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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.
leahy

Showing 3 responses by 4est

4est
507 posts
 
go to: applications>utilities>Audio Midi

select the device you want to set up on the left. On the right you choose default and system outputs. Below that is you rate and bit depth.
4est
507 posts
 
Jazzybs:

try plugging the hrt into the actual computer, not the keyboard or other item
4est
507 posts
 
Leahy:

In audio midi> devices look for "properties for" your dac should be on the list in the pull down. Select it.

Then on the right select it as the default output. the system out put is usually best as built in (alerts go through internal speakers).

Double check that the format(rate) is acceptable. I prefer it as whatever the source is. Redbook (regular) CD is 41000.
set the bit depth at its highest, but if things still do not work you can try switching it to lower. Do not be alarmed. My guess is that you have the default output set on internal...
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