27" iMac - 3.5mm Audio Output

[Benhama]

I have just plugged in my speakers into my new iMac, that were formerly attached to my now replaced PC. They are Creative I-Trigue L3800, which is a 2.1 system. The speakers work fine, but the sub is not producing anything, but is okay when plugged into my PC. I've just tried the speakers on my MacAir and have the same result as for my iMac. Could it be that Macs are not able to drive the speakers?

 

[kaellar]

I have just plugged in my speakers into my new iMac, that were formerly attached to my now replaced PC. They are Creative I-Trigue L3800, which is a 2.1 system. The speakers work fine, but the sub is not producing anything, but is okay when plugged into my PC. I've just tried the speakers on my MacAir and have the same result as for my iMac. Could it be that Macs are not able to drive the speakers?

Those speakers have their own amps, so I guess the reason is some compatibility issue (idk what specifically, since I never heard of something like that).