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I am new to the imac and was hoping to install a usb sound card to get 5.1 surround system from my home theater. imac doesn't give me more than stereo sound despite running audio midi setup, the surround options are greyed out. and i can't find a decent usb sound card that can synthesize the surround sound. Anyone with information please help
thank you
iMac, Mac OS X (10.7.2)
You don't need a sound card to output surround sound from you iMac (if its a 2009 or later model). iMacs output multi-channel audio through the Mini Display Port. So to get surround sound from you iMac you just need a Mini Display Port to HDMI cable and connect the HDMI to an input on the reciever of your surround sound system and the other end into the Mini Display Port of your iMac. Once you do this and turn on your reciever, you will be able to select the multi-channel output in Audio MIDI setup
It doesn't work in Windows 7, there is no driver provided for the Mini Display port for Audio. So I can only get 2 channels, not surround sound ðŸ˜
Any ideas?
How are your speakers connected?
I was able to fix this problem, my speakers are connected to my pioneer receiver and I used it to create surround sound. iMac has toslink output which is connected to my receiver. iMac however gives only 2 channels and doesn't have option for surround sound on every track. It will not create surround sound from mp3 songs like some sound cards can. However if I play dvd that has surround sound then iMac will output 5 channels.
Thanks for the reply.
Through HDMI using a mini display port to HDMI adapter, it does support full surround sound. As when I boot into Mac OS X it comes up on movies, however when I use Windows because Apple hasn't provided a driver it doesn't work.
I do not want to use Toslink, thats my other option. I don't want to use multiple cables when this could be easily fixed with a driver.
http://support.amd.com/us/kbarticles/Pages/CatalystAGPHotfix.aspx
I found the solution to my problem, download these drivers from AMD for the Radeon graphics adapter. This will get audio out on HDMI working with surround on WIndows 7.
surround sound
