全铝TDA7294液晶显示遥控功放机商品简介
TDA7294是欧洲著名的SGS-THOMSON意法微电子公司于90年代摧出的一款场管输出的大功率集成电路。颇具胆味。彻底改变了以往集成功放的生、冷、硬的音色，广泛应用于HI-FI领域。该芯片的设计以音色为重点.具有耐高压、低噪音、低失真度、音色柔和耐听。本功放板功率是2×80W双声道前后级合并式功放板.
商品详情
本品所有零部件均为原装正品，朴实无华，品质纯正；使用优质原装零部件，不仅仅是安全质量得到保障，使用寿命长，更重要是使实际性能能达到设计目标的强有力保证。追求第一流的品质是本店的一贯宗旨。
n 采用正品原装TDA7294和LC75342。
n 级间耦合电容采用WIMA顶级电容2.2UF，电解电容信号主回路采用台湾名牌，主滤波电容采用金字NOVER容量2×10000UF，采用25A及以上整流扁桥，保证强力的源源不断的动力支持。
n 电阻选用五环金属电阻，主回路采用精度±1%的五环金属膜电阻，保证了整机良好的信噪比。
n PCB采用1.6mm厚双面板材，2.0安士铜厚，喷锡全工艺，保证大小电流的良好通过性能。一流的PCB品质。
n 采用目前先进的C1237 BTL喇叭保护电路，有效消除开、关机的冲击声和直流输出保护功能,使您的喇叭更安全。
n本机采用全铝机箱，机箱表面全部采用拉丝氧化着色工艺处理。
整个电路板走线布局相当严谨合理，整体PCB走线采用一点接地方式。本功放板工作稳定可靠，输出功率大；声音优美圆润，音场开阔。立体感强，低频沉稳扎实有力，信噪比相当出色，动态范围广；细节清晰、瞬态响应出色，播放各种音乐均应付自如，在家庭的放音环境下有很不错的表现。
本板接线非常简便，只要配置极少的零部件就可以组装成一台音色优美的立体声HIFI合并式功率放大器，非常适合音响爱好者制作使用。也可以根据自己对电路的理解换上更适合、更好的零部件，享受DIY过程的乐趣。(绝对值得一试，效果非常好）
功能：
1.遥控器及前编码开关均可以控制信号源输入/音量大小/增益提升/高音/低音调节显示
2.带记忆功能(可以选择不带记忆)
3.支持遥控开关机功能
4.带静音功能
5.音量大小从“-79DB "到"20DB"，单步为2DB
6. 0DB到+20DB为增益调节
7.高音有“-10DB到+10DB”调节
低音有“-20DB到+20DB”调节
8.编码器带输入选择开关，按编码器开关可以切换输入信号（三路输入分别为CD，DVD，AUX）
基本参数：
功率：80W+80W
工作电压:AC220V
经过严格把关检测
全铜输出接线柱
珍珠棉全方位包装保护
Aluminum TDA7294 liquid crystal display control amplifier
The power amplifier board produced by the vision of electronic factory (wholesale discount)
Brief introduction of the product
TDA7294 is one of Europe's leading SGS-THOMSON STMicroelectronics company in integrated circuit of a big power output in the 90. A bile taste. Completely changed the previous integrated power amplifier, cold, hard tone, widely used in the field of HI-FI. The chip is designed to tone as the focus. Has the advantages of high pressure, low noise, low distortion, sound soft song. The power amplifier board power is 2 * 80W two-channel anteroposterior combined type power amplifier board.
Product details
The product of all parts are original authentic, chastity, pure quality; the use of high-quality original parts, is not only the safety quality guarantee, long service life, more important is the powerful guarantee to make the actual performance can meet the design goals. The pursuit of first-class quality is our consistent aim.
The genuine original TDA7294 and LC75342?.
? coupling capacitor using WIMA top 2.2UF capacitor, electrolytic capacitor signal the main circuit uses the Taiwan famous brand, the main filter capacitor NOVER with a capacity of 2 × 10000UF, with 25A and above the flat bridge rectifier, which support the powerful everfount power.
Resistance selection? Five metal resistance, the main circuit uses the metal film resistor accuracy of ± 1%, the signal-to-noise ratio of the good.
? PCB with 1.6mm thick double-sided board, 2 oz copper thickness, tin spraying the whole process, ensure the size of the current good through the performance. PCB first-class quality.
? using the advanced C1237 BTL speaker protection circuit, the impact of noise effectively eliminate open, shutdown and DC output protection function, make your horn more secure.
? this machine adopts aluminum chassis, chassis surface by drawing oxidation coloring process.
The entire circuit board layout is rigorous and rational, the overall PCB lines with one point grounding mode. The power amplifier board is stable and reliable work, high output power; a beautiful voice, sound field open. Three-dimensional sense of strong, low frequency sound solid and strong, the signal-to-noise ratio is quite outstanding, wide dynamic range, excellent transient response; clear details, play all kinds of music are handle a situation with ease, has the very good performance in the playback environment family under the.
This board is very simple, as long as the allocation of few parts can be assembled into a beautiful tone HIFI stereo integrated amplifiers, very suitable for audio enthusiasts production use. Also can be according to their understanding of the circuit for better, better parts, enjoy the fun of DIY process. (definitely worth a try, the effect is very good)
Function:
1 remote control and coding switch can control signal input / volume / gain / treble / bass adjustment
2 with memory function (can choose not to bring a memory)
3 support function remote control switch machine
4 with mute function
The 5 volume from "-79DB" to "20DB", one-step 2DB
6 0DB to +20DB as the gain adjustment
7 treble "-10DB to +10DB" regulation
The bass has "-20DB to +20DB" regulation
8 encoder with input select switch, encoder switch can be switched according to the input signal (three inputs are respectively CD, DVD, AUX)
Basic parameters:
Power: 80W+80W
Working voltage: AC220V