Time alignment of subs

[CapMan]

Sorry if this has been asked before.

I have the option to set a delay in my amp’s sub output to align dual subs for flattest response or to use a phase shift in one sub as a proxy for time delay.

I understand that the ‘delay’ created by applying a phase change on one sub vs the other varies with frequency, but is it a good enough approximation of true time delay?

I ask because it’s an easier to make the change in the sub vs the amp.

Thanks for any guidance

 

[René - Acculution.com]

Sorry if this has been asked before.

I have the option to set a delay in my amp’s sub output to align dual subs for flattest response or to use a phase shift in one sub as a proxy for time delay.

I understand that the ‘delay’ created by applying a phase change on one sub vs the other varies with frequency, but is it a good enough approximation of true time delay?

I ask because it’s an easier to make the change in the sub vs the amp.

Thanks for any guidance

At low frequency it is much easier to emulate a time delay via a phase shift than at high frequencies. So if you don’t have a way to do it digitally with a time delay, an all pass filter or perhaps lowpass could do the trick for subwoofers.