Short answer: the Emotiva Airmotiv XB2. It ranks #48 of 222 bookshelf speakers by sound quality, rated 4.2/5, at $549. The XTZ Spirit 4 ranks #159, rated 3.4/5, at $477, $72 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Emotiva Airmotiv XB2 is the more accurate pick. A great value bookshelf speaker with neutral sound, an AMT ribbon tweeter, and decent bass for its size. Its measured preference score, a predictor of how neutral it sounds, is 5.65 against 4.18 for the XTZ Spirit 4. Watch for: Slight recessed upper-midrange around 2kHz from the tweeter-to-woofer handoff.
Why pick the XTZ Spirit 4: Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass. Watch for: The third-party measurement is low confidence.
Buy the Emotiva Airmotiv XB2. It is rated higher for sound quality, and the $72 you would save on the XTZ Spirit 4 does not close the gap.
Still deciding? The full Passive Home rankings cover every ranked option.
A great value bookshelf speaker with neutral sound, an AMT ribbon tweeter, and decent bass for its size.
Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Emotiva Airmotiv XB2 | XTZ Spirit 4 | |
|---|---|---|
| Price | $549 per pair | $477 per pair |
| Ranked | #48 of 222 in Large Size Bookshelf Speakers | #159 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | about 40.0Hz (measured, Spinorama data) |
| Bass Extension (-3dB) | 62Hz (measured, Erin’s Audio Corner) | 42Hz (manufacturer specified) |
| Dimensions | 12.8” x 8.5” x 11.5” (325 x 216 x 292 mm) | 13.8H x 7.5W x 10.6D in |
| Impedance | 4 ohms nominal (safe with 8-ohm rated amps) | 4 ohms |
| Sensitivity | 86dB (2.83V/1m, Manufacturer specified) | 86dB |
| Drivers | 1x 6” woven cone woofer, 1x 25x32mm AMT folded ribbon tweeter | 1” dome tweeter, 6.5” woofer |
| Weight | 18.1 lbs (8.2 kg) | 17.9 lbs (8.1 kg) each |
| Woofer Cabinet | Bass reflex, rear ported | - |
| Frequency Response | 48Hz - 27kHz (+3/-3dB, Manufacturer specified) | - |
| Crossover Frequency | 2.6kHz | - |
| Power Handling | 125W continuous, 200W peak | - |
| Spinorama Preference Score | 5.65 | 4.18 |
| Spinorama Preference Score with Perfect Sub | 7.93 | 6.30 |
| DIY Kit | No | No |
| Enclosure | - | 2-way passive, rear-ported |
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