Short answer: the Kling Freitag CA 106 Pro. It ranks #18 of 39 compact 5 to 6.5-inch pa speakers by sound quality, rated 3.5/5, at $1,045; the Alcons Audio SR9 ranks #26, rated 3.2/5, and costs $2,950, so there is not much of a tradeoff to weigh.
The Kling Freitag CA 106 Pro is the deeper-bass pick. A passive 6.5 inch installation speaker with a rotatable horn for even coverage, suited to distributed systems with a subwoofer. Its bass reaches about 132Hz before falling 3dB, against 150Hz for the Alcons Audio SR9. Watch for: Bass rolls off early, about 69Hz at -10dB, so it needs a subwoofer for music, and its 125dB peak output suits near-field and moderate-distance use rather than large rooms.
The case for the Alcons Audio SR9: A passive ribbon fill speaker with a wide horizontal pattern, made for discreet front fill and speech coverage. The tradeoff: Bass reaches only about 150Hz (-3dB), the shallowest of the group, so it is a fill and speech box that depends on a subwoofer.
Buy the Kling Freitag CA 106 Pro. It is rated higher for sound quality than the Alcons Audio SR9 and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete PA & Live Sound rankings.
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
| Kling Freitag CA 106 Pro | Alcons Audio SR9 | |
|---|---|---|
| Price | $1,045 Passive | $2,950 Passive |
| Ranked | #18 of 39 in Compact 5 to 6.5-Inch PA Speakers | #26 of 39 in Compact 5 to 6.5-Inch PA Speakers |
| Rigging | 12 x M8 and 2 x M6 threaded inserts | - |
| Passive | Yes | Yes |
| Configuration | Passive 2-way compact PA speaker | Passive 2-way ribbon-fill PA speaker |
| Drivers | 6.5” woofer, 1” exit compression driver on rotatable CD horn | Dual 5” sealed woofers, RBN401 pro-ribbon |
| Frequency Response | 73Hz - 20kHz (±3dB, manufacturer specified) | - |
| Amplifier Power | Passive speaker; requires external amplification | Passive speaker; requires external amplification within the 800W peak handling rating |
| Power Handling | 200W nominal / 400W program / 600W peak | 800W peak (manufacturer specified) |
| Maximum SPL | 125dB peak (manufacturer specified) | 124dB peak (manufacturer specified) |
| Coverage | 90° x 60° (rotatable) | 120° horizontal x 15° vertical |
| Impedance | 16 ohms | - |
| Cabinet Material | 12mm multiplex | - |
| DSP | No (passive) | No (passive) |
| Weight | 14.8 lbs (6.7 kg) | 18.7 lbs (8.5 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) | 132Hz (measured, vendor Spinorama data) | 150Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 68.9Hz (measured, vendor Spinorama data) | - |
| Spinorama Preference Score | 2.53 | 2.46 |
| Spinorama Preference Score with Perfect Sub | 5.73 | 6.18 |
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