RWS12CA: Inputs, Outputs & Functions

Introduction

The Rockville RWS12CA is a slim 12-inch active subwoofer with a built-in amplifier, making installation simple and space-efficient. This guide will explain all the wiring connections, inputs, and controls so you can set up and optimize your subwoofer with ease.

Step 1: Audio Input Options

The RWS12CA offers two ways to connect to your head unit, depending on whether it has RCA outputs.

1. High-Level Input (For Head Units Without RCA Outputs)

• Use the included high-level input wire harness:
  1. Plug one end into the High-Level Input on the subwoofer.
  2. Connect the left and right channel wires to the speaker output wires of your head unit.

2. RCA Input (For Head Units with RCA Outputs)

• Use standard RCA cables:
  1. Connect one end of the RCA cable to the head unit or music source.
  2. Plug the other end into the RCA inputs on the subwoofer.

Step 2: Bass Remote Knob Connection

• Allows you to control the bass volume from the front seat.
• To connect:
  1. Plug one end of the remote cable into the bass remote knob.
  2. Connect the other end into the remote input on the subwoofer.
  3. Mount the bass knob within easy reach of the driver.

Step 3: Powering the Subwoofer

The RWS12CA requires a direct power connection to your vehicle’s electrical system.

1. 12V Power Terminal → Connect to the positive terminal of the vehicle’s battery.
2. Remote Terminal → Connect to either:
   • The ignition/accessory wire.
   • The remote output from the head unit.
3. Ground Terminal → Connect to a metal chassis ground in your vehicle.

Tip: If the subwoofer does not turn on, check the wiring connections and fuse.

Step 4: Adjusting Sound Settings

1. Gain Knob

• Controls the volume level of the subwoofer.
• Setting Tip:
  1. Increase your head unit’s volume to near distortion.
  2. Adjust the gain knob just before distortion.

2. Low-Pass Filter

• Determines the highest frequency played by the subwoofer.
• Example:
  • 100Hz setting → The subwoofer plays only 100Hz and below.

Step 5: Final Setup

1. Double-check all wiring connections.
2. Turn on your head unit and play music to test bass output.
3. Adjust the gain and low-pass filter for the best sound balance.
4. Use the bass remote knob to fine-tune bass levels as needed.

Conclusion

The Rockville RWS12CA is an easy-to-install active subwoofer that delivers deep bass in a compact design. By understanding its wiring, inputs, and controls, you can ensure optimal performance.