Will the Cinema 70s damage the Motion 35XTi?

No. The Cinema 70s is rated for the Motion 35XTi's 4 Ω load as it comes.

What impedance setting should I use for the Motion 35XTi on the Cinema 70s?

None: the Motion 35XTi is 4 Ω, and the Cinema 70s needs no change for it.

Is the Cinema 70s powerful enough for the Motion 35XTi?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 16 W per speaker, and the Cinema 70s is rated 50 W per channel. Cinema reference level, 105 dB peaks, takes about 160 W.

Does the MartinLogan Motion 35XTi work with the Marantz Cinema 70s?

Verdict

Yes

The Motion 35XTi is 4 Ω, and the Cinema 70s 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

50 W

More than you need. About 16 W gives 95 dB peaks at 2 m

How to connect them

Connect the Motion 35XTi speakers to the Cinema 70s's front terminals with speaker wire.
Run Audyssey MultEQ XT with its microphone at your seat.

Plan the Motion 35XTi 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

MartinLogan Motion 35XTi

Impedance: 4 Ω
Sensitivity: 92 dB (2.83 V, 1 m)
Recommended amplifier power: 20–250 W
MSRP: $750 each (MSRP, September 2026)

All Motion 35XTi 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 Motion 35XTi and Cinema 70s

Does the Motion 35XTi work with the Cinema 70s?: Yes. The Motion 35XTi is 4 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 Motion 35XTi?: No. The Cinema 70s is rated for the Motion 35XTi's 4 Ω load as it comes.
What impedance setting should I use for the Motion 35XTi on the Cinema 70s?: None: the Motion 35XTi is 4 Ω, and the Cinema 70s needs no change for it.
Is the Cinema 70s powerful enough for the Motion 35XTi?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 16 W per speaker, and the Cinema 70s is rated 50 W per channel. Cinema reference level, 105 dB peaks, takes about 160 W.

Swap one of them

MartinLogan Motion 35XTi + Emotiva XPA-2 Gen3Works
MartinLogan Motion 35XTi + Denon AVR-X3800HNeeds a setting change
Klipsch RP-504C II + Marantz Cinema 70sWorks
KEF Q350 + Marantz Cinema 70sWorks

References

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

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