Mode of operation
MP3 mode button function
PREV/V-: press on one, long press the volume reduction;
The PLAY / MODE: press pause / play, long press to switch to AUX mode;
NEXT / V +: short press of a long press the volume;

Description: The boot U disk automatically into the AUX mode, insert U disk automatically switch to MP3 mode of play;

AUX mode button function
PREV/V-: long press the volume down;
The PLAY / MODE: Press and hold to switch to MP3 mode;
NEXT / V +: long press the volume increase;


Basic parameters
Operating voltage: DC10V-18V
Operating Current: 6A (MAX)
Speaker Impedance: 4Ω
Average power: ≧ 25W +25 W VS = 11-15V, RL = 4Ω THD ≦ 10%
Maximum power: ≧ 35W +35 W VS = 18V, RL = 4Ω THD ≦ 15%
Sources: U disk / SD / TF (SD / TF need to add card reader), AUX
Music Format: MP3
Audio bitrate: 16-320Kbps
Support capacity: 8GB
AUX Input: 1000mv
Remote control: Optional
Size: Length 90mm * W 45mm * H 35mm

Note: The average power when the voltage between 11-15V, the speaker impedance of 4 ohms of continuous output power greater than 25W.
Maximum power voltage 18V, the speaker impedance of 4 ohms, continuous output is greater than or equal to 35W.
AUX interface can enter computers, mobile phones, MP3 and other audio signals, the voice of the size of the input signal strength
Note:
1, must use a DC power supply, pay attention to the positive and negative voltage is not less than 10V higher than 18V.
2, the speaker port for the BTL output mode, not short-circuit or grounding.
3, you must install the radiator can be used, select a specific size ording to actual needs.
4, power reserve power as possible is greater than 1.5-2 times the output power, as far as possible coarse lead length as short as possible.

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功放

功率放大器简称功放，一般特指音响系统中一种最基本的设备，俗称“扩音机”，它的任务是把来自信号源（专业音响系统中则是来自调音台）的微弱电信号进行放大以驱动扬声器发出声音。还可以指其他进行功率放大的设备。

双声道

双声道就是有两个声音通道，其原理是人们听到声音时可以根据左耳和右耳对声音相位差来判断声源的具体位置，在电路上它们往往各自传递的电信号是不一样的，电声学家在追求立体声的过程中，由于技术的限制，在最早的时候只有采用双声道来实现。