Description

PA series powered amplifer utilises metal sealed  transistors of Motorola. It  is a kind of professional amplifer with high power, multi-function, high quality, beautiful  tone and good stability  for  indoor or outdoor performance.  In order  to achieve public praise, PA series amplifer has been  improved many times  for appearance design,  interior construction, circuit design and  tone expression. Now  it  is with outstanding  tone analysis and expression performancce, and could be a leading product in the industry. It is also capable of comparing with famous brand overseas. The stability of the whole equipment is also implemented with repeatedly broken test. The completed function for application shows the humanized design of PA series powered amplifer. 
 

Function Feature 
 

PA series utilises H-grade line array arrangement with big-poor flter capacitor to ensure strong output of dynamic electric current. In the equipment, there is high/low pass flter with independent A/B channel, which ensures it can meet requirements from different felds.

For PA series,  there are 80% parts assembled by automatic SID  technic, so  it can completely ensure products are standard. From parts  to  the whole equipment, it is produced in scientifc assembly line, it reduces the probability of mistake from workers, and makes better ensurance for the unity of products quality.  
 

PA series  is a special design  for project. For each model of equipment,  it  is with advanced  technology  for durability and stability, and  is also made good selection from transformer, poor capacity, input capacity, and  transistor, etc. It makes sure for perfect output with low distortion, even when the driver loaded impedance is low, so keeps balance for the tone and speaker system. Therefore, PA series is really suitable for large and complicated speaker project.

Specification

Circuit Protection 
 

The circuit protection  for PA series  is not only  focus on protecting  the surface of  the speaker, but more  importantly  is  to make  it more suitable  for bad working environment and make it work more comfortably. 
 

PA series utilises more perfect  themo-control protecting circuit, so  to solve  the problem of damage from heavy heat. When the temperature reaches 85°C in the machine, the power will be cut off from the speaker. When the temperature draws back to 80°C, the speaker will automaticly recover to work normally. 
 

The circuit breaker  function of PA series, makes sure  that  the speaker will be safe and work well even when  the operator does some mistakes or something unexpected happens. (it needs to restart when circuit breaking)  
 

PA series have special protect from over current, over voltage, over loading, and restrict range automaticly. The soft switch assures the speaker works normally in any cases.

Material of Amplifer 
 

PA900 utilises 12 pairs of metal  sealed  transistors of Motorola + 8 pairs of plastic sealed  transistors of Toshiba, and new style 

aluminum alloy panels + U shape radiator for heat emission. 
 

PA700 utilises 10 pairs of metal  sealed  transistors of Motorola + 8 pairs of plastic sealed  transistors of Toshiba, and new style 

aluminum alloy panels + U shape radiator. 
 

PA550 utilises 8 pairs of metal sealed  transistors of Motorola + 8 pairs of plastic  sealed  transistors of Toshiba, and new  style 

aluminum alloy panels + U shape radiator. 
 

PA350 utilises 6 pairs of metal sealed  transistors of Motorola + 2 pairs of plastic  sealed  transistors of Toshiba, and new  style 

aluminum alloy panels + U shape radiator.