[G4] audio in

Chuck Cooper cooperc at teleport.com
Wed Jun 11 18:15:56 PDT 2008

Here is the Apple support DOC for your question:

iMac (Flat Panel), Power Mac G4 (Digital Audio) and (QuickSilver)+  
MDD: Sound Output Ports:


Briefly, the 2.5 mm jack is the audio out specifically configured for  
Apple pro speakers. I have a G4 Dual 866 and the Pro speakers, they  
are nice but for "BIG" sound I use the headphone output and an  
external amplifier/speaker/subwoofer combo.

On Jun 11, 2008, at 1:58 PM, Bill Disney wrote:

> I'm new to the group and recently bought a Apple G4 Dual 1GHz  
> (Quicksilver 2002) (M8667LL/A). At the moment I have CA (cheap)  
> audio speakers plugged in the rear Headphone jack. Is there a  
> special adapter that can be used on the 1/8'' speaker jack to plug  
> into the Audio in jack on back of G4? Would the sound quality and/or  
> volume be enhanced? Should I not be using the rear Headphone jack to  
> run any speakers but only the Audio in jack? Any suggestions  
> appreciated - thanks.~Bill

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