Klipsch R-51M Bookshelf Speakers — New, Sealed
$425.00
The Klipsch R-51M bookshelf speakers are brand new and factory sealed — featuring the iconic 90×90° Tractrix horn, 1″ LTS aluminum tweeter, and 5.25″ copper-spun IMG woofer. With class-leading 93 dB sensitivity and bass down to 62 Hz, these are the most dynamic speakers available at this price point. Backed by Radique’s 90-day warranty and Perpetual Trade-Back Program.
2 in stock
🔊 Klipsch R-51M Bookshelf Speakers — New, Factory Sealed
The Klipsch R-51M bookshelf speakers deliver the signature Tractrix horn-loaded Reference Series sound in a brand new, factory-sealed package — with class-leading 93 dB sensitivity that outperforms every competitor in this price range. If you’ve been waiting to get into the Klipsch Reference lineup without compromise, this is your opportunity.
🎺 Klipsch R-51M Bookshelf Speakers — Tractrix Horn-Loaded Performance
At the heart of the R-51M is Klipsch’s proprietary 90×90 degree Tractrix horn mated to a 1-inch aluminum diaphragm LTS (Linear Travel Suspension) compression tweeter. The LTS design keeps the voice coil in the gap at all times, minimizing distortion, while the Tractrix horn focuses high-frequency energy precisely toward the listener for exceptional detail, dynamics, and that unmistakable Klipsch front-row energy. CNET praised the R-51M’s “exciting rock and roll sound” and excellent build quality — and audiophile communities consistently highlight its wide, deep soundstage that brings recordings to life at any volume.
🏺 Copper-Spun IMG Woofer — Articulate, Efficient, Distinctive
The 5.25-inch copper-spun IMG (Injection Molded Graphite) woofer delivers articulate midrange and well-defined bass extending down to 62 Hz. The rear-firing Tractrix port applies the same horn geometry to the bass reflex design for maximum efficiency and reduced port turbulence — a detail most manufacturers skip entirely.
🎨 Build Quality & Aesthetics
Low-profile magnetic grilles with exposed copper-toned fasteners for a polished, modern look
MDF cabinet wrapped in black textured wood grain vinyl with clean, contemporary lines
Rear-panel binding posts accept bare wire, pins, spades, or banana plugs
Note: As these are factory-sealed units, product photos in this listing are stock images
📐 Specifications
| Feature | Spec |
|---|---|
| Type | 2-way bass reflex bookshelf (pair) |
| Tweeter | 1″ aluminum LTS compression driver, 90×90° Tractrix horn |
| Woofer | 5.25″ copper-spun IMG cone, rubber surround |
| Frequency Response | 62 Hz – 21 kHz (±3 dB) |
| Sensitivity | 93 dB (2.83V/1m) |
| Impedance | 8 ohms |
| Power Handling | 85W RMS / 340W peak |
| Connections | Binding posts |
| Port | Rear-firing Tractrix port |
| Finish | Black textured wood grain vinyl |
| Dimensions (each) | 7″ × 13.3″ × 8.5″ (178 × 338 × 215 mm) |
| Weight (each) | 11 lbs (5 kg) |
✅ Buy With Confidence — The Radique Promise
These are brand new, factory-sealed units — backed by Radique’s 90-day warranty and our Perpetual Trade-Back Program. Very limited quantities available.
📞 Questions? Call us at 613-416-9995 or use the Ask a Question button above.
| Weight | 25 lbs |
|---|---|
| Dimensions | 20 × 18 × 14 in |




