Does the Klipsch SPL-120 work with the Denon AVR-X1800H?
Verdict
Yes
The SPL-120 has a line-level input, and the AVR-X1800H's 2 subwoofer outputs feed it.
Connection
Line-level
Sub out to its LFE input
Sub outputs
2
On the AVR-X1800H
Amplifier
300 W
Built into the SPL-120
How to connect them
- Run a subwoofer cable from the AVR-X1800H's sub out 1 to the SPL-120's line-level input.
- Set speakers to Small with an 80 Hz crossover.
- Run Audyssey MultEQ XT with its microphone at your seat.
Plan the SPL-120 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.
The specs that decide it
Klipsch SPL-120
- Amplifier
- 300 W
- Low end
- 24 Hz
- Inputs
- Line
- MSRP
- $600 each (MSRP, September 2026)
Denon AVR-X1800H
- Amplifier channels
- 7
- Subwoofer outputs
- 2
- MSRP
- $849 each (MSRP, September 2026)
Questions about the SPL-120 and AVR-X1800H
- Does the SPL-120 connect to the AVR-X1800H?
- Yes. The SPL-120 has a line-level input, and the AVR-X1800H's 2 subwoofer outputs feed it.
- What crossover setting should I use with the SPL-120?
- Set your speakers to Small with an 80 Hz crossover: the standard starting point for a receiver and subwoofer, whichever subwoofer you use.
- How do I connect the SPL-120 to the AVR-X1800H?
- Run a subwoofer cable from the AVR-X1800H's sub out 1 to the SPL-120's line-level input.
Swap one of them
References
- Klipsch SPL-120: Spec sheet, assets.klipsch.com, retrieved September 15, 2026
- Klipsch SPL-120: Retailer listing, bhphotovideo.com, retrieved September 15, 2026
- Denon AVR-X1800H: Spec sheet, denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Manufacturer product page, denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Manufacturer product page, denon.com, retrieved September 15, 2026 (2)
- Denon AVR-X1800H: Owner's manual, manuals.denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Dimensional drawing, manuals.denon.com, retrieved September 15, 2026
Specs verified against the manufacturer's published data. Last checked September 15, 2026.
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