Description
LM3886 5.1 Channel Amplifier Pure Final Power Amplifier Board 50W*5+160W 6 Channel Subwoofer Board
Product Description
LM3886 is a well-known high-performance audio power amplifier integrated circuit of the United States National Semi (NS), the maximum output power can reach 68W, the sound is accurate and vivid, the noise and distortion are quite low, and the protection function is relatively complete, and the performance is stable. Once the LM3886 was launched with rave reviews, it soon became the configuration of large and medium power HIFI audio amplifiers and high-fidelity active monitor speaker amplifier circuits. Le Lin, a well-known American audio manufacturer, has an expensive machine with LM3886 as its amplification core. It can be said that LM3886 is one of the audio power amplifier ICs that every audio enthusiast must play and often play. TDA7294 is a field tube output high-power integrated circuit developed by the famous European SGS-THOMSON STMicroelectronics in the 1990s. Quite courageous. It has completely changed the raw, cold, and hard tone of the previous successful playback, and is widely used in the HI-FI field. The design of the chip focuses on sound. It has high pressure resistance, low noise, low distortion, high power, soft sound and sound resistance.
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1, Use brand new original LM3886 and TDA7294. 2, Front input capacitor and inter-stage coupling capacitor adopt CBB top capacitor 3.3UF, electrolytic capacitor signal. 3, The main circuit adopts Taiwan famous brand, the main filter capacitor adopts Black King Kong with a capacity of 10000UF/50V*6, the total capacity reaches 6WUF, and the rectifier adopts a flat bridge of 50A and above to ensure strong continuous power support. 4, Five-ring metal resistance is used for the resistance, and the main circuit adopts a five-ring metal film resistor with an accuracy of ±1%, which ensures a good signal-to-noise ratio of the whole machine. 5, PCB adopts 1.6mm thick double-sided board, 2.0 oz copper thickness, and full tinning process to ensure good passing performance of large and small currents. First-class PCB quality. 6, The subwoofer part is composed of two brand new TDA7294 BTL output, strong power! The other channels are served by five LM3886s, and each channel is supported by one LM3886TF. 7, Each output of the horn protection is independently controlled by a relay, and the performance is more stable. 8, The wiring layout of the whole circuit board is quite rigorous and reasonable, and the whole PCB wiring adopts one-point grounding method. The power amplifier board works stably and reliably, with large output power; the sound is beautiful and round, and the sound field is open. It has a strong stereo effect, stable and powerful low frequency, excellent signal-to-noise ratio, wide dynamic range; clear details, excellent transient response, and can play all kinds of music with ease, and has a very good performance in the home environment.
Specification
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item
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value
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Power supply voltage
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AC dual 20V-24V, recommended dual 24V/400 watts or more
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Output power
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50W*5 (4 ohm left and right channels) + 160W (8 ohm subwoofer)
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Model Number
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TDA7294+LM3886 5.1 Channel Amplifier
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Board size
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306*97MM
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Details Images