Short answer: the Alcons Audio QRP40 if sound quality matters most, the Alcons Audio QRP20 if price matters most. The Alcons Audio QRP40 ranks #8 of 33 column and line array PA speakers, rated 3.7/5, at $7,500. The Alcons Audio QRP20 ranks #9, rated 3.6/5, at $4,200, $3,300 cheaper.
The Alcons Audio QRP40 is the deeper-bass option. A shallow wall-mount ribbon column with high output and wide coverage that is easy to hide in a room. Its bass reaches about 73Hz before falling 3dB, against 90Hz for the Alcons Audio QRP20. The catch: A 4.22 directivity-index deviation means off-axis tone varies more than its Alcons Audio QR24 sibling, and it needs a subwoofer below about 70Hz.
Why pick the Alcons Audio QRP20: A slim ribbon column with high output and a choice of wide horizontal coverage, built for discreet installs. Watch for: Bass reaches only 90Hz at -3dB and about 81Hz at -10dB, so it needs a subwoofer for music.
Buy the Alcons Audio QRP40 if sound quality matters more than the price. Buy the Alcons Audio QRP20 if the price matters more than sound quality.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Alcons Audio QRP40 | Alcons Audio QRP20 | |
|---|---|---|
| Price | $7,500 Passive | $4,200 Passive |
| Ranked | #8 of 33 in Column and Line Array PA Speakers | #9 of 33 in Column and Line Array PA Speakers |
| Passive | Yes | Yes |
| Configuration | Passive 2-way point-source column (pro-ribbon) | Passive 2-way point-source column (pro-ribbon) |
| Drivers | 1x 12” RBN1203 pro-ribbon driver, 8x 5” woofers (sealed) | 1x 4” RBN401 pro-ribbon driver, 4x 5” woofers (sealed) |
| Frequency Response | 71Hz - 20kHz (±3dB, manufacturer specified) | 72Hz - 20kHz (±3dB, manufacturer specified) |
| Dimensions | 44”H x 6.3”W x 9.3”D (1118 x 161 x 236 mm) | 29.2”H x 5.9”W x 5.9”D (742 x 150 x 150 mm) |
| Amplifier Power | Passive speaker; requires external amplification (Alcons Sentinel) | Passive speaker; requires external amplification (Alcons Sentinel) |
| Maximum SPL | 131dB peak (manufacturer specified) | 128dB peak (manufacturer specified) |
| Coverage | 90° x 20° (120° version available) | 90° x 15° (120° version available) |
| Sensitivity | 103dB (200Hz - 10kHz) | 99dB (200Hz - 10kHz) |
| Impedance | 4 ohms | 4 ohms |
| DSP | No (passive) | No (passive) |
| Weight | 48.5 lbs (22 kg) | 26.5 lbs (12 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) | 73Hz (measured, vendor Spinorama data) | 90Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 63.8Hz (measured, vendor Spinorama data) | about 80.8Hz (measured, vendor Spinorama data) |
| Spinorama Preference Score | 3.80 | 3.38 |
| Spinorama Preference Score with Perfect Sub | 6.67 | 6.69 |
| Rigging | - | M10 inserts top and bottom; M6 bracket pattern on back |
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