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filters and phase shift

I just mastered a 5.1 live concert for DVD-V. In the mains I filtered out some low rumble but left the LFE alone as there was content in there that needed to be, using analog outboard gear. When I applied the filters to the mains, I noticed that the sub sounded disconnected from the mains. I kicked in bass management and the low end goes bye bye. Ahh, the filters phase shifted the program.

EQ Plugins cause Phase Shifting?

Hey All, I just started to wonder about this as I was reading a thread on the Sonar user's forum. Hardware EQ does cause phase shifting because of the reactive components (capacitors and inductors) in the circuitry. What about software versions? I'm curious to know how the algorithms effect frequency in the virtual world. Is it by manipulating the time line aka phase?

Calculating degree of phase shift bewteen 2 sine waves!

Hi everyone, Im new here (so hopefully Im posting this in the right place/want to apologise in advance if Im not...)
I want to calculate the degree of phase shift between two sine Wavesof the same frequency. I have the following formula (but cant find the right symbols on my keyboard (!)):

degree of phase = time difference * frequency * 360