How to Convert a Speaker into a Car Microphone

Both the car microphone and speaker function as electro-acoustic transducers. They can also be used interchangeably with one another. The microphone wires are usually required for optimal audio input, while the speakers are wired in such a way that they tend to perform a better job sending audio out. On the other hand, the speakers and the microphone both broadcast sound in different directions.

Therefore, you can consider converting a speaker into a car microphone. A speaker can be made to function as a microphone with a few modifications. However, you need to keep in mind that the speakers' TRS connector from the audio out port on the audio playback needs to be removed.

Tools Needed

  • Speaker
  • Microphone Connector
  • Speaker Wire
  • Wire Stripper 
  • Recording Device

Step 1: Measure and Cut Wire

Measure and cut the length of the speaker wire to enable it to reach from the amplifier to the desired speaker location. This will allow it to capture the sound.

Step 2: Splitting the Speaker Wire

Split the speaker wire at both the ends. Hold the split ends and pull them at least 4 to 5 inches apart from each other.

Step 3: Connecting Ends of Speaker

Connect one end of the speaker wire to the negative and positive contacts of the speaker. Also, connect the other end of the speaker wire to the positive and negative contacts of the microphone connector.

Step 4: Recording Device

After connecting both the ends to the speaker wire and microphone connector, all you need to do is attach the microphone connector to the recording device. Make sure the connection is done properly to avoid any disturbances.

Step 5: Testing the Connection of Speakers

Test the speaker after the connection is completed on both ends. Talk into the speaker first to try it out. You might require another speaker: many times, one speaker is wired in a better way for audio input compared to the other one.

Step 6: Check the Volume

If it still doesn’t work, check the volume level of the sound from the speaker, as it might be less than a regular microphone. You would then need to adjust the input levels of the recording device in order to balance the sound of the device.

Also, keep in mind that the speakers that are utilized as a microphone end up working better at capturing low frequencies. This is because the speaker’s horn is bigger than a regular microphone. The speakers and the microphone are usually related to one another since they use the same principle in their operation of use and are designed in such a way that they work the best as one or the other.