What crossover setting should I use with the L12?

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 L12 to the TX-NR6100?

Run a subwoofer cable from the TX-NR6100's sub out 1 to the L12's line-level input.

Does the Rythmik Audio L12 work with the Onkyo TX-NR6100?

Verdict

Yes

The L12 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

On the TX-NR6100

Amplifier

300 W

Built into the L12

How to connect them

Run a subwoofer cable from the TX-NR6100's sub out 1 to the L12's line-level input.
Set speakers to Small with an 80 Hz crossover.
Run AccuEQ with its microphone at your seat.

Plan the L12 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

Rythmik Audio L12

Amplifier: 300 W
Low end: 12 Hz
Inputs: Line
MSRP: $791 each (MSRP, September 2026)

All L12 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 L12 and TX-NR6100

Does the L12 connect to the TX-NR6100?: Yes. The L12 has a line-level input, and the TX-NR6100's 2 subwoofer outputs feed it.
What crossover setting should I use with the L12?: 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 L12 to the TX-NR6100?: Run a subwoofer cable from the TX-NR6100's sub out 1 to the L12's line-level input.

Swap one of them

Rythmik Audio L12 + Yamaha RX-V6AConnects
Rythmik Audio L12 + Denon AVR-X1800HConnects
SVS PB-1000 Pro + Onkyo TX-NR6100Connects
Monoprice M-12 V2 + Onkyo TX-NR6100Connects

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.