# Rythmik FV15HP vs REL T/9x: specs and price compared

A sourced, side-by-side comparison of the Rythmik FV15HP (Rythmik Audio) and REL T/9x (REL Acoustics) among subwoofers. REL T/9x is the cheaper of the two at $1699.

## Side by side

| Spec | Rythmik FV15HP | REL T/9x |
| --- | --- | --- |
| US price | $2127 | $1699 |
| Brand | Rythmik Audio | REL Acoustics |
| Driver size (in) | 15 | 10 |
| Amplifier power rms (W) | 600 | 300 |
| Amplifier power peak (W) | — | — |
| Enclosure type | ported | passive-radiator |
| Frequency response (Hz) | 12 to 200 | — |
| Amplifier class | class-h | class-ab |
| Driver orientation | — | front-firing |
| Room correction | No | No |
| Wireless input | No | Yes |
| Dimensions (in) | 24-1/2 x 18-1/4 x 24-1/4 | 13.4 x 14.5 x 15.5 |
| Weight (lb) | — | 45.5 |

## Key differences

- Driver size (in): Rythmik FV15HP 15 vs REL T/9x 10
- Amplifier power rms (W): Rythmik FV15HP 600 vs REL T/9x 300
- Enclosure type: Rythmik FV15HP ported vs REL T/9x passive-radiator
- Amplifier class: Rythmik FV15HP class-h vs REL T/9x class-ab
- Wireless input: Rythmik FV15HP No vs REL T/9x Yes
- Dimensions (in): Rythmik FV15HP 24-1/2 x 18-1/4 x 24-1/4 vs REL T/9x 13.4 x 14.5 x 15.5

## Sources

- Rythmik FV15HP: https://www.rythmikaudio.com/FV15HP_specs.html (rythmikaudio.com, verified 2026-07-11)
- REL T/9x: https://rel.net/products/t-9x (rel.net, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/subwoofers/rythmik-fv15hp-vs-rel-t-9x/
Cite: Per The Front Desk Review, Rythmik FV15HP ($2127) vs REL T/9x ($1699) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/subwoofers/rythmik-fv15hp-vs-rel-t-9x/
License: CC BY 4.0.