Short answer: choose between the RCF KX 45-A and KV2 Audio EX15 for the deployment, not from the automatic ranking alone. Their driver format, power requirements, coverage, bass reach, output capability, and control features determine which is the more practical PA for a particular room or system.
The case for the RCF KX 45-A. RCF’s flagship 15-inch point source pairs a 3200W amplifier with a 3-inch titanium-dome compression driver, RDNet remote control and a 137dB claimed peak, the highest maximum-output claim in this ranking. Rotatable 100° x 70° coverage suits both main and monitor use.
The case for the KV2 Audio EX15. Medium-quality vendor data gives it a 4.83 ideal-subwoofer preference score with 42Hz measured extension, the deepest bass reach of any 15-inch box in this ranking. Its 3-inch-diaphragm compression driver and integrated DSP target vocal clarity and controlled throw.
Important trade-offs. The local measurement is truncated and cannot produce a preference score. At 62.6 lbs (28.4 kg) it is one of the heaviest boxes here, and pricing/retail availability are not yet established.
Buy the RCF KX 45-A when its stated format, coverage, and system features fit the job better.
Buy the KV2 Audio EX15 when its stated output, control, and deployment strengths better match the system.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
A flagship powered 15 inch PA speaker with huge amplifier power, very loud peaks, remote control and rotatable coverage.
A powered 15 inch PA speaker with very deep bass, good sound and DSP tuned for clear vocals over long throws.
Prices on this page were last checked October 23, 2026 at 8:27 AM 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
| RCF KX 45-A | KV2 Audio EX15 | |
|---|---|---|
| Price | $4,618.50 | $6,000 |
| Ranked | #5 of 76 in 15-Inch PA Speakers | #11 of 76 in 15-Inch PA Speakers |
| Passive | No | No |
| Configuration | Active 2-way bass-reflex point-source PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 15” neodymium woofer, 1.4” exit/3” dome compression driver | 15” neodymium woofer, 1.4” exit/3” diaphragm compression driver |
| Frequency Response | 50Hz - 20kHz (manufacturer specified) | 44Hz - 18kHz (-3dB, manufacturer specified) |
| Dimensions | 27.8”H x 16.5”W x 16.9”D (705 x 419.6 x 430 mm) | 27.6”H x 17.7”W x 17.7”D (700 x 450 x 450 mm) |
| Coverage | 100° x 70°, rotatable | 80° x 60° (mid-range horn; coaxial HF/LF section is wide dispersion) |
| Maximum SPL | 137dB peak (manufacturer specified) | 129dB (system max long-term SPL, manufacturer specified) |
| Inputs | XLR audio input/link and EtherCON RDNet | Balanced female XLR input; male XLR through output |
| Amplifier Power | 3200W peak (2000W LF + 1200W HF) | 1,000W continuous (850W LF + 100W mid + 50W HF, manufacturer specified) |
| Crossover Frequency | 750Hz | 500Hz / 2.7kHz (manufacturer specified) |
| Cabinet Material | Baltic birch plywood | Baltic birch plywood |
| Rigging | Quick-lock rigging; 6 x M10 inserts; 35mm pole mount | Two side-mounted M10 hang points, compatible with vertical bracket or eyebolts |
| Network Control | RDNet | - |
| DSP | Yes, FiRPHASE, Bass Motion Control, presets and RDNet | Integrated crossover, phase alignment, EQ and protection |
| Bluetooth | No | No |
| Weight | 62.6 lbs (28.4 kg) | 94.8 lbs (43 kg) |
| XLR Input | Yes | Yes |
| 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) | 54.5Hz (measured, manufacturer spinorama data) | 50Hz (measured, vendor Spinorama data) |
| Spinorama Preference Score | - | 2.82 |
| Spinorama Preference Score with Perfect Sub | - | 4.83 |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared.
Measurement data: RCF KX 45-A (measured by the manufacturer) and KV2 Audio EX15 (measured by the manufacturer), via spinorama.org.
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