I had read when the Equinox frequencies were analyzed there was little frequency difference across programs. As in Park1 was not weighted any lower frequency wise than Park2. As a matter of fact what I read seemed to say they were practically the same across all programs, and it must be unique individual processing for each program that is where the difference between them lies.
Just going on what I have read.
Not sure where you read that, but it's clearly listed in the manual that the frequency weighting is different for each program setting.
From the manual:
Park 1 Multi-IQ processes a l
ower frequency weighting of the
multi-frequency signal, as well as using algorithms that maximize
ground balancing for soil, to achieve the best signal to noise ratio.
Hence Park 1 is most suited for general detecting and coin hunting
Park 2 Multi-IQ processes a
higher frequency weighted multi-frequency
signal while ground balancing for soil.
Same for Field 1 and Field 2
Beach 1 Multi-IQ processes a
low frequency
weighted multi-frequency signal, and uses special algorithms to
maximize ground balancing for salt.
Beach 2 Multi-IQ processes a
very low weighted multi-frequency combination, using the same algorithms as Beach 1 to maximise ground
balancing for salt.
Check out the manual, it explains all of this and is a great resource!