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iMac + External Speakers - crackle and pop!

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macrumors 6502a
Original poster
Feb 10, 2003
872
931
Outside the EU
Hi all,

I have just bought the Acoustic Energy Aego sat/sub speakers for my 24" iMac...and excellent they are too. A HUGE improvement on the built in speakers.

However, I occasionally get an electronic 'pop' or crackle from the satellites. Only happens occasionally. If I plug the speakers in to my iPod (2nd gen) all is perfect, so I assume the iMac is picking up interference from the mains or network and passing it on. Anyone go a similar problem?

I assume my options are to try a better gangway adapter (or UPS) with noise filtering, or perhaps (but this seems a bit overkill) a USB audio output device rather than using the iMac audio out.

Any advice much appreciated. I cannot begin to describe just how much better the AE Aego's are, but the interference is annoying...
 
I'm going to revive this again as well!

I recently connected up the same speakers to my 24" imac, and I am getting a slight interferance and a loud hiss/cracking every now and then, almost like feedback.

Any ideas?
 
A similar thing is happening to me with my macbook pro and Fostex PM0.4 studio monitors.
I believe it has nothing to do with the speakers themselves (simply because I hear this popping noise when using headphones as well)
It seems like after a period of no noise (music or sound effects) the external sound output will "disengage" and then re-engage immediately before use again.
The result is a loud static popping noise.
I am finding this increasingly annoying.
Anyone know how to fix this?
 
duncanbrodie1 said:
A similar thing is happening to me with my macbook pro and Fostex PM0.4 studio monitors.
I believe it has nothing to do with the speakers themselves (simply because I hear this popping noise when using headphones as well)
It seems like after a period of no noise (music or sound effects) the external sound output will "disengage" and then re-engage immediately before use again.
The result is a loud static popping noise.
I am finding this increasingly annoying.
Anyone know how to fix this?
Click to expand...

Possibly.
I have had this issue on a 24" and my new 27" i5 iMac. First was with a set of JBL Creatures and more recently a pair of M-Audio AV40's. I bought a new APC surge protector with RF filtering and plugged the speaker's AC adapter in it and left the iMac plugged into to a different APC surge protector. That seemed to resolve it. I recall it has something to do with a current loop.
I think the underlying issue is Apple using a less than robust Audio jack.
My older PowerMac G5 had a similar issue come to think of it!
Mark
 
Markovich said:
Possibly.
I have had this issue on a 24" and my new 27" i5 iMac. First was with a set of JBL Creatures and more recently a pair of M-Audio AV40's. I bought a new APC surge protector with RF filtering and plugged the speaker's AC adapter in it and left the iMac plugged into to a different APC surge protector. That seemed to resolve it. I recall it has something to do with a current loop.
I think the underlying issue is Apple using a less than robust Audio jack.
My older PowerMac G5 had a similar issue come to think of it!
Mark
Click to expand...

That sounds about right.
Thanks Mark
 
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