Short answer: the JBL L52 Classic for better sound quality, the Q Acoustics 3020i for the lower price. The JBL L52 Classic ranks #34 of 56 bookshelf speakers at $1099.95. The Q Acoustics 3020i ranks #39 at $314.99, $784.96 cheaper.
What the JBL L52 Classic gets right: Genuine walnut wood veneer cabinet with a retro Quadrex foam grille (black, orange, or dark blue) reviving JBL’s classic L-series look. The catch: 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.
On the Q Acoustics 3020i side: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. Set against that: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot.
Buy the JBL L52 Classic if sound quality matters more than the price. Buy the Q Acoustics 3020i if the price matters more than sound quality.
Specifications Side By Side
| JBL L52 Classic | Q Acoustics 3020i | |
|---|---|---|
| Price | $1,099.95 | $314.99 |
| Ranked | #34 of 56 in Medium Size Bookshelf Speakers | #39 of 56 in Medium Size Bookshelf Speakers |
| Drivers | 5.25" pure pulp cone woofer, 0.75" titanium dome tweeter with waveguide | 125mm (5") bass driver, 22mm (0.9") tweeter |
| Dimensions | 13-1/16"H x 7-13/16"W x 8-11/16"D | 10.9"H x 6.7"W x 11.1"D (278 x 170 x 282 mm) |
| Weight | 11 lbs each | 10.6 lbs / 4.8 kg each |
| Impedance | 4 ohms nominal, 3.7 ohms minimum (measured, Erin’s Audio Corner) | 6 ohms nominal, 4 ohms minimum |
| Sensitivity | 85dB (measured average, Erin’s Audio Corner) | 86dB (2.83V/1m, manufacturer specified) |
| Frequency Response | 47Hz - 24kHz (-6dB, manufacturer specified) | - |
| Power Handling | 10-75W RMS | - |
| Bass Extension (-3dB) | 62Hz (measured average, Erin’s Audio Corner) | - |
| Bass Extension (-10dB) | 45Hz (measured average, Erin’s Audio Corner) | - |
| Crossover Frequency | 2.8kHz | 2.4kHz |
| Woofer Cabinet | - | ported, reflex |
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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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Q Acoustics 3020i: $314.99 Amazon
Pros: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. Vertical directivity is good enough that the tweeter doesn’t need to be exactly at ear level. With EQ correction, especially high-frequency shelving and a sub-40Hz high-pass filter, Amir found performance “improves substantially.”
Cons: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot. Horizontal directivity is narrow and uneven due to a woofer/tweeter beamwidth mismatch. Amir cautions the speaker is “merely a distortion generator” if played too low, and its low impedance demands a quality amplifier. Without EQ, Amir “can’t recommend the Q Acoustics 3020i.”
Full Q Acoustics 3020i review and specifications →
| Crossover Frequency | 2.4kHz |
|---|---|
| Dimensions | 10.9"H x 6.7"W x 11.1"D (278 x 170 x 282 mm) |
| Drivers | 125mm (5") bass driver, 22mm (0.9") tweeter |
| Impedance | 6 ohms nominal, 4 ohms minimum |
| Sensitivity | 86dB (2.83V/1m, manufacturer specified) |
| Weight | 10.6 lbs / 4.8 kg each |
| Woofer Cabinet | ported, reflex |
As an eBay Partner, we may be compensated if you make a purchase.
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