How to make Powerful Subwoofer Amplifier 500W with Transistor

 

Have :

1.Transistor

• B688 x2
  
• D718 x2
  
• C2383
  

2. Resistor

• 5W0.47 x5
  
• 2W 1K
  
• 2W 22K
  
• 68

3.Capacitor

• 4700uf 50V
  
• 10uf 50V
  

4.Transform

• 25V

5.POT

• B50K