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Description:
This power amplifier board is 2×68W dual-channel front and rear stage integrated power amplifier board. Uses original LM3886 and NE5532, the stereo sound is clearer and stronger.
The preamplifier input capacitor and the interstage coupling capacitor adopt CBB 2.2UF top capacitor. The main filter capacitor adopts audio dedicated capacitor capacity 2×10000UF, and adopts 25A and above rectifier flat bridge. ensures a strong and continuous power support.
The resistor uses a five-ring metal resistor, and the main circuit uses a five-ring metal film resistor with an accuracy of ±1% to ensure a good signal-to-noise ratio.
PCB uses 1.6mm thick double-sided sheet, 2.0 oz copper thickness, spray tin full process, to ensure good passing performance of current. First-class PCB quality.
The negative feedback tuning designed by the pre-timing part can reduce the crossover distortion and offer better hearing sense. The volume adjustment is: treble, mid-bass, and total volume.
Specification:
PCB size: 93x150mm
Power supply voltage: AC double 20V-28V (double 26V/150W or above is recommended)
Output power: 68W x 2
Speaker impedance: 4-8 ohm
Potentiometer center distance: 25mm
Package Includes:
1 Piece Amplifier Board