Is DEQX a game changer?

Yes, I have an active setup with 3-way Open Baffle speakers on the HDP-5 (4 x 15" bass, 2 x 8" mids, 2 x Ribbon tweeters) & two Subs (2 x12", 2 x 10") on the slave HDP-3. All running as a 5-way stereo setup, 12 drivers in total - crossovers, time & phase alignment handled by the DEQX processors.

Whatever you do with P1 & P3, you can have one configuration (assuming your calibration for the main speakers is full range) but disable the subs on P1. However, your comment about the speaker cables doing highs and mids & subs taking care of low frequencies suggests they may not be calibrated as full range so P1 would have no bass frequencies without the subs. Was your initial measurement of these speakers as full range with subs disabled?

If that’s the case then make sure that the speaker calibration you use for P1 is based on a full range speaker measurement, not just highs and mids.

Yes you're right they weren't calibrated as full range. It was only done for the mids and highs, and If I disconnect the subs I wont get any bass frequencies. Can the deqx be configured with full range for P1 (once we do this) and then for P3 using the subs as I am now on the fly? I assume that should be easy right? Or do we have to change Deqx profiles?

Nice setup btw. Wow, that bass must be out of this world.. I am thinking of getting the HDP5 to future proof myself in case I go active, instead of the premate. Plus the screen looks pretty cool 

Yes...

P1 - configure as ’single amp with stereo subwoofers’ & use a (new) full range measurement & calibration without subs. Disable the subs in this config

P3 - configure as ’single amp with stereo subwoofer’ & use the calibration you already have. Enable subs in this config.

In my setup, bass goes down to 16hz -2dB which I’m happy with. You mention the screen - funnily enough I have it disabled, too much of a distraction when I’m listening in a darkened room.

If you go active, try Open Baffle because the transients they can produce give sense of realism I haven’t even experienced with horn speakers. At very high volume, drums ARE drums & it’s almost impossible to hear the difference between a well recorded acoustic guitar & the real thing.

DEQX measurements indoors can produce great results but done properly outside, the results really are in a different league. It is worth the effort.

So I got the hdp5 and installed the Dave. Sounds pretty good. I tested the Dave without the deqx in the chain and lteffered the deqx on its own. With the deqx and Dave it sounds very transparent. I'll need a bit more time with it together. It really showed me again how good the deqx is.

I still have the subs running seperately from the deqx. Do you think it will sound better as full range into the Dave? Alan from deqx seems to think I would get worse results going full rangez even though my speakers are designed to go full range without the subwoofer rca plugged in.

On a side note can the deqx delay the subs by a full 1.5seconds? I need to know because the mscaler delays music by about 1.5seconds and need to know if the deqx can do that if I keep my subwoofers in the chain? 

I agree with Alan, it gives the opportunity to place the subs in order to manage room nodes better than using just a pair of full range speakers. 

However (I'm not at home to check this at the moment), I'm pretty sure you could not add as much as 1.5 seconds delay to the subs. I believe the max available is in milliseconds so this probably means you could not use them with music.