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 JBL COL600 ranks #12 (rated 3.3/5).
What the Alcons Audio QRP20 does well: 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.
What the JBL COL600 does well: Manufacturer measurements give a 6.11 preference score with an ideal subwoofer and a 2.1dB reference band from a 598mm column only 93mm deep. The tradeoff: Bass measures 106Hz at -3dB and about 78Hz at -10dB, and output tops out at 111dB, so it is for speech and background music.
Buy the Alcons Audio QRP20. It is rated higher for sound quality than the JBL COL600.
Want more options? Browse the full PA & Live Sound rankings.
Specifications Side By Side
| Alcons Audio QRP20 | JBL COL600 | |
|---|---|---|
| Price | - | $386.00 |
| Ranked | #8 of 13 in Line Array and Installation PA Speakers | #12 of 13 in Line Array and Installation PA Speakers |
| Configuration | Passive 2-way point-source column (pro-ribbon) | Passive slim column (8 ohm or 70V/100V) |
| Drivers | 1x 4” RBN401 pro-ribbon driver, 4x 5” woofers (sealed) | 2x 5” x 2.25” racetrack woofers, 1x 1” tweeter |
| Frequency Response | 72Hz - 20kHz (±3dB, manufacturer specified) | 70Hz - 20kHz (-10dB, manufacturer specified) |
| Dimensions | 29.2”H x 5.9”W x 5.9”D (742 x 150 x 150 mm) | 23.5”H x 4”W x 3.7”D (598 x 102 x 93 mm) |
| Amplifier Power | Passive speaker; requires external amplification (Alcons Sentinel) | Passive speaker; requires external amplification |
| Maximum SPL | 128dB peak (manufacturer specified) | 111dB peak (manufacturer specified) |
| Coverage | 90° x 15° (120° version available) | 160° x 110°, 10° down-tilt |
| Sensitivity | 99dB (200Hz - 10kHz) | 86dB (2.83V/1m) |
| Impedance | 4 ohms | 8 ohms |
| DSP | No (passive) | No (passive) |
| Weight | 26.5 lbs (12 kg) | 7.7 lbs (3.5 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) | 106Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 80.8Hz (measured, vendor Spinorama data) | about 77.7Hz (measured, vendor Spinorama data) |
| Spinorama Preference Score | 3.38 | 2.64 |
| Spinorama Preference Score with Perfect Sub | 6.69 | 6.11 |
| Power Handling | - | 80W continuous pink noise (320W peak) |
Related Speaker Comparisons
More worthwhile head-to-heads for 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.
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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
JBL COL600: $386.00 Passive B&H Photo Video eBay
Pros: Manufacturer measurements give a 6.11 preference score with an ideal subwoofer and a 2.1dB reference band from a 598mm column only 93mm deep. Two racetrack woofers and a 1-inch tweeter give 160° x 110° coverage with a 10° downward tilt, and a 70V/100V transformer or 8 ohm direct mode suits restaurants, shops and meeting rooms. Measured bass extension of 106Hz (-3dB).
Cons: Bass measures 106Hz at -3dB and about 78Hz at -10dB, and output tops out at 111dB, so it is for speech and background music. The data is manufacturer supplied, rated low quality, and the standalone score is 2.64.
Full JBL COL600 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification |
| Aux Input | No |
| Bass Extension (-10dB) | about 77.7Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 106Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive slim column (8 ohm or 70V/100V) |
| Coverage | 160° x 110°, 10° down-tilt |
| DSP | No (passive) |
| Dimensions | 23.5”H x 4”W x 3.7”D (598 x 102 x 93 mm) |
| Drivers | 2x 5” x 2.25” racetrack woofers, 1x 1” tweeter |
| Frequency Response | 70Hz - 20kHz (-10dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 8 ohms |
| Maximum SPL | 111dB peak (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| Power Handling | 80W continuous pink noise (320W peak) |
| RCA Input | No |
| Sensitivity | 86dB (2.83V/1m) |
| Spinorama Preference Score | 2.64 |
| Spinorama Preference Score with Perfect Sub | 6.11 |
| TRS Input | No |
| USB Input | No |
| Weight | 7.7 lbs (3.5 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons