Short answer: a tie on sound quality. Both are rated 4.0/5 (#5 and #6 of 13 line array and installation pa speakers), so choose on features and fit.
Why pick the L-Acoustics SYVA: Vendor Spinorama data gives preference scores of 4.01 standalone and 7.58 with an ideal subwoofer. The catch: On its own it reaches only about 106Hz (-3dB), so it cannot be used without a subwoofer.
What the Alcons Audio QR24 does well: High-quality manufacturer measurements give preference scores of 4.38 standalone and 7.25 with an ideal subwoofer, with a tight 1.4dB reference band and 0.279 listening-window deviation. The tradeoff: Bass drops quickly below about 70Hz, so a subwoofer is needed for full-range music.
Buy the L-Acoustics SYVA or the Alcons Audio QR24 on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete PA & Live Sound rankings.
Specifications Side By Side
| L-Acoustics SYVA | Alcons Audio QR24 | |
|---|---|---|
| Price | - | - |
| Ranked | #5 of 13 in Line Array and Installation PA Speakers | #6 of 13 in Line Array and Installation PA Speakers |
| Configuration | Passive 2-way line source | Passive 2-way modular column (pro-ribbon) |
| Drivers | 6x 5” cone drivers, 3x 1.75” compression drivers | 2x 12” RBN1203 pro-ribbon drivers, 4x 6.5” neodymium woofers (vented) |
| Frequency Response | 87Hz - 20kHz (manufacturer specified) | 74Hz - 20kHz (±3dB, manufacturer specified) |
| Dimensions | 51.2”H x 5.7”W x 8.2”D (1301 x 144 x 209 mm) | 25.9”H x 9.8”W x 13.2”D (658 x 248 x 336 mm) |
| Inputs | Speakon (via L-Acoustics amplified controller) | - |
| Amplifier Power | Passive speaker; requires an L-Acoustics amplified controller (LA4X, LA12X or LA7.16i) | Passive speaker; requires external amplification (Alcons Sentinel) |
| Cabinet Material | Baltic beech and birch plywood | - |
| Bass Extension (-3dB) | 106Hz (measured, vendor Spinorama data) | 71Hz (measured, vendor Spinorama data) |
| Coverage | 140° horizontal, +5°/-21° vertical | 80° or 110° horizontal x 3.6° per module |
| Maximum SPL | 137dB (manufacturer specified) | 135dB peak (manufacturer specified) |
| DSP | No (passive; processing and protection come from the amplified controller) | No (passive) |
| Weight | 46.3 lbs (21 kg) | 48.5 lbs (22 kg) |
| Spinorama Preference Score | 4.01 | 4.38 |
| Spinorama Preference Score with Perfect Sub | 7.58 | 7.25 |
| Bluetooth | No | No |
| XLR Input | No | No |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Microphone Input | No | No |
| Guitar Input | No | No |
| Sensitivity | - | 109dB (200Hz - 10kHz) |
| Impedance | - | 8 ohms |
| Bass Extension (-10dB) | - | about 62.5Hz (measured, vendor Spinorama data) |
Related Speaker Comparisons
How L-Acoustics SYVA compares with other leading options:
- JBL CBT 1000 + CBT 1000E vs L-Acoustics SYVA
- JBL CBT 1000 vs L-Acoustics SYVA
- Kling Freitag PIA M vs L-Acoustics SYVA
- L-Acoustics SYVA vs Alcons Audio QRP20
- L-Acoustics SYVA vs JBL COL600
Prices on this page were last checked September 26, 2026 at 11:14 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
L-Acoustics SYVA Passive eBay
Pros: Vendor Spinorama data gives preference scores of 4.01 standalone and 7.58 with an ideal subwoofer. Six 5-inch drivers and three compression drivers form a slim 21kg line source with 140° horizontal coverage and 137dB peak SPL. It is intended to be paired with SYVA Low or a subwoofer, which is where the system’s bass comes from. Measured bass extension of 106Hz (-3dB).
Cons: On its own it reaches only about 106Hz (-3dB), so it cannot be used without a subwoofer. It is a passive line source that needs L-Acoustics amplified controllers, and the narrow 25° vertical coverage limits placement flexibility. Listening-window narrow-band deviation is 0.319 and on-axis deviation is higher than the coaxial competition.
Full L-Acoustics SYVA review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires an L-Acoustics amplified controller (LA4X, LA12X or LA7.16i) |
| Aux Input | No |
| Bass Extension (-3dB) | 106Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Baltic beech and birch plywood |
| Coaxial Input | No |
| Configuration | Passive 2-way line source |
| Coverage | 140° horizontal, +5°/-21° vertical |
| DSP | No (passive; processing and protection come from the amplified controller) |
| Dimensions | 51.2”H x 5.7”W x 8.2”D (1301 x 144 x 209 mm) |
| Drivers | 6x 5” cone drivers, 3x 1.75” compression drivers |
| Frequency Response | 87Hz - 20kHz (manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Inputs | Speakon (via L-Acoustics amplified controller) |
| Maximum SPL | 137dB (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 4.01 |
| Spinorama Preference Score with Perfect Sub | 7.58 |
| TRS Input | No |
| USB Input | No |
| Weight | 46.3 lbs (21 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Alcons Audio QR24 Passive eBay
Pros: High-quality manufacturer measurements give preference scores of 4.38 standalone and 7.25 with an ideal subwoofer, with a tight 1.4dB reference band and 0.279 listening-window deviation. Two 12-inch pro-ribbon drivers above four 6.5-inch woofers give 109dB sensitivity and a 135dB peak, and bass reaches 71Hz at -3dB. It works alone or stacked with more modules as a vertical array, in 80° or 110° horizontal versions. Measured bass extension of 71Hz (-3dB).
Cons: Bass drops quickly below about 70Hz, so a subwoofer is needed for full-range music. It needs Alcons Sentinel amplification for its presets, weighs 22kg, and is sold only through pro dealers with no published price.
Full Alcons Audio QR24 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification (Alcons Sentinel) |
| Aux Input | No |
| Bass Extension (-10dB) | about 62.5Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 71Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive 2-way modular column (pro-ribbon) |
| Coverage | 80° or 110° horizontal x 3.6° per module |
| DSP | No (passive) |
| Dimensions | 25.9”H x 9.8”W x 13.2”D (658 x 248 x 336 mm) |
| Drivers | 2x 12” RBN1203 pro-ribbon drivers, 4x 6.5” neodymium woofers (vented) |
| Frequency Response | 74Hz - 20kHz (±3dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 8 ohms |
| Maximum SPL | 135dB peak (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Sensitivity | 109dB (200Hz - 10kHz) |
| Spinorama Preference Score | 4.38 |
| Spinorama Preference Score with Perfect Sub | 7.25 |
| TRS Input | No |
| USB Input | No |
| Weight | 48.5 lbs (22 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons