Short answer: choose between the Yamaha DXR12mkII and RCF KX 45-A by matching the speaker to the deployment rather than treating their ranking positions as a universal verdict. Coverage, cabinet format, bass extension, output capability, DSP, and service support all matter in a PA system. The Yamaha DXR12mkII is discontinued; its replacement is the Yamaha DXR12mkIII.
Why choose the Yamaha DXR12mkII. A proven, broadly distributed workhorse with a flexible three-channel input section and 134dB claimed maximum output. Medium-quality vendor Spinorama data and 61Hz measured extension provide more evidence than many PA competitors, while Yamaha’s FIR-X processing and D-CONTOUR presets simplify setup.
Why choose 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.
What to weigh before buying. The 5.49 ideal-subwoofer preference score is only mid-pack, with meaningful response/directivity irregularity in the supplied data. It lacks app control and Bluetooth audio, and newer competitors offer more user-adjustable DSP. 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 Yamaha DXR12mkII when its stated coverage, output, processing, and installation format fit the job better.
Buy the RCF KX 45-A when its stated strengths better suit the venue and the rest of the system.
Looking for alternatives? See the complete PA & Live Sound rankings.
A proven 12 inch PA workhorse with good sound, loud output, three input channels and easy processing presets.
A flagship powered 15 inch PA speaker with huge amplifier power, very loud peaks, remote control and rotatable coverage.
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
| Yamaha DXR12mkII | RCF KX 45-A | |
|---|---|---|
| Price | $864.99 Discontinued | $4,618.50 |
| Ranked | #17 of 83 in 12-Inch PA Speakers | #5 of 76 in 15-Inch PA Speakers |
| Passive | No | No |
| Configuration | Active 2-way bass-reflex PA speaker | Active 2-way bass-reflex point-source PA speaker |
| Drivers | 12” woofer, 1.75” compression driver | 15” neodymium woofer, 1.4” exit/3” dome compression driver |
| Frequency Response | 52Hz - 20kHz (manufacturer specified) | 50Hz - 20kHz (manufacturer specified) |
| Dimensions | 23.7”H x 14.3”W x 13.8”D (601 x 362 x 350 mm) | 27.8”H x 16.5”W x 16.9”D (705 x 419.6 x 430 mm) |
| Amplifier Power | 1100W dynamic / 700W continuous (950W LF + 150W HF dynamic) | 3200W peak (2000W LF + 1200W HF) |
| Cabinet Material | Matte-finish ABS | Baltic birch plywood |
| Rigging | 3 x M10 points; 35mm dual-angle pole mount | Quick-lock rigging; 6 x M10 inserts; 35mm pole mount |
| Bass Extension (-3dB) | 61Hz (measured, vendor Spinorama data) | 54.5Hz (measured, manufacturer spinorama data) |
| Coverage | 90° x 60° | 100° x 70°, rotatable |
| Maximum SPL | 134dB peak (manufacturer specified) | 137dB peak (manufacturer specified) |
| Inputs | 2 x XLR/TRS combo, stereo RCA | XLR audio input/link and EtherCON RDNet |
| DSP | Yes | Yes, FiRPHASE, Bass Motion Control, presets and RDNet |
| Bluetooth | No | No |
| Weight | 41 lbs (18.6 kg) | 62.6 lbs (28.4 kg) |
| Spinorama Preference Score | 2.78 | - |
| Spinorama Preference Score with Perfect Sub | 5.49 | - |
| XLR Input | Yes | Yes |
| RCA Input | Yes | No |
| TRS Input | Yes | 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 |
| Crossover Frequency | - | 750Hz |
| Network Control | - | RDNet |
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: Yamaha DXR12mkII (measured by the manufacturer) and RCF KX 45-A (measured by the manufacturer), via spinorama.org.
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