Short answer: the Klipsch RP-600M II. It ranks #123 of 222 bookshelf speakers by sound quality (rated 3.7/5) at $449.99 and is still sold new; the Tannoy Revolution XT 6 ranks #204 (rated 2.6/5) and is discontinued, so it is only an option used.
The Klipsch RP-600M II is the more accurate pick. Bookshelf speakers with a large horn tweeter, wide soundstage, high efficiency and bi-amp ready terminals. Its measured preference score, a predictor of how neutral it sounds, is 5.64 against 2.15 for the Tannoy Revolution XT 6. The catch: On-axis, the treble runs notably hot (even hotter than the original Klipsch RP-600M in some respects) and needs about 20° of toe-out or the grille installed to sound balanced.
The case for the Tannoy Revolution XT 6: A discontinued Tannoy bookshelf speaker with a dual concentric driver for consistent off axis sound and a stylish built in port base. The tradeoff: CEA2034 spinorama shows significant on-axis dips and rising amplitude above 3kHz, and distortion measurements are the headline problem: 4-5% distortion at 96dB SPL in the most sensitive part of the audible band, far higher than the Revel M106 comparison unit at the same level.
Buy the Klipsch RP-600M II. It is rated higher for sound quality; the Tannoy Revolution XT 6 is no longer sold new.
Looking for alternatives? See the complete Passive Home rankings.
Bookshelf speakers with a large horn tweeter, wide soundstage, high efficiency and bi-amp ready terminals.
A discontinued Tannoy bookshelf speaker with a dual concentric driver for consistent off axis sound and a stylish built in port base.
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Specifications Side By Side
| Klipsch RP-600M II | Tannoy Revolution XT 6 | |
|---|---|---|
| Price | $449.99 per pair | $1,100 per pair Discontinued |
| Ranked | #123 of 222 in Large Size Bookshelf Speakers | #204 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) | 46.8Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) | 71.8Hz (measured, Audio Science Review) |
| Dimensions | 15.7”H x 8”W x 12.5”D (398.8 x 203.2 x 317.5 mm) | 15.8H x 8.7W x 11.9D in |
| Impedance | 8 ohms nominal (3.5 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 8 ohms nominal |
| Sensitivity | 86dB (measured, Erin’s Audio Corner) | 86.5dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn | 6” dual-concentric multifiber-cone woofer with coaxial 1” PEI dome tweeter |
| Weight | 13 lbs (5.9 kg) each | 16.5 lbs (7.5 kg) each |
| Woofer Cabinet | ported | ported, bottom-firing |
| Spinorama Preference Score | 5.64 | 2.15 |
| Spinorama Preference Score with Perfect Sub | 7.77 | 4.67 |
| DIY Kit | No | No |
| Power Handling | - | 25-120W recommended, 240W peak |
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