The Alcons Audio QRP40 is rated 3.7/5 for sound quality, #8 of 33 Column and Line Array PA Speakers. See all PA & Live Sound rankings for every top pick.
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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Brand: Alcons Audio
#8 Alcons Audio QRP40: $7,500 Passive eBay
Same family: the Alcons Audio QRP20 (smaller model, ranked lower, rated 3.6/5) and the Alcons Audio QR24 (smaller model, ranked higher, rated 4/5).
Pros: A shallow wall-mount ribbon column with high output and wide coverage that is easy to hide in a room. High-quality manufacturer measurements give preference scores of 3.80 standalone and 6.67 with an ideal subwoofer. A 12-inch pro-ribbon driver sits coaxially within eight sealed 5-inch woofers, giving 103dB sensitivity and a 131dB peak with 90° or 120° horizontal coverage. Bass reaches 73Hz at -3dB, and the shallow 236mm cabinet is easy to hide on a wall. Measured bass extension of 73Hz (-3dB).
Cons: 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. It needs Alcons Sentinel amplification and is sold only through pro dealers with no published price.
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification (Alcons Sentinel) |
| Aux Input | No |
| Bass Extension (-10dB) | about 63.8Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 73Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive 2-way point-source column (pro-ribbon) |
| Coverage | 90° x 20° (120° version available) |
| DSP | No (passive) |
| Dimensions | 44”H x 6.3”W x 9.3”D (1118 x 161 x 236 mm) |
| Drivers | 1x 12” RBN1203 pro-ribbon driver, 8x 5” woofers (sealed) |
| Frequency Response | 71Hz - 20kHz (±3dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 4 ohms |
| Maximum SPL | 131dB peak (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| Passive | Yes |
| RCA Input | No |
| Sensitivity | 103dB (200Hz - 10kHz) |
| Spinorama Preference Score | 3.80 |
| Spinorama Preference Score with Perfect Sub | 6.67 |
| TRS Input | No |
| USB Input | No |
| Weight | 48.5 lbs (22 kg) |
| XLR Input | No |
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