From Stereophile:
The Focal-JMlab Diva Utopia Be's ported enclosure was tuned to approximately 27Hz, with minimum impedance of 3.38 ohms at 100Hz. I would judge this speaker to be of average difficulty to drive for any amplifier comfortable with a 4 ohm load, and I would rate its nominal impedance at 4 ohms. The speaker's sensitivity measured approximately 87dB/2.83V/m.
Maybe this isn't your speaker?
The Redwine may be able to drive 4 ohms, many amps are, but that does not mean it doubles power into 4 ohms compared to its power into 8 ohms, and since Redwine does not publish the 4 ohm spec for the 30.2 there's no way to verify it. I recall Vinnie stating on another website that it did not.
The Street dot com says this in their review:
The amp is capable of delivering 30 watts per channel into any speaker load from 4 to 16 ohms.
That's essentially what tube amps do...deliver the same power into various impedance loads, and it's why many tube amps don't sound right on speakers with wide impedance swings. 30 watts into 4 ohms produces fewer decibels than 30 watts into 8 ohms, thus perceived pronounced upper frequencies.
You have Voltage Paradigm speakers, and two Power Paradigm amplifiers. A mismatch. Ralph Karsten has a white paper on this topic
here.
This is a moot point since you state you will not change amps.
So, perhaps a change to Power Paradigm speakers (like Devore, Coincident, Merlin, Audiokinesis...) will help get you closer to where you want to be.
Anyway, good luck.