Short answer: the Alcons Audio QRP20. It ranks #8 of 13 line array and installation pa speakers by sound quality (rated 3.6/5); the Coda Audio CoRay4 ranks #13 (rated 3.0/5).
Why pick the Alcons Audio QRP20: High-quality manufacturer measurements of the 90° version give preference scores of 3.38 standalone and 6.69 with an ideal subwoofer. The catch: Bass reaches only 90Hz at -3dB and about 81Hz at -10dB, so it needs a subwoofer for music.
The case for the Coda Audio CoRay4: Two 4-inch planar wave drivers above four 5-inch woofers give 97dB sensitivity and a very high 144dB peak, with 120°, 60° or asymmetric 90° horizontal coverage and an asymmetric 12° vertical pattern. The catch: High-quality manufacturer measurements give a low 1.96 standalone preference score and 5.04 with an ideal subwoofer, with a 0.619 listening-window deviation, so tonal balance is uneven.
Buy the Alcons Audio QRP20. It is rated higher for sound quality than the Coda Audio CoRay4.
Looking for alternatives? See the complete PA & Live Sound rankings.
Specifications Side By Side
| Alcons Audio QRP20 | Coda Audio CoRay4 | |
|---|---|---|
| Price | - | - |
| Ranked | #8 of 13 in Line Array and Installation PA Speakers | #13 of 13 in Line Array and Installation PA Speakers |
| Configuration | Passive 2-way point-source column (pro-ribbon) | Passive 2-way line source column (requires Coda controller) |
| Drivers | 1x 4” RBN401 pro-ribbon driver, 4x 5” woofers (sealed) | 2x 4” neodymium planar wave drivers, 4x 5” woofers |
| Frequency Response | 72Hz - 20kHz (±3dB, manufacturer specified) | 80Hz - 20kHz (-6dB, manufacturer specified) |
| Dimensions | 29.2”H x 5.9”W x 5.9”D (742 x 150 x 150 mm) | 29.8”H x 6”W x 8.4”D (758 x 152 x 214 mm) |
| Amplifier Power | Passive speaker; requires external amplification (Alcons Sentinel) | Passive speaker; requires a Coda Audio LINUS amplifier/controller |
| Maximum SPL | 128dB peak (manufacturer specified) | 144dB peak (manufacturer specified) |
| Coverage | 90° x 15° (120° version available) | 120°, 60° or 90° asymmetric horizontal x 12° vertical |
| Sensitivity | 99dB (200Hz - 10kHz) | 97dB |
| Impedance | 4 ohms | 4 ohms |
| DSP | No (passive) | No (passive) |
| Weight | 26.5 lbs (12 kg) | 34.6 lbs (15.7 kg) |
| 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 |
| Bass Extension (-3dB) | 90Hz (measured, vendor Spinorama data) | 82.5Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 80.8Hz (measured, vendor Spinorama data) | about 71.6Hz (measured, vendor Spinorama data) |
| Spinorama Preference Score | 3.38 | 1.96 |
| Spinorama Preference Score with Perfect Sub | 6.69 | 5.04 |
| Power Handling | - | 700W AES / 2,800W peak |
Related Speaker Comparisons
More top alternatives to Alcons Audio QRP20:
- L-Acoustics SYVA vs Alcons Audio QRP20
- Alcons Audio QRP40 vs Alcons Audio QRP20
- Alcons Audio QRP20 vs L-Acoustics SOKA
- Alcons Audio QRP20 vs JBL CBT 70J-1
- Alcons Audio QRP20 vs JBL COL800
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Alcons Audio QRP20 Passive eBay
Pros: High-quality manufacturer measurements of the 90° version give preference scores of 3.38 standalone and 6.69 with an ideal subwoofer. A 4-inch pro-ribbon driver on a Morpher lens above four sealed 5-inch woofers gives 99dB sensitivity and a 128dB peak from a slim 150mm-square, 12kg column, with 90° or 120° horizontal versions. Measured bass extension of 90Hz (-3dB).
Cons: Bass reaches only 90Hz at -3dB and about 81Hz at -10dB, so it needs a subwoofer for music. The 120° version measures slightly worse, at 3.00 standalone. It needs Alcons Sentinel amplification and is sold only through pro dealers with no published price.
Full Alcons Audio QRP20 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification (Alcons Sentinel) |
| Aux Input | No |
| Bass Extension (-10dB) | about 80.8Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 90Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive 2-way point-source column (pro-ribbon) |
| Coverage | 90° x 15° (120° version available) |
| DSP | No (passive) |
| Dimensions | 29.2”H x 5.9”W x 5.9”D (742 x 150 x 150 mm) |
| Drivers | 1x 4” RBN401 pro-ribbon driver, 4x 5” woofers (sealed) |
| Frequency Response | 72Hz - 20kHz (±3dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 4 ohms |
| Maximum SPL | 128dB peak (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Sensitivity | 99dB (200Hz - 10kHz) |
| Spinorama Preference Score | 3.38 |
| Spinorama Preference Score with Perfect Sub | 6.69 |
| TRS Input | No |
| USB Input | No |
| Weight | 26.5 lbs (12 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Coda Audio CoRay4 Passive eBay
Pros: Two 4-inch planar wave drivers above four 5-inch woofers give 97dB sensitivity and a very high 144dB peak, with 120°, 60° or asymmetric 90° horizontal coverage and an asymmetric 12° vertical pattern. Bass reaches 82.5Hz at -3dB, and columns can be linked into a longer array for touring or installation. Measured bass extension of 82.5Hz (-3dB).
Cons: High-quality manufacturer measurements give a low 1.96 standalone preference score and 5.04 with an ideal subwoofer, with a 0.619 listening-window deviation, so tonal balance is uneven. It will not work without a Coda Audio system controller, weighs 15.7kg and is sold only through pro dealers with no published price.
Full Coda Audio CoRay4 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires a Coda Audio LINUS amplifier/controller |
| Aux Input | No |
| Bass Extension (-10dB) | about 71.6Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 82.5Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive 2-way line source column (requires Coda controller) |
| Coverage | 120°, 60° or 90° asymmetric horizontal x 12° vertical |
| DSP | No (passive) |
| Dimensions | 29.8”H x 6”W x 8.4”D (758 x 152 x 214 mm) |
| Drivers | 2x 4” neodymium planar wave drivers, 4x 5” woofers |
| Frequency Response | 80Hz - 20kHz (-6dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 4 ohms |
| Maximum SPL | 144dB peak (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| Power Handling | 700W AES / 2,800W peak |
| RCA Input | No |
| Sensitivity | 97dB |
| Spinorama Preference Score | 1.96 |
| Spinorama Preference Score with Perfect Sub | 5.04 |
| TRS Input | No |
| USB Input | No |
| Weight | 34.6 lbs (15.7 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons