Will this work for using external speakers with the PS4 PS4Optical Audio Cable Optical Audio to RCA Cable converter RCA Cable with 3.5 mm jack Logitech Speakers with 3.5 mm jack input?
To use analog 3.5 mm jack RCA cables and the PS4 optical audio cable, you will need a DAC; then your Logitech speakers should work.
Yes, you can purchase external speakers for your laptop from companies such as Altec Lansing or Logitech. You will just need to connect the speakers to your laptop using a USB cable, which will be supplied with the speakers. Some speakers come with a separate electrical power cable, while others use just one cable for the sound and power.
External speakers can be connected to most televisions but it is dependant on the model. It is certainly desirable to use external speakers with most televisions as the internal speakers are normally of lower quality than is desirable. Some televisions may have speaker connectors in which case, speakers can be connected directly to it. Normally, a reasonable sound will be obtained but as the amplifier within the television is usually fairly small, don't expect to…