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Does the Klipsch SPL-120 work with the Onkyo TX-NR6100?

Verdict
Yes

The SPL-120 has a line-level input, and the TX-NR6100's 2 subwoofer outputs feed it.

Connection
Line-level
Sub out to its LFE input
Sub outputs
2
On the TX-NR6100
Amplifier
300 W
Built into the SPL-120

How to connect them

  1. Run a subwoofer cable from the TX-NR6100's sub out 1 to the SPL-120's line-level input.
  2. Set speakers to Small with an 80 Hz crossover.
  3. Run AccuEQ with its microphone at your seat.

Plan the SPL-120 and TX-NR6100 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

Klipsch SPL-120

Amplifier
300 W
Low end
24 Hz
Inputs
Line
MSRP
$600 each (MSRP, September 2026)
All SPL-120 specs and pairings

Onkyo TX-NR6100

Amplifier channels
7
Subwoofer outputs
2
MSRP
$799 each (MSRP, May 2025)
All TX-NR6100 specs and pairings

Questions about the SPL-120 and TX-NR6100

Does the SPL-120 connect to the TX-NR6100?
Yes. The SPL-120 has a line-level input, and the TX-NR6100'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 TX-NR6100?
Run a subwoofer cable from the TX-NR6100's sub out 1 to the SPL-120's line-level input.

Swap one of them

References

  1. Klipsch SPL-120: Spec sheet, assets.klipsch.com, retrieved September 15, 2026
  2. Klipsch SPL-120: Retailer listing, bhphotovideo.com, retrieved September 15, 2026
  3. Onkyo TX-NR6100: Spec sheet, assets.onkyo-av.com, retrieved September 15, 2026
  4. Onkyo TX-NR6100: Retailer listing, web.archive.org, retrieved September 15, 2026

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

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