Automotive Subwoofer Power Amplifier (Amplifier) ​​Installation Method

 Trade news    |      2017-10-23
General host power supply voltage is mostly 12V, car subwoofer source built-in power amplifier in the low voltage state of work, the signal dynamic range is small, the output power is limited. The independent power amplifier can be 12V voltage inverter to 35-40V, so that the dynamic range of the signal increases, thereby increasing the output power, and can be caused by the common power supply to minimize interference, so as to ensure the perfect sound quality reproduction. Selection of external power amplifier power and impedance should be matched with the car audio speakers, the sensitivity of the two should also be corresponding, otherwise the effect will be unsatisfactory. 

(1) fixed 

It is important to extend the life of the power amplifier reasonably and to extend its service life. The installation location should have sufficient space to keep the air flowing and prevent moisture to extend the life of the power amplifier. 

The power amplifier does not allow the face down to be fixed, which can affect the power amplifier's heat dissipation and start the thermal protection circuit. Excessive heat will shorten the power amplifier's life and reduce the output power. 

(2) connection 

1) Front RCA input: Connect the RCA connector to the LOWLEVEL output in front of the source. 

2) Rear RCA input: Connect the RCA connector to the LOWLEVEL output at the back of the source. 

3) RCA output: Connect these RCA connectors to the RCA input of the next stage amplifier. 

4) ground wire input: through a 4g power cable from the amplifier directly connected to the vehicle's chassis. 

5) 12 Input: It must be connected to the positive pole of the vehicle's battery via a coaxial fuse or automatic fuse through a 4g power cable. 

6) Remote input: it is the remote control power amplifier switch. When turned on, the 12V voltage is applied to the amplifier, which can be found from the panel on the back of the source. It appears in either the output of the antenna or the remote end. If the input is not provided, the line can be connected to the ACC position. 

7) Fuse: Make sure that the fuse specifications are selected correctly. 

8) car audio speaker output: the car audio speakers for the correct connection. 
More car subwoofer installation method Hotline: 020-86059099