Will the AVR-S570BT damage the Monitor XT90?

No. Without Dolby Atmos or DTS:X decoding, the AVR-S570BT simply has no height channel to send to the Monitor XT90.

What impedance setting should I use for the Monitor XT90 on the AVR-S570BT?

None: the Monitor XT90 is 8 Ω, and the AVR-S570BT needs no change for it.

Is the AVR-S570BT powerful enough for the Monitor XT90?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 16 W per speaker, and the AVR-S570BT is rated 70 W per channel. Cinema reference level, 105 dB peaks, takes about 160 W.

Does the Polk Monitor XT90 work with the Denon AVR-S570BT?

Verdict

Not recommended

Denon AVR-S570BT has no Dolby Atmos or DTS:X decoding for height speakers. Choose a receiver with Dolby Atmos.

Speaker load

8 Ω speaker, rated down to 6 Ω

Power

70 W

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

Height decoding

No Dolby Atmos or DTS:X

What works instead

Choose a receiver with Dolby Atmos. These receivers near the AVR-S570BT's price do work with the Monitor XT90.

Plan the Monitor XT90 and AVR-S570BT 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

Polk Monitor XT90

Impedance: 8 Ω
Sensitivity: 89 dB
Recommended amplifier power: 30–100 W
MSRP: $119 a pair (MSRP, September 2026)

All Monitor XT90 specs and pairings

Denon AVR-S570BT

Amplifier channels: 5
Height formats: None
Lowest speaker impedance: 6 Ω
MSRP: $449 each (MSRP, September 2026)

All AVR-S570BT specs and pairings

Questions about the Monitor XT90 and AVR-S570BT

Does the Monitor XT90 work with the AVR-S570BT?: Not recommended. Denon AVR-S570BT has no Dolby Atmos or DTS:X decoding for height speakers. Choose a receiver with Dolby Atmos.
Will the AVR-S570BT damage the Monitor XT90?: No. Without Dolby Atmos or DTS:X decoding, the AVR-S570BT simply has no height channel to send to the Monitor XT90.
What impedance setting should I use for the Monitor XT90 on the AVR-S570BT?: None: the Monitor XT90 is 8 Ω, and the AVR-S570BT needs no change for it.
Is the AVR-S570BT powerful enough for the Monitor XT90?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 16 W per speaker, and the AVR-S570BT is rated 70 W per channel. Cinema reference level, 105 dB peaks, takes about 160 W.

Swap one of them

Klipsch CDT-3650-C II + Denon AVR-S570BTNot recommended
Klipsch CDT-5650-C II + Denon AVR-S570BTNot recommended

References

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

Brand names are trademarks of their owners. Not affiliated with or endorsed by any manufacturer. 3D models are our approximations. Prices are manufacturer list prices (MSRP) as of the month shown. How we earn from buy links: affiliate disclosure.