How do I connect Logitech Z-5500 5.1 speakers with new iMac?

Question

Please help a PC to mac converter. I did a search related to this topic and I am still confused. The articles that were related were archived and so I couldn't post a reply. With that said I need help. I purchased Logitech 5.1 speaker system to hookup with intel-based iMac 24". The speakers came with 3 color-coded RCA cables. This is the same setup as on my Dell, but the Dell had the corresponding color coded inputs, the iMac does not.
My question is how do I get 5.1 setup with iMac, and can this computer support a 5.1 system? I've read on here that people are using optical cables, but the iMac does not have an optical input either.
I appreciate any advise and any hyperlinks to cables or other accessories I need to buy would be appreciated.
Thanks.

Answer 1

When the Toslink to mini-jack digital cable arrives you would set up the 5.1 audio to the system through Audio MIDI Setup; Apps>Utilities>Audio MIDI Setup.
From the Audio MIDI Setup Help menu;
Configuring speakers for multichannel output
If you have a multichannel audio output system, you can select the speaker used to play each channel.
You must be using an audio output system that provides more than two channels of audio output.
Before you start, be sure you have connected the audio devices to your computer, turned them on, if necessary, and installed any software required by the manufacturer.
1. Open Audio MIDI Setup and click Audio Devices.
2. Choose the audio output device from the Properties For pop-up menu and click Configure Speakers.
3. If you are using an interleaved device with more than one audio stream, you can choose the audio streams you want to use with your speaker configuration.
4. If the stream you select provides enough channels for the speakers you are configuring, you cannot select additional streams.
5. Choose the type of output you want to set up from the pop-up menu.
6. For each speaker in the configuration, choose a channel from the pop-up menu below the speaker.
7. To test the configuration and speaker, click the speaker.
8. When you're ready, click OK.
If the speaker doesn't make any sound, make sure it is connected to your audio device correctly and the audio output is not muted.