Short answer: the JBL L52 Classic for better sound quality, the KEF Q100 for the lower price. The JBL L52 Classic ranks #34 of 56 bookshelf speakers at $1099.95. The KEF Q100 ranks #38 at $550, $549.95 cheaper.
What the JBL L52 Classic offers: Genuine walnut wood veneer cabinet with a retro Quadrex foam grille (black, orange, or dark blue) reviving JBL’s classic L-series look. Watch for: Measured compression and distortion behavior from about 1-5 kHz was inconsistent (“wonky”) across output levels, and didn’t clean up even at lower volume.
The case for the KEF Q100: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. The tradeoff: 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 L52 Classic if sound quality matters more than the price. Buy the KEF Q100 if the price matters more than sound quality.
Specifications Side By Side
| JBL L52 Classic | KEF Q100 | |
|---|---|---|
| Price | $1,099.95 | $550 Discontinued |
| Ranked | #34 of 56 in Medium Size Bookshelf Speakers | #38 of 56 in Medium Size Bookshelf Speakers |
| Drivers | 5.25" pure pulp cone woofer, 0.75" titanium dome tweeter with waveguide | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter |
| Dimensions | 13-1/16"H x 7-13/16"W x 8-11/16"D | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) |
| Weight | 11 lbs each | 13 lbs / 5.9 kg each |
| Impedance | 4 ohms nominal, 3.7 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms nominal |
| Sensitivity | 85dB (measured average, Erin’s Audio Corner) | 85dB (2.83V/1m, measured, Audio Science Review) |
| Frequency Response | 47Hz - 24kHz (-6dB, manufacturer specified) | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Power Handling | 10-75W RMS | - |
| Bass Extension (-3dB) | 62Hz (measured average, Erin’s Audio Corner) | 85Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 45Hz (measured average, Erin’s Audio Corner) | 65Hz (measured, Audio Science Review) |
| Crossover Frequency | 2.8kHz | - |
| Discontinued | - | Yes |
| Woofer Cabinet | - | ported, rear |
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- Dynaudio X14 vs Pioneer SP-BS22-LR (Philharmonic AAM Mod)
- Tekton Troubadour vs ELAC Uni-Fi 2.0 UB52
- JBL L52 Classic vs ELAC Uni-Fi 2.0 UB52
- KEF Q100 vs Q Acoustics 5020
The Two Speakers In Full
JBL L52 Classic: $1,099.95 Amazon
Pros: Genuine walnut wood veneer cabinet with a retro Quadrex foam grille (black, orange, or dark blue) reviving JBL’s classic L-series look. 5.25” pure pulp cone woofer and 0.75” titanium dome tweeter on a waveguide, front-firing bass reflex port, in a compact stand-mount cabinet. A pronounced upper-bass bump around 100 Hz gives kick drums a punchy, textured character.
Cons: Measured compression and distortion behavior from about 1-5 kHz was inconsistent (“wonky”) across output levels, and didn’t clean up even at lower volume; adding a subwoofer high-pass didn’t fix the high-frequency distortion either. Response rolls off quickly above the upper-bass bump, so there’s punch and impact but not real low-end rumble or fundamental weight below about 60 Hz without a subwoofer. Soundstage width was inconsistent track to track, with imaging not staying locked to where instruments should be. Vocals could sound hot and slightly grainy in the 2.5-5 kHz region; pointing the speakers off-axis reduced that sharpness but also killed high-frequency air.
Full JBL L52 Classic review and specifications →
| Bass Extension (-10dB) | 45Hz (measured average, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 62Hz (measured average, Erin's Audio Corner) |
| Crossover Frequency | 2.8kHz |
| Dimensions | 13-1/16"H x 7-13/16"W x 8-11/16"D |
| Drivers | 5.25" pure pulp cone woofer, 0.75" titanium dome tweeter with waveguide |
| Frequency Response | 47Hz - 24kHz (-6dB, manufacturer specified) |
| Impedance | 4 ohms nominal, 3.7 ohms minimum (measured, Erin's Audio Corner) |
| Power Handling | 10-75W RMS |
| Sensitivity | 85dB (measured average, Erin's Audio Corner) |
| Weight | 11 lbs each |
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- Reviews, Comparisons and Sound Samples
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- JBL L52 Classic vs Pioneer SP-BS22-LR (Philharmonic AAM Mod)
- JBL L52 Classic vs Dynaudio X14
- JBL L52 Classic vs JBL Stage A120
- JBL L52 Classic vs ELAC Uni-Fi 2.0 UB52
- JBL L52 Classic vs JBL Stage 2 250B
- JBL L52 Classic vs ELAC BS U5
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KEF Q100: $550 Discontinued
Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive.
Cons: 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. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.
Full KEF Q100 review and specifications →
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) |
| Discontinued | Yes |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons