# RSL Speedwoofer 10S MKII vs KEF KC62: specs and price compared

A sourced, side-by-side comparison of the RSL Speedwoofer 10S MKII (Rogersound Labs) and KEF KC62 (KEF) among subwoofers. RSL Speedwoofer 10S MKII is the cheaper of the two at $499.

## Side by side

| Spec | RSL Speedwoofer 10S MKII | KEF KC62 |
| --- | --- | --- |
| US price | $499 | $1699.99 |
| Brand | Rogersound Labs | KEF |
| Released | 2022 | — |
| Driver size (in) | 10 | 6.5 |
| Amplifier power rms (W) | 400 | 1000 |
| Amplifier power peak (W) | 1020 | — |
| Enclosure type | ported | — |
| Frequency response (Hz) | 22-200 Hz ±3 dB | 11 to 200 |
| Amplifier class | class-d | class-d |
| Driver orientation | front-firing | — |
| Room correction | No | No |
| Wireless input | Yes | Yes |
| Dimensions (in) | 15 1/2 x 15 x 15 3/4 | 9.7 x 10.1 x 9.8 |
| Weight (lb) | 40.6 | 30.9 |

## Key differences

- Driver size (in): RSL Speedwoofer 10S MKII 10 vs KEF KC62 6.5
- Amplifier power rms (W): RSL Speedwoofer 10S MKII 400 vs KEF KC62 1000
- Frequency response (Hz): RSL Speedwoofer 10S MKII 22-200 Hz ±3 dB vs KEF KC62 11 to 200
- Dimensions (in): RSL Speedwoofer 10S MKII 15 1/2 x 15 x 15 3/4 vs KEF KC62 9.7 x 10.1 x 9.8
- Weight (lb): RSL Speedwoofer 10S MKII 40.6 vs KEF KC62 30.9

## What reviewers say

**KEF KC62** — Only one whitelisted tester—What Hi-Fi, using Newport Test Labs—published a hands-on, lab-measured review of the KEF KC62. It rates the compact subwoofer highly for powerful, clean, deep bass and easy setup, but flags limited maximum SPL and fiddly custom speaker-level connectors. (1 sourced review.)

## Sources

- RSL Speedwoofer 10S MKII: https://rslspeakers.com/products/rsl-speedwoofer-10s-mkii?country=US (rslspeakers.com, verified 2026-07-11)
- KEF KC62: https://us.kef.com/products/kc62-subwoofer (us.kef.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/subwoofers/rsl-speedwoofer-10s-mkii-vs-kef-kc62/
Cite: Per The Front Desk Review, RSL Speedwoofer 10S MKII ($499) vs KEF KC62 ($1699.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/subwoofers/rsl-speedwoofer-10s-mkii-vs-kef-kc62/
License: CC BY 4.0.