Short answer: the SVS Prime Bookshelf for better sound quality, the Emotiva Airmotiv B2+ for the lower price. The SVS Prime Bookshelf ranks #58 of 84 bookshelf speakers at $699. The Emotiva Airmotiv B2+ ranks #66 at $449, $250 cheaper.
What the SVS Prime Bookshelf offers: Reasonable sensitivity for the price at about 87dB, and the 6.5” woofer sits in its own dedicated sealed sub-compartment inside the cabinet for cleaner midrange/bass separation. Watch for: A scooped mid-range paired with a boosted upper mid-range creates an audibly uneven tonal balance, and there’s an additional dip in the treble around 4-5kHz that reads as slightly tinny relative to the recessed mid-range.
What the Emotiva Airmotiv B2+ offers: Erin measured a useful 86dB average sensitivity and strong midbass punch around 120Hz. Watch for: The replacement B2+ did not deliver the neutral upgrade Erin expected.
Buy the SVS Prime Bookshelf if sound quality matters more than the price. Buy the Emotiva Airmotiv B2+ if the price matters more than sound quality.
If sound quality matters at all to you, skip the Emotiva Airmotiv B2+. It ranks near the bottom of the 84 bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| SVS Prime Bookshelf | Emotiva Airmotiv B2+ | |
|---|---|---|
| Price | $699.00 | $449.00 |
| Ranked | #58 of 84 in Large Size Bookshelf Speakers | #66 of 84 in Large Size Bookshelf Speakers |
| Drivers | 6.5" polypropylene cone woofer with aluminum shorting ring (sealed sub-compartment), 1" aluminum dome tweeter | 6.5" woven-fiber woofer, 32 x 25mm folded-ribbon tweeter |
| Weight | 15.5 lbs (15.5 lbs / 7.03 kg) each | - |
| Impedance | 8 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms nominal (manufacturer specified) |
| Sensitivity | 87dB (measured average, Erin’s Audio Corner) | 86dB (measured average, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 72Hz (measured, Erin’s Audio Corner) | 66Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 49Hz (measured, Erin’s Audio Corner) | 43Hz (measured, Erin’s Audio Corner) |
| Frequency Response | 48Hz - 25kHz ±3dB (manufacturer specified) | - |
| Woofer Cabinet | - | ported, rear |
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The Two Speakers In Full
SVS Prime Bookshelf: $699.00 Amazon
Pros: Reasonable sensitivity for the price at about 87dB, and the 6.5” woofer sits in its own dedicated sealed sub-compartment inside the cabinet for cleaner midrange/bass separation. Overall response stays within about ±3dB from 80Hz-16kHz, which the reviewer calls reasonable for the price point. Wide, consistent horizontal radiation. Toeing the speakers 30 degrees off-axis smooths the in-room response noticeably if the on-axis tonal balance isn’t to your taste.
Cons: A scooped mid-range paired with a boosted upper mid-range creates an audibly uneven tonal balance, and there’s an additional dip in the treble around 4-5kHz that reads as slightly tinny relative to the recessed mid-range. Measured minimum impedance dips below 4 ohms (EPDR even lower), so an 8-ohm-only amplifier or AVR may struggle - a 4-ohm-stable amp or separate amplification is recommended. Bass extension is modest (F3 72Hz, F10 49Hz measured) - SVS clearly designed this to be paired with one of their subwoofers rather than to stand fully alone. Compared directly against its pricier sibling, the SVS Ultra Bookshelf, in the same review, the reviewer found the Ultra noticeably more tonally neutral.
Full SVS Prime Bookshelf review and specifications →
| Bass Extension (-10dB) | 49Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 72Hz (measured, Erin's Audio Corner) |
| Drivers | 6.5" polypropylene cone woofer with aluminum shorting ring (sealed sub-compartment), 1" aluminum dome tweeter |
| Frequency Response | 48Hz - 25kHz ±3dB (manufacturer specified) |
| Impedance | 8 ohms nominal, 3.9 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 87dB (measured average, Erin's Audio Corner) |
| Weight | 15.5 lbs (15.5 lbs / 7.03 kg) each |
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Emotiva Airmotiv B2+: $449.00
Pros: Erin measured a useful 86dB average sensitivity and strong midbass punch around 120Hz. The folded-ribbon tweeter provides very broad upper-treble radiation, and the speaker can create a spacious presentation when positioned carefully. Response and directivity remain reasonably orderly below the roughly 2kHz crossover region. The 6.5-inch woofer offers more output capability than compact 5-inch competitors, while F3/F10 of 66/43Hz leave adequate overlap for a conventional 80Hz subwoofer crossover. Horizontal directivity data makes the broad baffle-step trend amenable to partial EQ below the crossover.
Cons: The replacement B2+ did not deliver the neutral upgrade Erin expected. A baffle-step loss around 500Hz depresses the lower midrange while the AMT’s much wider radiation above crossover injects excess room energy, yielding a bright, forward balance and false impression of cymbal detail. The directivity discontinuity near 2kHz cannot be completely equalized. Erin measured F3 at 66Hz and F10 at 43Hz, so meaningful kick-drum fundamentals and low bass still need a subwoofer. Vertical listening tolerance is roughly +/-10 degrees, with best results between the top of the woofer and tweeter axes. Broad lateral treble energy may require careful toe-out and sidewall absorption. Despite a large cabinet, it offers limited deep-bass advantage and was not Erin’s hoped-for successor to the more linear B1+.
Full Emotiva Airmotiv B2+ review and specifications →
| Bass Extension (-10dB) | 43Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 66Hz (measured, Erin's Audio Corner) |
| Drivers | 6.5" woven-fiber woofer, 32 x 25mm folded-ribbon tweeter |
| Impedance | 4 ohms nominal (manufacturer specified) |
| Sensitivity | 86dB (measured average, Erin's Audio Corner) |
| Woofer Cabinet | ported, rear |
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- Head-to-Head Comparisons