Alpine Type-R SWR-1222D Wiring Diagram

If you are looking for a powerful subwoofer that can deliver an impressive bass response, the Alpine Type-R SWR-1222D is an excellent choice. However, you need to ensure that you wire it correctly to get the best performance out of it. In this article, we will guide you through the wiring process and provide you with a detailed wiring diagram for the Alpine Type-R SWR-1222D.

What You Will Need

Before you begin wiring, you will need to gather some tools and materials. Here is a list of everything you will need:

Wire cutters Wire strippers Crimping tool
Amplifier Speaker wire Subwoofer enclosure
Alpine Type-R SWR-1222D subwoofer Terminal cups Screws and screwdriver

Make sure you have all these items before you start wiring your subwoofer.

Wiring Diagram

The wiring diagram for the Alpine Type-R SWR-1222D is shown below. This diagram is for a single subwoofer connection to a mono amplifier:

Wire Color Function
Red Positive (+) speaker terminal
Black Negative (-) speaker terminal
Blue Remote turn-on
Green Chassis ground

Note: This wiring diagram assumes that you are using a mono amplifier. If you are using a multi-channel amplifier, the wiring will be slightly different. You will need to consult your amplifier’s manual for the correct wiring diagram.

Step-by-Step Guide

Step 1: Mount the Subwoofer

The first step is to mount the subwoofer in the enclosure. Make sure the enclosure is suitable for the Alpine Type-R SWR-1222D subwoofer. Refer to the subwoofer’s manual for recommended enclosure specifications.

Step 2: Attach the Terminal Cup

Attach the terminal cup to the subwoofer enclosure. The terminal cup will have two binding posts: one for the positive wire and one for the negative wire.

Step 3: Strip the Wires

Strip about 1/2 inch of insulation from the end of each wire that will be connected to the subwoofer. Use the wire strippers to do this.

Step 4: Crimp the Connectors

Using a crimping tool, crimp connectors onto the ends of the wires. Use spade connectors for the positive and negative wires, and a ring terminal for the ground wire.

Step 5: Connect the Wires

Connect the wires to the subwoofer’s binding posts. Connect the positive wire to the positive (+) terminal, and the negative wire to the negative (-) terminal. Connect the ground wire to a suitable grounding point on the vehicle’s chassis.

Step 6: Connect the Remote Turn-On Wire

Connect the blue wire from the subwoofer to the remote turn-on terminal on the amplifier. This will tell the amplifier to turn on the subwoofer when the car stereo is turned on.

Step 7: Test the Subwoofer

Finally, test the subwoofer’s performance by playing some music through it. Adjust the amplifier’s gain and crossover settings to get the best sound quality.


What is the Alpine Type-R SWR-1222D?

The Alpine Type-R SWR-1222D is a 12-inch subwoofer that is designed for powerful and accurate bass response. It has a peak power handling of 3,000 watts and a nominal power handling of 750 watts.

What is a mono amplifier?

A mono amplifier, also known as a monoblock amplifier, is an amplifier that has only one channel. It is designed to power a single subwoofer or a set of subwoofers wired in parallel.

What is a remote turn-on wire?

A remote turn-on wire is a wire that tells the amplifier to turn on when the car stereo is turned on. It is usually connected to the car stereo’s power antenna or accessory wire.

Do I need to use a subwoofer enclosure?

Yes, the Alpine Type-R SWR-1222D subwoofer must be mounted in an enclosure that is suitable for its size and power handling. The enclosure helps to optimize the subwoofer’s performance and protect it from damage.

What is the best wire gauge for subwoofer wiring?

The best wire gauge for subwoofer wiring depends on the subwoofer’s power handling and the length of the wire. For the Alpine Type-R SWR-1222D, we recommend using 12-gauge wire for runs up to 25 feet and 10-gauge wire for runs up to 50 feet.

By following these steps and using the wiring diagram provided, you can wire your Alpine Type-R SWR-1222D subwoofer with confidence and enjoy a powerful and accurate bass response in your car sound system.