Short answer: the Kling Freitag PIA M. It ranks #4 of 13 line array and installation pa speakers by sound quality (rated 4.1/5); the Alcons Audio QRP40 ranks #7 (rated 3.7/5).
The case for the Kling Freitag PIA M: High-quality manufacturer measurements give preference scores of 4.50 standalone and 7.92 with an ideal subwoofer, with a 1.7dB reference band and 0.82 predicted in-room smoothness. The catch: Bass is limited, at 95Hz for -3dB and about 82Hz for -10dB in bass-reflex mode, so it needs a subwoofer for music.
What the Alcons Audio QRP40 does well: High-quality manufacturer measurements give preference scores of 3.80 standalone and 6.67 with an ideal subwoofer. Watch for: A 4.22 directivity-index deviation means off-axis tone varies more than its QR24 sibling, and it needs a subwoofer below about 70Hz.
Buy the Kling Freitag PIA M. It is rated higher for sound quality than the Alcons Audio QRP40.
Looking for alternatives? See the complete PA & Live Sound rankings.
Specifications Side By Side
| Kling Freitag PIA M | Alcons Audio QRP40 | |
|---|---|---|
| Price | - | - |
| Ranked | #4 of 13 in Line Array and Installation PA Speakers | #7 of 13 in Line Array and Installation PA Speakers |
| Configuration | Passive 3-way column loudspeaker | Passive 2-way point-source column (pro-ribbon) |
| Drivers | 4x 0.75” compression drivers on adjustable horn, 2x 4” midrange (cardioid chamber), 4x 4” woofers (switchable bass-reflex/cardioid) | 1x 12” RBN1203 pro-ribbon driver, 8x 5” woofers (sealed) |
| Frequency Response | 85Hz - 23kHz (±10dB, bass-reflex mode, manufacturer specified) | 71Hz - 20kHz (±3dB, manufacturer specified) |
| Dimensions | 47.1”H x 5.5”W x 6.6”D (1196 x 139 x 168 mm) | 44”H x 6.3”W x 9.3”D (1118 x 161 x 236 mm) |
| Amplifier Power | Passive speaker; requires external amplification | Passive speaker; requires external amplification (Alcons Sentinel) |
| Power Handling | 150W nominal / 325W program / 650W peak | - |
| Maximum SPL | 132dB (manufacturer specified) | 131dB peak (manufacturer specified) |
| Coverage | 100° x 5° to 25° (adjustable) | 90° x 20° (120° version available) |
| Impedance | 8 ohms | 4 ohms |
| DSP | No (passive) | No (passive) |
| Weight | 26.9 lbs (12.2 kg) | 48.5 lbs (22 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) | 95Hz (measured, vendor Spinorama data) | 73Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 81.7Hz (measured, vendor Spinorama data) | about 63.8Hz (measured, vendor Spinorama data) |
| Spinorama Preference Score | 4.50 | 3.80 |
| Spinorama Preference Score with Perfect Sub | 7.92 | 6.67 |
| Sensitivity | - | 103dB (200Hz - 10kHz) |
Related Speaker Comparisons
How Kling Freitag PIA M compares with other leading options:
- L-Acoustics SYVA-low+top vs Kling Freitag PIA M
- JBL CBT 1000 + CBT 1000E vs Kling Freitag PIA M
- JBL CBT 1000 vs Kling Freitag PIA M
- Kling Freitag PIA M vs L-Acoustics SYVA
- Kling Freitag PIA M vs Alcons Audio QR24
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
Kling Freitag PIA M Passive eBay
Pros: High-quality manufacturer measurements give preference scores of 4.50 standalone and 7.92 with an ideal subwoofer, with a 1.7dB reference band and 0.82 predicted in-room smoothness. The 3-way column has an adjustable tweeter array (5°, 15° or 25° vertical), a cardioid midrange and a woofer section switchable between bass reflex and cardioid to cut sound behind the speaker. It reaches 132dB from a slim 12.2kg cabinet. Measured bass extension of 95Hz (-3dB).
Cons: Bass is limited, at 95Hz for -3dB and about 82Hz for -10dB in bass-reflex mode, so it needs a subwoofer for music. It is passive and meant for Kling & Freitag amplifiers, and it is sold only through pro dealers with no published price.
Full Kling Freitag PIA M review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification |
| Aux Input | No |
| Bass Extension (-10dB) | about 81.7Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 95Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Coaxial Input | No |
| Configuration | Passive 3-way column loudspeaker |
| Coverage | 100° x 5° to 25° (adjustable) |
| DSP | No (passive) |
| Dimensions | 47.1”H x 5.5”W x 6.6”D (1196 x 139 x 168 mm) |
| Drivers | 4x 0.75” compression drivers on adjustable horn, 2x 4” midrange (cardioid chamber), 4x 4” woofers (switchable bass-reflex/cardioid) |
| Frequency Response | 85Hz - 23kHz (±10dB, bass-reflex mode, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 8 ohms |
| Maximum SPL | 132dB (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| Power Handling | 150W nominal / 325W program / 650W peak |
| RCA Input | No |
| Spinorama Preference Score | 4.50 |
| Spinorama Preference Score with Perfect Sub | 7.92 |
| TRS Input | No |
| USB Input | No |
| Weight | 26.9 lbs (12.2 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Alcons Audio QRP40 Passive eBay
Pros: 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 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.
Full Alcons Audio QRP40 review and specifications →
| 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 |
| 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 |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons