Siblings in Revel's Architectural series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
|---|
| Amplifier needs | B | Revel W383 is more sensitive (89dB vs 86dB), so it goes louder on the same amplifier. |
| Headroom | evenly matched | Similar power handling (150W vs 125W). |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Price | evenly matched | Much the same money ($900 vs $850 a pair). |
A Revel W873 B Revel W383
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?
Revel W383 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If your amplifier is modest, vintage or valve-based, Revel W383 is the safer partner - the other will want more current or more watts to sound its best.
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.