Connecting a Microphone to a Speaker with Only Optical Input

Connecting a microphone directly to a speaker that only has an optical input can be a bit challenging, especially since optical inputs are typically designed for digital audio signals. However, there are several methods you can use to make this connection work. Let’s explore these options in detail.

1. Use an Audio Interface

Description: An audio interface can connect your microphone and convert its analog signal to a digital signal.

How to Connect:

Connect your microphone to the audio interface using an appropriate cable, such as an XLR or 1/4” cable, depending on the mic. Connect the audio interface to your speaker using an optical cable. Ensure the audio interface is set to output via optical.

2. Microphone with USB Output

Description: Some microphones have a USB output that can connect to a computer.

How to Connect:

Connect the USB microphone to a computer. Use software to route the audio to the optical output of the computer if it has one, or to an audio interface. Connect the computer or audio interface to the speaker using an optical cable.

3. Mixer with Optical Output

Description: A mixer can take multiple audio inputs and mix them, and some mixers offer an optical output.

How to Connect:

Connect your microphone to the mixer. Set the mixer’s output to optical. Connect the mixer to the speaker using an optical cable.

4. Use a Digital Signal Processor (DSP)

Description: A DSP can take in analog audio signals and convert them to digital signals.

How to Connect:

Connect your microphone to the DSP. Output the signal from the DSP to the speaker via optical.

5. Optical to Analog Converter (if applicable)

Description: If your speaker has a built-in DAC (Digital-to-Analog Converter) but only accepts optical input, you might need a more complex setup involving a device that can convert the analog mic signal to digital and then output it via optical.

How to Connect:

Connect the microphone to an appropriate device that can convert the signal. Connect that device to the speaker using an optical cable.

Conclusion

Depending on your specific setup and equipment, you may choose one of the above methods. If you already own an audio interface, mixer, or DSP, that might be the easiest route. If you are considering purchasing new equipment, look for an audio interface or mixer with optical output capabilities.

Optical Input

Optical inputs are commonly found on modern audio equipment, including speakers, mixers, and interfaces. They use a TOSLINK style connector and offer a convenient, interference-resistant connection for digital audio signals. By understanding the different options available, you can successfully connect your microphone to a speaker with only an optical input.