Perfect Amplifier Module High Performance Audio Power Amplifier Integrated Circuit
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- Model NO.: Tda7294
- Usage: Hi-Fi, AV, KTV System
- Tube Type: IC Amplifier
- Sound Channel: 2.1
- Voltage: AC 110V
- Conductive Mode: D
- Transport Package: Red Bubble Bag, Outside Packing Box
- Origin: Guangdong, China
- Type: Professional Amplifier
- Used For: Professional
- Function: Post Amplifier, Amplifier Combined, Pre-amplifier
- Output Number: 1
- Element Number: Push-Pull Amplifier
- Trademark: SOHTRONIC
- Specification: PCB size: 236*98mm
LM3886 is a high performance audio power amplifier integrated circuit of NS in America which have long enjoyedreputation, the maximum output power is 68W, the timbre accurately, noise and distortion are quite low, but also has the more perfect protection and stable performance. LM3886 has received critical acclaim, it became a big power HiFi audio amplifier and high fidelity active monitor speaker amplifier circuit configuration in a short time. American renowned audio manufacturers have amplified green core expensive machine based on LM3886, it can be said that the LM3886 is one of the audio power amplifier IC for each audio fancier who will play and often play HiFi. TDA7294 is the integrated circuit of a big power output in the 90 which produced by European famous SGS-THOMSON STMicroelectronics company. Completely changed the previous integrated power amplifier, cold, hard tone, widely used in the field of Hi-Fi. The chip is designed for sound as a priority. Have the advantages of high pressure, low noise, low distortion, high power, soft tone song.
The products of all parts are original authentic, chastity, pure quality;
The use of high-quality original parts, that is not only guarantee the safety quality, long service life, more important is the powerful guarantee to make the actual performance can meet the design target. The pursuit of first-class quality is our consistent aim.
1--Adopted newly original LM3886 and TDA 7294;
2--Pre input capacitance and coupling capacitance adopting CBB 2.2UF top capacitor, the main circuit of electrolytic capacitor signal adopts Taiwan famous brand, main filter capacitor with Black King Kong capacity 10000UF/50V*6, the total capacity of up to 6WUF, rectifier adopts domestic 25A and above the flat bridge, a strong driving force to ensure continuous support. Ensure the supporting power;
3--The selection of Resistance is five metal resistance, the main circuit adopts the metal film resistor which accuracy is ± 1%, guarantee the signal-to-noise ratio of the product.
4--PCB adopts 1.6mm thickness double-sided board, 2 oz copper thickness, spray tin full process, ensure the current well done through the performance. First-class PCB quality.
5--The negative feedback tuning of pre tuning part design can be reduced crossover distortion, the sense of hearing.
6--Adopted the plated hole IC block which is not general, more durable!
7--The subwoofer is composed two new TDA7294 to BTL output, low pass filter is designed by the family theater type which adjustable frequency (50-150Hz), strong power! The left and right channel respectively by two LM3886.
The PCB wiring layout is quite rigorous and reasonable, the whole PCB lines with one point grounding mode. The power amplifier module is stable and reliable work, high output power; A beautiful voice and open, the sound field. Three-dimensional strong sense, low frequency sound solid and strong, the signal-to-noise ratio is quite well, wide dynamic range, excellent transient response; Clear details, play all kinds of music can be handled easily, has a very good performance in the playback under the familyenvironment.
Power supply voltage: AC double 20V-28V, suggests double 26V/300 watts or above
Output power: 68W*2 (left and right) +160W (8 ohm subwoofer)
Speakerimpedance: 4-8 ohm
PCB size: 236*98mm
Potentiometer center distance: 25mm
Potentiometer From left to right: Low frequency, low volume, the total volume of left and right, bass, treble, total volume