Will the XPA-5 Gen3 damage the Lumina III?

No. The XPA-5 Gen3 is rated for the Lumina III's 4 Ω load as it comes.

What impedance setting should I use for the Lumina III on the XPA-5 Gen3?

None: the Lumina III is 4 Ω, and the XPA-5 Gen3 needs no change for it.

Is the XPA-5 Gen3 powerful enough for the Lumina III?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 32 W per speaker, and the XPA-5 Gen3 is rated 250 W per channel. Cinema reference level, 105 dB peaks, takes about 318 W.

Does the Sonus faber Lumina III work with the Emotiva XPA-5 Gen3?

Verdict

Yes

The Lumina III is 4 Ω, and the XPA-5 Gen3 is rated for speakers down to 4 Ω, so it drives them as is.

Speaker load

4 Ω speaker, rated down to 4 Ω

Power

250 W

More than you need. About 32 W gives 95 dB peaks at 2 m

How to connect them

Connect the XPA-5 Gen3's inputs to the pre-outs of your receiver or processor: a power amplifier has no volume control of its own.
Connect each Lumina III to one of the XPA-5 Gen3's channels with speaker wire.

Plan the Lumina III and XPA-5 Gen3 in your own room.

Draw your room in 3D, place both, and see every connection checked and how loud they play at your seat. Designing is free.

Build it in your room

The specs that decide it

Sonus faber Lumina III

Impedance: 4 Ω
Sensitivity: 89 dB (2.83 V, 1 m)
Recommended amplifier power: 50–250 W
MSRP: $3,000 a pair (MSRP, September 2026)

All Lumina III specs and pairings

Emotiva XPA-5 Gen3

Channels: 5
Lowest impedance: 4 Ω
MSRP: $2,249 each (MSRP, September 2026)

All XPA-5 Gen3 specs and pairings

Questions about the Lumina III and XPA-5 Gen3

Does the Lumina III work with the XPA-5 Gen3?: Yes. The Lumina III is 4 Ω, and the XPA-5 Gen3 is rated for speakers down to 4 Ω, so it drives them as is.
Will the XPA-5 Gen3 damage the Lumina III?: No. The XPA-5 Gen3 is rated for the Lumina III's 4 Ω load as it comes.
What impedance setting should I use for the Lumina III on the XPA-5 Gen3?: None: the Lumina III is 4 Ω, and the XPA-5 Gen3 needs no change for it.
Is the XPA-5 Gen3 powerful enough for the Lumina III?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 32 W per speaker, and the XPA-5 Gen3 is rated 250 W per channel. Cinema reference level, 105 dB peaks, takes about 318 W.

Swap one of them

Sonus faber Lumina III + Monoprice Monolith 7XWorks
Sonus faber Lumina III + Denon AVR-X3900HNeeds a setting change
Bowers & Wilkins 603 S3 + Emotiva XPA-5 Gen3Works
MartinLogan Motion XT F100 + Emotiva XPA-5 Gen3Works

References

Specs verified against the manufacturer's published data. Last checked September 15, 2026.

Brand names are trademarks of their owners. Not affiliated with or endorsed by any manufacturer. 3D models are our approximations. Prices are manufacturer list prices (MSRP) as of the month shown. How we earn from buy links: affiliate disclosure.