@VMPS-TIII – Thanks for the SoundStage measurements of those Triangle Borea BR03 speakers. Like others had mentioned, I'd never heard of them before.
This may be beyond the scope of the OP's questions, but I have a few comments about those speakers. For roughly $550 per pair, they don't seem bad. In that price range, most speakers I've known had one or several flaws, but this speaker has a mostly decent looking frequency response curve.
The
manufacturer's specs say this:
Sensitivity – 90 dB/W/m
Frequency range – 46 Hz to 22 KHz ±3 dB
Power handling – 100 watts
Nominal impedance – 8 ohms
Minimum impedance – 4.2 ohms
The SoundStage frequency response curve shows it's bass rolls off steeply below about 80 Hz. So the claim of bass down to 46 Hz just ain't so. These speaker will probably sound like they lack bass. Better bass performance in small speakers comes with a higher price, $900-$1000 per pair, in my experience.
Bass peaks around 80-130 Hz, and gradually drops as much as 4 dB by 500 Hz. Lower mid-range, 200 to 500 Hz will sound weak or withdrawn.
Between 500 and about 1300 Hz the frequency response curve is ragged looking. Above 500 Hz it rises to nearly 90 dB, and then drops sharply at 1300 Hz to nearly 82 dB. To my eye, this appears similar to other small cabinet speakers, about 8" wide, that lack baffle step compensation (BSC). I haven't heard these speakers, so I don't know for certain, but the frequency response curve suggests that there is not enough BSC in the crossover network. Depending on the music, this can result in an exaggerated 'honky' or 'nasal' sound to voices, brass instruments, or any other mid-range sound.
This is the biggest flaw in the frequency response of these speakers. If it is due to the lack of BSC, the manufacturer (or a DIYer equipped with a speaker measurement rig) could easily correct it. It's most prominent if the speaker is placed far away from walls. If the speaker is placed close to the wall behind it, the lack of BSC is essentially unnoticeable.
SoundStage measures sensitivity at about 87 dB in the 300-3,000 Hz range. That's not 90 dB, but its not bad compared to other 2-way speakers with similar sized woofers. If my thoughts about BSC are correct, that might explain the higher sensitivity. In a passive crossover, adding enough BSC will lower the sensitivity by at least about 3 dB.
These speakers have a minimum impedance of 4.2 ohms at roughly 200 Hz, but the change in impedance phase angle across that frequency range is small enough to believe these speakers are not a difficult load for most amplifiers, including the OP's Denon AVR.