Will the TX-NR6100 damage the R-40SA?

No. The TX-NR6100 is rated for the R-40SA's 8 Ω load as it comes.

What impedance setting should I use for the R-40SA on the TX-NR6100?

None: the R-40SA is 8 Ω, and the TX-NR6100 needs no change for it.

How many watts does the R-40SA need?

Klipsch doesn't publish the R-40SA's sensitivity or impedance, so we can't work out a wattage for it. Compare the TX-NR6100's power rating with Klipsch's recommendation.

Does the Klipsch R-40SA work with the Onkyo TX-NR6100?

Verdict

Yes

The R-40SA is 8 Ω, and the TX-NR6100 is rated for speakers down to 4 Ω, so it drives them as is.

Speaker load

8 Ω speaker, rated down to 4 Ω

Power

—

Sensitivity not published

Height decoding

Yes

Dolby Atmos and DTS:X

How to connect them

Connect the R-40SA speakers to the TX-NR6100's height terminals with speaker wire.
Run AccuEQ with its microphone at your seat.

Plan the R-40SA and TX-NR6100 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

Klipsch R-40SA

Impedance: 8 Ω
MSRP: $675 a pair (MSRP, September 2026)

All R-40SA specs and pairings

Onkyo TX-NR6100

Amplifier channels: 7
Height formats: Dolby Atmos, DTS:X
Lowest speaker impedance: 4 Ω
MSRP: $799 each (MSRP, May 2025)

All TX-NR6100 specs and pairings

Questions about the R-40SA and TX-NR6100

Does the R-40SA work with the TX-NR6100?: Yes. The R-40SA is 8 Ω, and the TX-NR6100 is rated for speakers down to 4 Ω, so it drives them as is.
Will the TX-NR6100 damage the R-40SA?: No. The TX-NR6100 is rated for the R-40SA's 8 Ω load as it comes.
What impedance setting should I use for the R-40SA on the TX-NR6100?: None: the R-40SA is 8 Ω, and the TX-NR6100 needs no change for it.
How many watts does the R-40SA need?: Klipsch doesn't publish the R-40SA's sensitivity or impedance, so we can't work out a wattage for it. Compare the TX-NR6100's power rating with Klipsch's recommendation.

Swap one of them

Klipsch R-40SA + Yamaha RX-V6AWorks
KEF Q1 Meta + Onkyo TX-NR6100Works
Klipsch RP-600M II + Onkyo TX-NR6100Works

References

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

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