"I dont play music loudly at all and not for long periods."
Based on that statement: don't sweat it!
Most SS amplifiers don't have a problem with lower impedances, but will increase output, as long as things don't get crazy.
If they do get crazy (ie: impedances too low/too much power requested): things can heat up quickly.
"Aria specs state they have a nominal impedance of 8ohm but a minimum low of 2.8ohm. That min. low impedance is confusing."
Any driver with a voice coil moving within a magnetic gap, can exhibit some pretty wide variations in it's impedance curve, as opposed to it's nominal value (ie: 4 or 8 Ohm, during operation, due to things like back EMF, enclosure resonances/design and frequency. At a driver's lowest frequencies, it will usually also exhibit it's lowest impedances.
https://audiojudgement.com/speaker-impedance-curve-explained/
Based on that statement: don't sweat it!
Most SS amplifiers don't have a problem with lower impedances, but will increase output, as long as things don't get crazy.
If they do get crazy (ie: impedances too low/too much power requested): things can heat up quickly.
"Aria specs state they have a nominal impedance of 8ohm but a minimum low of 2.8ohm. That min. low impedance is confusing."
Any driver with a voice coil moving within a magnetic gap, can exhibit some pretty wide variations in it's impedance curve, as opposed to it's nominal value (ie: 4 or 8 Ohm, during operation, due to things like back EMF, enclosure resonances/design and frequency. At a driver's lowest frequencies, it will usually also exhibit it's lowest impedances.
https://audiojudgement.com/speaker-impedance-curve-explained/