Different Amplifiers Changing the Width of Soundstage


With one amp, I can stand directly in front of the left speaker and still hear the right speaker. 

With another amp I have, I can stand directly in front of the left speaker and it's like I can't hear the right speaker. 

Does anyone know why the different amps are behaving so differently to the same speakers?  
seanheis1

Showing 2 responses by atmasphere

Do amp designers voice the phase shift? 

You avoid phase shift either by having very wide bandwidth (in excess of 100KHz) or by having at least 35dB of feedback at 20KHz. The latter is very difficult to do BTW.

 

 

Phase shift can also cause this issue. Along with the others mentioned (assuming the recording used for this is the same).