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iMac audio issues

I have an iMac (model right before the first dual core) and have been running through an M-Audio Audiophile firewire eternal DAC for about four years. During this time, the internal iMac speakers by and large didn't work when selected in system preferences.

I now have an HRT DAC I would like to compare to the M-Audio DAC, and I can't get a signal to it. The HRT shows up in the audio preference list, but the only sound I can get through the iMac to the HRT is sound effects. I can also get sound effects when the iMac internal speakers are chosen.

I have disconnected the M-Audio and deleted all related software with no improvement. I think I have a software issue that needs to be repaired.

Anyone else deal with iMac audio issues.
128x128leahy

Showing 1 response by leahy

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leahy OP
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Thanks for the reply. I tried your suggestion. Under the "Audio Output" section, there is a channel master and CH 1 and CH 2. The master volume is not highlighted, and I can't adjust it from the zero output setting. I think this may be the problem.

I tried the rate/bit adjustments, but no setting made any difference. I'm still left with the only working audio output being the M-Audio device. I think I'll have to take this in to the Mac store and show them what's going on. They claim they have never heard of this before.

Jazzybs, that doesn't sound good at all. Please keep me informed with any updates. I'll also let you both know how my situation turns out.

Thanks again!
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