Short answer: the KEF R3 Meta. It ranks #10 of 222 bookshelf speakers by sound quality, rated 4.6/5, at $2,499.99; the JBL 708i ranks #122, rated 3.7/5, and costs $2,998, so there is not much of a tradeoff to weigh.
The KEF R3 Meta is the more accurate choice. A three way bookshelf speaker with KEF’s coaxial driver, superb accuracy that holds across the room, and bass that reaches deep for its size. Its measured preference score, a predictor of how neutral it sounds, is 6.10 against 4.33 for the JBL 708i. Watch for: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide: only toeing the speaker out about 10° tames it.
The JBL 708i is the deeper-bass option. A high-output 8 inch professional monitor with a compression driver and waveguide, designed to run bi-amplified with JBL processing. Its bass reaches about 43.9Hz before falling 3dB, against 76Hz for the KEF R3 Meta. The catch: This is not self-powered: achieving the measured active-mode response requires compatible external amplification and JBL processing, adding substantial cost and complexity.
Buy the KEF R3 Meta. It is rated higher for sound quality than the JBL 708i and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Passive Home rankings.
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Specifications Side By Side
| KEF R3 Meta | JBL 708i | |
|---|---|---|
| Price | $2,499.99 per pair | $2,998 per pair |
| Ranked | #10 of 222 in Large Size Bookshelf Speakers | #122 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | about 35.6Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | 43.9Hz (measured active-mode, spinorama.org) |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) | 17.2H x 9.8W x 11.5D in |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms nominal |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter | 1” compression driver, 8” woofer |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) | 90dB (1W/1m) |
| Weight | 27.3 lbs (12.4 kg) each | 25.4 lbs (11.5 kg) each |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 6.10 | 4.33 |
| Spinorama Preference Score with Perfect Sub | 7.91 | 6.21 |
| DIY Kit | No | No |
| Enclosure | - | 2-way passive/bi-amplified, dual front ports |
| Maximum SPL | - | 108dB continuous, 114dB peak |
| Amplifier Power | - | External Crown DCI amplifier and JBL DSP required for measured active configuration |
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