Will the Cinema 70s damage the RP-600M II?

No. The Cinema 70s is rated for the RP-600M II's 8 Ω load as it comes.

What impedance setting should I use for the RP-600M II on the Cinema 70s?

None: the RP-600M II is 8 Ω, and the Cinema 70s needs no change for it.

Is the Cinema 70s powerful enough for the RP-600M II?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 5 W per speaker, and the Cinema 70s is rated 50 W per channel. Cinema reference level, 105 dB peaks, takes about 45 W.

Does the Klipsch RP-600M II work with the Marantz Cinema 70s?

Verdict

Yes

The RP-600M II is 8 Ω, and the Cinema 70s 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

50 W

More than you need. About 5 W gives 95 dB peaks at 2 m

How to connect them

Connect the RP-600M II speakers to the Cinema 70s's front terminals with speaker wire.
Run Audyssey MultEQ XT with its microphone at your seat.

Plan the RP-600M II and Cinema 70s 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 RP-600M II

Impedance: 8 Ω
Sensitivity: 94.5 dB (2.83 V, 1 m) in-room
MSRP: $700 a pair (MSRP, September 2026)

All RP-600M II specs and pairings

Marantz Cinema 70s

Amplifier channels: 7
Height formats: Dolby Atmos, DTS:X
Lowest speaker impedance: 4 Ω
MSRP: $1,300 each (MSRP, September 2026)

All Cinema 70s specs and pairings

Questions about the RP-600M II and Cinema 70s

Does the RP-600M II work with the Cinema 70s?: Yes. The RP-600M II is 8 Ω, and the Cinema 70s is rated for speakers down to 4 Ω, so it drives them as is.
Will the Cinema 70s damage the RP-600M II?: No. The Cinema 70s is rated for the RP-600M II's 8 Ω load as it comes.
What impedance setting should I use for the RP-600M II on the Cinema 70s?: None: the RP-600M II is 8 Ω, and the Cinema 70s needs no change for it.
Is the Cinema 70s powerful enough for the RP-600M II?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 5 W per speaker, and the Cinema 70s is rated 50 W per channel. Cinema reference level, 105 dB peaks, takes about 45 W.

Swap one of them

References

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

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