Using the R-51M and RP-500M II bookshelf speakers as the like-for-like pair.
Updated 2026
Verdict
The Klipsch Reference R-51M is the better buy for most people: the same horn-loaded sound for less money. Choose the Reference Premiere RP-500M II if you want the refinements, meaning a larger horn, a titanium tweeter, upgraded woofer and furniture-grade finish, and the extra spend does not bother you.
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Planning the sound? Get the whole matched system.
Pick 5.1, 5.1.2, 7.1 or 7.1.4 and a budget, and get timbre-matched speakers, a sub sized to your room and a receiver with enough channels.
under $500 pair
Check Klipsch Reference Premiere RP-500M II Price| Klipsch Reference R-51M | Klipsch Reference Premiere RP-500M II | |
|---|---|---|
| Tweeter | 1-inch aluminum LTS | 1-inch titanium LTS, vented housing |
| Horn | 90 x 90 square Tractrix horn | Larger 90 x 90 silicone composite hybrid Tractrix horn |
| Woofer | 5.25-inch spun-copper IMG | 5.25-inch Cerametallic |
| Port | Rear-firing bass reflex | Tractrix port |
| Finish | Vinyl-style cabinet | Furniture-grade finish, magnetic grille |
| Best for | Budget horn sound | Better looks and refinement |
The table compares the Klipsch Reference R-51M and the Reference Premiere RP-500M II on tweeter, horn, woofer, port and finish; both share the signature horn sound, and the Premiere adds refinement and nicer build.
You want the Klipsch horn sound at the lowest price, you are building a home theater on a budget, or the speakers will sit in a basement or den where the finish matters less.
Check Klipsch Reference R-51M on Amazon
The speakers will be visible in a living room, you like the magnetic grille and furniture-grade finish, or you want the lower distortion Klipsch claims for the titanium tweeter and updated woofer.
Check Klipsch Reference Premiere RP-500M II on Amazon
Skip both if you find horn tweeters bright (look at a dome-tweeter speaker such as the Polk Reserve or SVS Prime instead) or if you want a single-box soundbar setup.
Reference is the entry range, while Reference Premiere is the step up with a titanium tweeter, a larger horn, an updated woofer and nicer finishes. Both use horn-loaded tweeters and share a lively sound.
If appearance and refinement matter to you, yes. If you mainly want Klipsch sound and output for the lowest price, the Reference line is the better value.
No. Klipsch speakers are very efficient, so even an entry-level receiver drives them well. That is a key reason they suit home theater.
In a room with hard surfaces they can sound forward. Carpet, curtains and furniture tame the treble, and a receiver with room correction helps.
Comparison researched from published manufacturer specifications, retailer listings and owner reviews. We have not tested these units side by side. Specifications marked approximate should be confirmed on the manufacturer page before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.