no requirement for power consumption and heating, you can choose a traditional analog circuit, otherwise please choose Class D. As for sound quality, the style is not the same, but I tend to prefer Class D, which is simple, low heat, low power consumption, and high sound reproduction.
3. Judging from the parameters alone, LM3886 seems to be the best.Second, the TDA7294 is a little bit worse, but it also depends on each person's preferences and listening habits, in fact, over the years, the reputation of these chips are very good, the price is similar, there is no need to be too tangled. I think 7293 is the best, the actual use of 7294 more, feel the Italian TDA more gall. 7293 parameters are much better than 7294, but it's not easy to buy.
1, good. TDA7296 is a new product from STDMOS high power audio amplifier integrated circuit it and TDA7293TDA7294TDA7295 is the same pin, it has a wide range of operating voltage; High output power (up to 60W output power), and has quiet standby function, small noise and distortion, and overheating, short circuit protection.
2, I think 7293 is the best, in fact, I use more 7294. It feels like Italy's TDA is bolder. The 7293 parameters are much better than the 7294, but it's not easy to buy. The TDA7296 is a new DMOS from STPCRate-audio power amplifier integrated circuit. It is the same pin as the TDA7293TDA7294TDA7295 and has a wide operating voltage range. High output power (up to 60W output power), silent standby function, low noise and distortion, overheating and short circuit protection.
3, better. The LM3886 is a mono, high-performance audio amplifier IC, shown in Figure 3. It is the largest power model of the "Overture" audio amplifier series of National Semiconductor Company, the continuous output power can reach 68W, including the self-developed SPIKc protection circuit, no need to connect various protection circuits.
1, promote the sound quality is very good. 7293 is a field effect tube amplifier better than 7293 power amplifier chip , sound quality close to the vacuum tube amplifier, with a than 7293 power amplifier chip warm sweet sound, gorgeous transparent timbre. The stereo audio amplifier circuit made with TDA7293 outputs a lot of power per channelOutput up to 100 watts, each electrical performance index is higher, sound quality is better.
2, Fool 2100. The sound quality of the Fool 2100 is very good, crisp, no noise, and sounds very comfortable, which is unmatched by other speakers. The Fool 2100 uses a 12-volt power transformer, and the performance of the power amplifier is also quite good.
3, TDA7297294 is a famous brand power amplifier IC, is the ace power amplifier IC produced by European Italian and French companies, and the LM3886 of the United States are the best high-power amplifier IC. The difference is that 3886 is an ordinary transistor power amplifier, and the sound quality is relatively mellow3886 mono 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 better than 7293 power amplifier chip , online finished board 118 yuan better than 7293 power amplifier chip , power and sound quality can not be said. How to improve the sound quality of power amplifier: All coupling capacitors use high-quality tantalum capacitors. All resistors use metal film and are thermally stableWell.
TDA1521 (12W*2); TDA2030A (22W); LM1875 (25W); TDA1514A (30W); SK3875 (35W); LM3886 (56W); TDA7293 (60W); The LM12CLK (80W) and above are dual power supplies. TDA2009A (12W*2); TDA1520 (20W); TDA7580 (50W*4) These are single-supply powered. Better power amplifier chip than 7293 You want high sound quality so the digital power amplifier IC is not listed.
LM3886TF, the biggest advantage of the chip is that it has the output anti-impact measures, so there is no need to use the horn relay delay, which is most suitable for subwoofer, because the strong vibration of the subwoofer is easy to make the relay contact jump. LM38863TF is a high-power audio amplifier chip launched by NS Corporation (National Semiconductor Corporation of the United States) in the early 1990s.
2, if 4 inches is really 70w6 euros, lm3886 and tda7297294x2 group 0 are all good, and the tda on the market is a little cheaper.
3, LM3886 good, online finished board 118 yuan, power and sound quality do not have to say. How to improve the sound quality of power amplifier: All coupling capacitors use high-quality tantalum capacitors. All resistors use metal film and have good thermal stability. The power filter circuit uses large capacity electrolytic capacitor, large inductive inductance, etc., to discharge the interference clutter of the power supply. Select high quality power amplifier block, frequency divider and other components.
Both are popular high-power amplifier integrations. Which is better? It's a matter of seeing who knows what. 3886 is a product of the United States Office, 3886 is a product of Philips. 3886 sound fine details are good, 7294 bass beautiful penetration is strong, in general, 7294 more, but there are a few people recommend 388 and separate power amplifier ratio, integrated power amplifier structure is simple and easy to maintain, but the cost of maintenance is high. The above comments are for your reference.
good, large power, sound quality is also good, with a light gall taste, the transformer needs 300WThis is the best.
TDA7294 Secondly, TDA7294 is a little bit worse, but it also depends on each person's preferences and listening habits, in fact, over the years, the reputation of these chips is very good, the price is similar, there is no need to be too tangled. I think 7293 is the best, the actual use of 7294 more, feel the Italian TDA more gall. 7293 parameters are much better than 7294, but it's not easy to buy. LM4677 has not been used, it is hard to say, it seems that the reputation of the forum is not very good.
The TD7293 has a wider voltage supply range, up to dual 50V DCPower on. This means greater dynamic range and higher output power than the TDA7294.
Operating voltage range: ±12V - ±60V; Peak output current 10A; Output power: ±40V, 8Ω 100W; ±45V, 8Ω 140W; ±29V, 4Ω 100W; Total harmonic distortion (Po=5W, f=1KHz) 0.005%; The conversion rate is 15V/μs (TDA7294 is 10V /μs, the higher the conversion rate, the richer the sound quality level); Input impedance 100KΩ; Frequency response 20Hz-20Kz; Works in Class A and B status.