Short answer: the Infinity IL10. It ranks #59 of 100 bookshelf speakers by sound quality at $160; the KEF Q3 Meta ranks #64 and costs $899.99, so there is not much of a tradeoff to weigh.
What the Infinity IL10 offers: Impressively flat for a budget bookshelf. Watch for: Resonances at 600 and 5khz, which show up as distinct distortion spikes at 96dB SPL/1m in the same frequency regions.
On the KEF Q3 Meta side: Coaxial two-way design (1” vented aluminum dome tweeter with Meta absorber embedded in a 6.5” aluminum cone mid/bass driver) delivering unusually wide dispersion both horizontally and vertically (about ±60° each) -. Set against that: Not well suited to high-output use: compression and strain in the 1-2kHz region emerge above about 90dB at 10 feet, so a high-output home theater setup isn’t the best application.
Buy the Infinity IL10. It ranks higher for sound quality than the KEF Q3 Meta and costs less, so there is no real case for the other one.
Specifications Side By Side
| Infinity IL10 | KEF Q3 Meta | |
|---|---|---|
| Price | $160 used, Discontinued | $899.99 |
| Ranked | #59 of 100 in Large Size Bookshelf Speakers | #64 of 100 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 44Hz (measured, Audio Science Review) | 37Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 59Hz (measured, Audio Science Review) | 52Hz (measured, Erin’s Audio Corner) |
| Impedance | 6 ohms | 4 ohms nominal, 3.7 ohms minimum (measured above 80Hz, Erin’s Audio Corner) |
| Sensitivity | 86dB (measured, Audio Science Review) | 84.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 87dB manufacturer specified) |
| Drivers | 6.5" (165mm) woofer | 165 mm (6.5 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with MAT tweeter |
| Weight | 14.3 lbs / 6.5 kg | 15.9 lbs / 7.2 kg |
| Discontinued | Yes | - |
| Dimensions | 15.6"H x 8.5"W x 11.5"D (397.0 x 216.0 x 292.0 mm) | 14.1"H x 8.3"W x 12"D (357.0 x 210.0 x 305.0 mm) |
| Woofer Cabinet | ported, rear | ported, rear |
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- Polk Monitor XT20 vs Polk R200
- SVS Prime Bookshelf vs Klipsch RP-600M
- ELAC Debut 2.0 B6.2 vs SVS Prime Bookshelf
- Behringer B2030P vs KEF Q3 Meta
- KEF Q3 Meta vs Polk Monitor XT20
The Two Speakers In Full
Infinity IL10: $160 used, Discontinued
Pros: Impressively flat for a budget bookshelf. Predicted in-room response is good aside from a bit of excess energy here and there. Distortion at 96dB SPL/1m stays low and controlled outside two narrow resonance-driven peaks.
Cons: Resonances at 600 and 5khz, which show up as distinct distortion spikes at 96dB SPL/1m in the same frequency regions. Discontinued.
Full Infinity IL10 review and specifications →
| Bass Extension (-10dB) | 44Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 59Hz (measured, Audio Science Review) |
| Dimensions | 15.6"H x 8.5"W x 11.5"D (397.0 x 216.0 x 292.0 mm) |
| Discontinued | Yes |
| Drivers | 6.5" (165mm) woofer |
| Impedance | 6 ohms |
| Sensitivity | 86dB (measured, Audio Science Review) |
| Weight | 14.3 lbs / 6.5 kg |
| Woofer Cabinet | ported, rear |
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- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Infinity IL10 vs Behringer B2030P
- Infinity IL10 vs Dynaudio Special Forty
- Infinity IL10 vs ELAC Debut 2.0 B6.2
- Infinity IL10 vs JBL Studio 630
- Infinity IL10 vs SVS Prime Bookshelf
- Infinity IL10 vs Dynaudio Emit 20
- Infinity IL10 vs Polk Monitor XT20
- Infinity IL10 vs Klipsch RP-600M II
- See all 13 comparisons
KEF Q3 Meta: $899.99 Amazon Crutchfield
Pros: Coaxial two-way design (1” vented aluminum dome tweeter with Meta absorber embedded in a 6.5” aluminum cone mid/bass driver) delivering unusually wide dispersion both horizontally and vertically (about ±60° each) - wider than typical KEF models, which usually run closer to ±50° horizontal and ±15-20° vertical for non-coaxial designs. A deliberate ~2dB bump around 120Hz gives a satisfying sense of kick-drum impact, a voicing choice the reviewer personally favors even though it’s not strictly accurate. Extended bass-shelf tuning allows placement close to a rear wall (about 1 foot) without sounding boomy. Good directivity overall means it takes well to EQ correction if desired. Cabinet resonances around 350-370Hz and 600Hz look concerning in impedance measurements, but blind ABX testing (24 trials) after adding damping material couldn’t reliably distinguish the treated cabinet from the untreated one - these particular resonances appear to fall below the threshold of audibility. Sturdier build than previous KEF Q-series models.
Cons: Not well suited to high-output use: compression and strain in the 1-2kHz region emerge above about 90dB at 10 feet, so a high-output home theater setup isn’t the best application. A slight loss of attack and clarity around 1-2kHz was noticeable both subjectively and in measurements. F3 of 52Hz with a fairly quick rolloff below 50Hz means a subwoofer is still recommended for real bass extension, even for moderate-volume home theater use. Sealed configuration (using the included port bungs) pushes the bass rolloff up into the 100Hz+ region - the reviewer recommends leaving it in ported mode instead. Sounds best pointed directly at the listener; toeing it out 30° rolls off the top end without a meaningful soundstage benefit. Compression testing shows real breakdown at 102dB/1m, with the woofer losing excursion control - confirms the practical output ceiling. An unexplained -5dB dip appears in on-axis measurements that the reviewer couldn’t attribute to a specific cause.
Full KEF Q3 Meta review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 52Hz (measured, Erin's Audio Corner) |
| Dimensions | 14.1"H x 8.3"W x 12"D (357.0 x 210.0 x 305.0 mm) |
| Drivers | 165 mm (6.5 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with MAT tweeter |
| Impedance | 4 ohms nominal, 3.7 ohms minimum (measured above 80Hz, Erin's Audio Corner) |
| Sensitivity | 84.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin's Audio Corner; 87dB manufacturer specified) |
| Weight | 15.9 lbs / 7.2 kg |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
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- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons