Does the Motion AFX work with the RX500A?

Yes, with one setting change. The Motion AFX is 4 Ω: set the receiver to 4 Ω in its speaker setup.

Will the RX500A damage the Motion AFX?

Not once it is set up for it: the RX500A is rated for a 4 Ω speaker with its speaker impedance set to 4 Ω.

Is the RX500A powerful enough for the Motion AFX?

Comfortable. From a seat 2 m away, loud 95 dB movie peaks take about 51 W per speaker, and the RX500A is rated 70 W per channel. Cinema reference level, 105 dB peaks, takes about 504 W.

Does the MartinLogan Motion AFX work with the Yamaha RX500A?

Verdict

Yes, set it to 4 Ω

The Motion AFX is 4 Ω: set the receiver to 4 Ω in its speaker setup.

Speaker load

Set 4 Ω

4 Ω speaker, change it in speaker setup

Power

70 W

Comfortable. About 51 W gives 95 dB peaks at 2 m

Height decoding

Yes

Dolby Atmos and DTS:X

How to connect them

Connect the Motion AFX speakers to the RX500A's height terminals with speaker wire.
In the RX500A's speaker setup, set speaker impedance to -Infinity Ω.
Run Room Correction with its microphone at your seat.

Plan the Motion AFX and RX500A 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 AFX

Impedance: 4 Ω
Sensitivity: 87 dB (2.83 V, 1 m)
Recommended amplifier power: 20–200 W
MSRP: $600 a pair (MSRP, September 2026)

All Motion AFX specs and pairings

Yamaha RX500A

Amplifier channels: 7
Height formats: Dolby Atmos, DTS:X
Lowest speaker impedance: 4 Ω
MSRP: $600 each (MSRP, May 2026)

All RX500A specs and pairings

Questions about the Motion AFX and RX500A

Does the Motion AFX work with the RX500A?: Yes, with one setting change. The Motion AFX is 4 Ω: set the receiver to 4 Ω in its speaker setup.
Will the RX500A damage the Motion AFX?: Not once it is set up for it: the RX500A is rated for a 4 Ω speaker with its speaker impedance set to 4 Ω.
What impedance setting should I use for the Motion AFX on the RX500A?: 4 Ω. Set the receiver to 4 Ω in its speaker setup.
Is the RX500A powerful enough for the Motion AFX?: Comfortable. From a seat 2 m away, loud 95 dB movie peaks take about 51 W per speaker, and the RX500A is rated 70 W per channel. Cinema reference level, 105 dB peaks, takes about 504 W.

Swap one of them

MartinLogan Motion AFX + Denon AVR-S670HNot recommended
MartinLogan Motion AFX + Denon AVR-X1700HNeeds a setting change
Klipsch RP-500SA II + Yamaha RX500AWorks
Klipsch RP-500M II + Yamaha RX500AWorks

References

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

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