HyFa Klipsch RP-600M II Review: Horn-Loaded Efficiency
Klipsch has championed horn-loaded speakers since 1946. The RP-600M II is their mid-range bookshelf offering, combining a Tractrix horn-loaded tweeter with a 6.5-inch woofer at around $600 per pair. After testing in a 12x15-foot room with both tube and solid-state amplification, here is the full assessment.
Klipsch RP-600M II Review: Horn-Loaded Efficiency
Build and Design
The RP-600M II is a substantial bookshelf speaker at 15.7 x 8.0 x 10.75 inches and 15.5 pounds each. The cabinet is available in ebony or walnut vinyl veneer with a removable magnetic grille. The copper-colored Cerametallic woofer is the visual signature, giving the speaker an industrial aesthetic that you either love or find polarizing.
The rear-ported Tractrix port is flared like a horn, which Klipsch claims reduces turbulence and port noise. In testing, the port does run quietly at moderate levels, though it produces some chuffing when the woofer is pushed near its limits.
Binding posts are high-quality five-way type that accept banana plugs, spade connectors, and bare wire. Internal wiring is upgraded from the original RP-600M.
Driver Configuration
| Driver | Size | Type |
|---|---|---|
| Woofer | 6.5” | Cerametallic copper-spun aluminum |
| Tweeter | 1” | Titanium LTS vented, Tractrix horn loaded |
The Tractrix horn is not just cosmetic. The square horn loads the 1-inch titanium tweeter, controlling directivity and increasing efficiency. This means the tweeter projects sound more directly at the listener with less wall reflection, and the speaker needs less amplifier power.
Sound Quality
The RP-600M II has a lively, dynamic sound that favors excitement over strict accuracy. It is not neutral in the way the KEF LS50 Meta is neutral. It is engaging, forward, and unapologetically fun.
Bass from the 6.5-inch Cerametallic woofer extends to approximately 42 Hz (-3 dB), which is excellent for a bookshelf speaker. Mid-bass punch is a defining characteristic. Rock kick drums, bass guitar, and the left hand of piano have real weight. The bass is slightly emphasized above neutral, adding warmth and body.
Midrange is clear and forward. The horn-loaded tweeter creates a presence region lift that pushes vocals and lead instruments toward the listener. This is exciting with well-recorded music but can become aggressive with bright recordings. The midrange has a slight coloration from the horn, adding a “live” quality that many listeners enjoy.
Treble from the titanium tweeter is extended and detailed with a metallic character that divides opinion. Some hear it as crisp and alive. Others hear it as hard or fatiguing on certain material. Extended listening with bright recordings can be tiring. Acoustic and vocal music sounds excellent.
Dynamics are where the RP-600M II truly excels. The high 96 dB sensitivity means the speakers react instantly to transients. Drum hits have explosive impact. Dynamic swings in orchestral music are rendered with authority that most bookshelf speakers cannot match. This is the horn advantage.
| Specification | Value |
|---|---|
| Sensitivity | 96 dB (2.83V/1m) |
| Impedance | 8 ohms |
| Frequency Response | 42 Hz - 25 kHz (±3 dB) |
| Crossover | 1.75 kHz |
| Dimensions | 15.7 x 8.0 x 10.75 in |
| Weight | 15.5 lbs each |
Amplification
The 96 dB sensitivity and 8-ohm impedance make the RP-600M II an extraordinarily easy speaker to drive. A 10-watt tube amplifier will fill a moderate room. A budget receiver works perfectly. This efficiency is a significant practical advantage and one of the best reasons to choose Klipsch over less sensitive speakers.
For tube amplifier enthusiasts, the RP-600M II is an ideal match. The warmth of tube amplification complements the speaker’s forward character, rounding the treble slightly while preserving the dynamic impact.
Room Placement
The rear port means the RP-600M II needs at least 8-12 inches from the back wall for best bass performance. Closer placement increases bass emphasis, which can become boomy. The Tractrix horn’s directivity means toe-in matters. Start with the speakers aimed directly at the listening position and adjust to taste.
Comparisons
Against the KEF LS50 Meta at a similar price, the RP-600M II is louder, more dynamic, and more forward. The LS50 Meta is more neutral, images more precisely, and has a wider sweet spot. The RP-600M II is the better choice for rock, electronic, and live music. The LS50 Meta is better for classical, jazz, and critical listening.
Who Should Buy the RP-600M II
Anyone who wants dynamic, exciting sound from a bookshelf speaker with maximum amplifier flexibility should consider the RP-600M II. The 96 dB sensitivity opens up tube amplifiers and budget receivers as viable partners. The forward, engaging sound suits listeners who want to feel the music rather than analyze it.
Buy if: You want dynamic, exciting sound, you use low-powered amplification, or you listen primarily to rock and live music.
Skip if: You prefer neutral accuracy, bright recordings are a large part of your library, or you need wall-placement flexibility.
Key Takeaways
- 96 dB sensitivity makes this one of the most efficient bookshelf speakers available
- Dynamic impact and transient response exceed most competitors at any price
- Forward, energetic tuning suits rock, electronic, and live music
- Titanium tweeter can be bright with certain recordings
- Rear-ported design requires space behind the speaker for best performance
Next Steps
To understand horn speaker technology in depth, read our [INTERNAL: horn-speakers-explained] guide. For a neutral alternative comparison, see our [INTERNAL: kef-ls50-meta-review].