Can anyone explain the differences between the 4 new GEQ’s
we now have to choose from ?
regards,
Mike
Have a look here: https://www.allen-heath.com/UK/Products/Pages/iLiveTrainingVideos.aspx?TOV=1&CatId=iLiveSeries&SID=36
It’s for the iLive but it is the same GEQ models.
Cheers
Richard Howey
Audio Dynamite Ltd
IDR48/IDR16/T112/R72/Mixpad,Tweak,
Dual M-Dante/DVS, 17"MBP/Logic 9/Custom Mackie Control
Constant-Q is 1/3 octave constant width with symmetrical cut/boost, ‘american’ classic if you like.
Proportional-Q is based on accurate modelling of gain / Q relationship and band interaction in a British, industry standard GEQ. You get wide Q for gentle cut/boost, which progressively tightens beyond 1/3rd octave for higher cut/boost. Higher band interaction typically results in a smoother sum of adjacent bands when compared to Constant-Q (some describe it as warmer).
Hybrid is an asymmetrical model which gives you the best of both worlds: boost is proportional-Q, cut is clinical 1/3 octave.
Digi-Q offers minimal band interaction to provide a frequency response as close to the slider position as possible.
Most people use Constant for feedback control in monitor world, and Proportional for tone-shaping, but the choice of GEQ models depends on personal preferences rather than applications. Listen to each model and pick your favourite 
Hope this helps,
Nicola
A&H
Thanks Nicola, just what I need to know!
And the Ilive webinar video was also very explicative about this topic.
Regards
Massimo
Thanks very much for the succinct explanation.
cheers,
Mike