As I continue to play with my "new" iBook G4, I have run across several fairly minor, yet infuriatingly obnoxious issues... one of which is the extremely common "popping" audio issue that seems to effect a variety of Mac's. Surprisingly, in my search, I was unable to find a suitable fix on any of the Apple forums. Some sites recommended reverting the audio kernel extension to an older version, however, I am always remiss to downgrade my system, so I began looking for a alternative solution to this issue... here is what I found:
Firstly, to be specific, my issue is only apparent when listening to music and does not occur when audio is not playing (as some have experienced). My music sounds crackly and poppy through a pair of mid-range headphones. This issue is apparent in iTunes, Vox and VLC and is seen in all my music files, regardless of audio quality.
The Work-Around: In VLC, Open the Equalizer window and select the "Headphones" preset, Enable the "Two-Pass" option and the Enable the EQ settings. You may need to adjust the Preamp settings to suit your headphones. This setting should eliminate any poppy, crackly audio you were experiencing.
Note: Strangely, in Vox (my previously default music player), similar EQ modification were ineffective in solving this issue. I didn't even try it in iTunes, as iTunes SUCKS!
Another Note: If the audio sounds too tinny, you may be able to get away with turning off the Two-Pass option, for richer sound, while still eliminating the crackle.
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