Will the AVR-X1800H damage the Signature Elite ES50?

No. The AVR-X1800H is rated for the Signature Elite ES50's 8 Ω load as it comes.

What impedance setting should I use for the Signature Elite ES50 on the AVR-X1800H?

None: the Signature Elite ES50 is 8 Ω, and the AVR-X1800H needs no change for it.

Is the AVR-X1800H powerful enough for the Signature Elite ES50?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 16 W per speaker, and the AVR-X1800H is rated 80 W per channel. Cinema reference level, 105 dB peaks, takes about 160 W.

Does the Polk Signature Elite ES50 work with the Denon AVR-X1800H?

Verdict

Yes

The Signature Elite ES50 is 8 Ω, and the AVR-X1800H 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

80 W

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

How to connect them

Connect the Signature Elite ES50 speakers to the AVR-X1800H's front terminals with speaker wire.
Run Audyssey MultEQ XT with its microphone at your seat.

Plan the Signature Elite ES50 and AVR-X1800H 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 Signature Elite ES50

Impedance: 8 Ω
Sensitivity: 89 dB
Recommended amplifier power: 20–150 W
MSRP: $374 each (MSRP, September 2026)

All Signature Elite ES50 specs and pairings

Denon AVR-X1800H

Amplifier channels: 7
Height formats: Dolby Atmos, DTS:X
Lowest speaker impedance: 4 Ω
MSRP: $849 each (MSRP, September 2026)

All AVR-X1800H specs and pairings

Questions about the Signature Elite ES50 and AVR-X1800H

Does the Signature Elite ES50 work with the AVR-X1800H?: Yes. The Signature Elite ES50 is 8 Ω, and the AVR-X1800H is rated for speakers down to 4 Ω, so it drives them as is.
Will the AVR-X1800H damage the Signature Elite ES50?: No. The AVR-X1800H is rated for the Signature Elite ES50's 8 Ω load as it comes.
What impedance setting should I use for the Signature Elite ES50 on the AVR-X1800H?: None: the Signature Elite ES50 is 8 Ω, and the AVR-X1800H needs no change for it.
Is the AVR-X1800H powerful enough for the Signature Elite ES50?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 16 W per speaker, and the AVR-X1800H is rated 80 W per channel. Cinema reference level, 105 dB peaks, takes about 160 W.

Swap one of them

References

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

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