Short answer: the JBL Stage 250B. It ranks #97 of 179 bookshelf speakers by sound quality (rated 3.2/5) at $439.95 and is still sold new; the KEF Q100 ranks #145 (rated 2.4/5) and is discontinued, so it is only an option used. The KEF Q100’s replacement, the KEF Q1 Meta, is rated 3.6/5 at $399.99.
The JBL Stage 250B is the better-sounding, deeper-bass option. Affordable current bookshelf speakers with a waveguide tweeter for smooth dispersion, magnetic grilles and solid build. Its bass reaches about 64.5Hz before falling 3dB, against 85Hz for the KEF Q100. The catch: Its objective score is good rather than class-leading, and the rear port needs some wall clearance.
The KEF Q100 is the more accurate choice. A discontinued bookshelf speaker with a coaxial driver for consistent imaging and reasonably easy-to-drive sensitivity. Its measured preference score, a predictor of how neutral it sounds, is 4.96 against 4.06 for the JBL Stage 250B. Watch for: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction.
Buy the JBL Stage 250B. It is rated higher for sound quality, and the KEF Q100 is discontinued, so it is only available used.
Looking for alternatives? See the complete Passive Home rankings.
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Specifications Side By Side
| JBL Stage 250B | KEF Q100 | |
|---|---|---|
| Price | $439.95 per pair | $550 per pair Discontinued |
| Ranked | #97 of 179 in Medium Size Bookshelf Speakers | #145 of 179 in Medium Size Bookshelf Speakers |
| Enclosure | Passive 2-way rear-ported | - |
| Drivers | 1-inch aluminum tweeter, 5.25-inch polycellulose woofer | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter |
| Frequency Response | 50Hz-25kHz (-6dB) | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Sensitivity | 86dB/2.83V/1m | 85dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 6 ohms | 8 ohms nominal |
| Recommended Power | 20-150W | - |
| Dimensions | 12.6H x 7.9W x 9.5D in | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| Weight | 12.3 lbs (5.6 kg) each | 13 lbs (5.9 kg) each |
| Spinorama Preference Score | 4.06 | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.60 | 7.24 (spinorama.org) |
| Bass Extension (-3dB) | 64.5Hz (measured, Erin’s Audio Corner via spinorama.org) | 85Hz (measured, Audio Science Review) |
| DIY Kit | No | No |
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) | 65Hz (measured, Audio Science Review) |
| Power Handling | 75W RMS | - |
| Woofer Cabinet | ported, rear | ported, rear |
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