The Michael Phelps Legend Series is Master Spas' flagship hot tub line: the largest feature set, the most jets, and the widest range of sizes in the catalog. If you're comparing LSX models and trying to figure out which number means what, here's a straightforward walkthrough using the real specs for each one.
The full lineup, side by side
| Model | Seats | Dimensions | Jets | Water Capacity |
|---|---|---|---|---|
| LSX 30 | 5 | 94" x 94" x 38" | 63 + 2 Master Blasters® | 345 gal |
| LSX 700 | 5 | 84" x 84" x 38" | 62 + 2 Master Blasters® | 305 gal |
| LSX 800 | 6 | 94" x 94" x 38" | 70 + 2 Master Blasters® | 410 gal |
| LSX 850 | 7 | 94" x 94" x 38" | 59 + 2 Master Blasters® | 395 gal |
| LSX 900 | 8 | 108" x 94" x 38" | 72 + 2 Master Blasters® | 490 gal |
How to think about the lineup
Footprint first. Three of the five models (the LSX 800, 850, and 900's smaller siblings) share the same 94" x 94" base footprint, just with different seat counts and jet layouts. Only the LSX 700 (smaller, 84" x 84") and LSX 900 (larger, 108" x 94") break from that footprint. If your patio has a fixed size limit, that narrows things down fast.
Then seat count. Within the shared 94" x 94" footprint, the LSX 800 (6 seats), LSX 850 (7 seats), and LSX 900 (8 seats, in a longer shell) give you a range without changing your available space much. The tradeoff is jets-per-person rather than room.
Feature sets vary by model. Not every LSX model carries the identical feature list. The Xtreme Lounger seat isn't on every model in the line, and premium option availability (like QuietFlo) differs too. Each model's own page lists exactly what's standard and what's a premium option for that spa, so it's worth checking the individual page rather than assuming the whole series is uniform.
Which one is actually right for you
- Smaller households or tighter patios: the LSX 700 gives you the full Legend Series feature set in the smallest footprint in the line.
- A step up without changing your footprint: the LSX 30 shares the LSX 800/850/900 footprint with 5-seat capacity and the highest jet count relative to seat count in that group.
- Entertaining a full group regularly: the LSX 850 or LSX 900 — the 900 especially, since it's the only model in the series built with a longer shell specifically to add capacity.
Specs are a starting point, not the whole decision. Seat depth, jet placement, and how the lounger actually feels are things you can only judge in person. All five Legend Series models are worth sitting in side by side, and any of our California showrooms is set up to let you do exactly that.