Will the TX-RZ50 damage the R-605FA?

No. The TX-RZ50 is rated for the R-605FA's 8 Ω load as it comes.

What impedance setting should I use for the R-605FA on the TX-RZ50?

None: the R-605FA is 8 Ω, and the TX-RZ50 needs no change for it.

Is the TX-RZ50 powerful enough for the R-605FA?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 4 W per speaker, and the TX-RZ50 is rated 120 W per channel. Cinema reference level, 105 dB peaks, takes about 32 W.

Does the Klipsch R-605FA work with the Onkyo TX-RZ50?

Verdict

Yes

The R-605FA is 8 Ω, and the TX-RZ50 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

120 W

More than you need. About 4 W gives 95 dB peaks at 2 m

How to connect them

Connect the R-605FA speakers to the TX-RZ50's front terminals with speaker wire.
Run Dirac Live with its microphone at your seat.

Plan the R-605FA and TX-RZ50 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-605FA

Impedance: 8 Ω
Sensitivity: 96 dB (2.83 V, 1 m) in-room
MSRP: $800 each (MSRP, September 2026)

All R-605FA specs and pairings

Onkyo TX-RZ50

Amplifier channels: 9
Height formats: Dolby Atmos, DTS:X
Lowest speaker impedance: 4 Ω
MSRP: $1,599 each (MSRP, September 2026)

All TX-RZ50 specs and pairings

Questions about the R-605FA and TX-RZ50

Does the R-605FA work with the TX-RZ50?: Yes. The R-605FA is 8 Ω, and the TX-RZ50 is rated for speakers down to 4 Ω, so it drives them as is.
Will the TX-RZ50 damage the R-605FA?: No. The TX-RZ50 is rated for the R-605FA's 8 Ω load as it comes.
What impedance setting should I use for the R-605FA on the TX-RZ50?: None: the R-605FA is 8 Ω, and the TX-RZ50 needs no change for it.
Is the TX-RZ50 powerful enough for the R-605FA?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 4 W per speaker, and the TX-RZ50 is rated 120 W per channel. Cinema reference level, 105 dB peaks, takes about 32 W.

Swap one of them

Klipsch R-605FA + Emotiva XPA-2 Gen3Works
Klipsch R-605FA + Denon AVR-X3800HWorks
Klipsch RP-8000F II + Onkyo TX-RZ50Works
KEF Q6 Meta + Onkyo TX-RZ50Needs a setting change

References

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

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