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Does the Rythmik Audio L12 work with the Onkyo TX-RZ30?

Verdict
Yes

The L12 has a line-level input, and the TX-RZ30's 2 subwoofer outputs feed it.

Connection
Line-level
Sub out to its LFE input
Sub outputs
2
On the TX-RZ30
Amplifier
300 W
Built into the L12

How to connect them

  1. Run a subwoofer cable from the TX-RZ30's sub out 1 to the L12's line-level input.
  2. Set speakers to Small with an 80 Hz crossover.
  3. Run Dirac Live with its microphone at your seat.

Plan the L12 and TX-RZ30 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-RZ30

Amplifier channels
9
Subwoofer outputs
2
MSRP
$1,000 each (MSRP, September 2025)
All TX-RZ30 specs and pairings

Questions about the L12 and TX-RZ30

Does the L12 connect to the TX-RZ30?
Yes. The L12 has a line-level input, and the TX-RZ30'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-RZ30?
Run a subwoofer cable from the TX-RZ30's sub out 1 to the L12's line-level input.

Swap one of them

References

  1. Rythmik Audio L12: Manufacturer product page, rythmikaudio.com, retrieved September 15, 2026
  2. Rythmik Audio L12: Retailer listing, ascendacoustics.com, retrieved September 15, 2026
  3. Onkyo TX-RZ30: Owner's manual, assets.onkyo-av.com, retrieved September 15, 2026
  4. Onkyo TX-RZ30: 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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