These sit in different price classes - Dynaudio Focus 50 costs roughly 2.9x what ELAC Navis ARF-51 does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | A | Dynaudio Focus 50 digs deeper - 22Hz against 43Hz. |
| Built-in power | A | Dynaudio Focus 50 has the bigger amplifier (670W vs 300W RMS). |
| Connections | A | Dynaudio Focus 50 adds Wi-Fi, streaming and digital inputs. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Cabinet | depends | Sealed vs Ported. Sealed is tighter and happier near a wall; ported digs lower but wants space behind it. |
| Expandability | A | Dynaudio Focus 50: a sub output. |
| Price | B | ELAC Navis ARF-51 is cheaper - $3,798 against $11,000, about 65% less; arguably a different class. |
A Dynaudio Focus 50 B ELAC Navis ARF-51
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: Dynaudio Focus 50 measures better, ELAC Navis ARF-51 costs about about 2.9x the price% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 43Hz anyway, which makes the cheaper ELAC Navis ARF-51 much easier to justify. Think about the whole system, not just the speakers: the roughly $7,202 saved by taking the cheaper pair would buy a subwoofer or a better amplifier, and either usually does more for the sound than the difference between these two.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.