Connecting Via Parallel Circuit

• 1). Disconnect the negative battery cable from the vehicle's battery. Use a Phillips-head screwdriver to loosen the negative cable's clamp, and remove the clamp from the negative lead post of the battery.
  
  
• 2). Connect speaker wire from the positive output of the amplifier to the positive input of the first DVC subwoofer. Connect another speaker wire from the negative output of the amplifier to the negative input of the DVC subwoofer.
  
  
• 3). Connect speaker wire from the positive input of the first subwoofer to the positive input of the second DVC subwoofer. Connect speaker wire from the negative input of the first subwoofer to the negative input of the second DVC subwoofer.
  
  
• 4). Place the negative battery cable clamp around the negative battery lead. Tighten the clamp with a Phillips-head screwdriver.
  
  

Connecting DVC Subwoofers in Series

• 1). Disconnect the negative battery cable from the vehicle's battery.
  
  
• 2). Connect the negative output of the amplifier to the negative input of the first subwoofer, and the positive output of the amplifier to the positive input of the subwoofer, using speaker wire.
  
  
• 3). Connect the positive input of the first DVC subwoofer to the negative input of the second subwoofer.
  
  
• 4). Connect the negative input on the second subwoofer to the positive input on the same subwoofer.
  
  
• 5). Connect the positive input of the second subwoofer to the negative input of the first subwoofer. Reconnect the negative battery cable to the negative lead post. Tighten the cable's clamp with a Phillips-head screwdriver.