Short answer: these RCF NX 945-A and RCF ART 745-A MK5 alternatives share a brand and size class, but their coverage, driver architecture, cabinet format, processing, and output priorities can make them fit very different jobs.
Why choose the RCF NX 945-A. The top NX-series 15-inch box pairs a plywood cabinet with a 135dB claimed peak, the highest in the NX range, and a wide 100° x 70° pattern. RCF’s FiRPHASE and Bass Motion Control processing carry over from the smaller NX models.
Why choose the RCF ART 745-A MK5. The top of the ART7 range pairs 133dB claimed peak output with a light 41.4 lbs (18.8 kg) enclosure, RCF’s largest ART7-tier compression driver and FiRPHASE processing carried over from the smaller 712/732-A MK5 models.
What to weigh before buying. The measurement is truncated and does not produce a preference score, so its tonal position relies on published engineering rather than a confirmed result. At 60.2 lbs (27.3 kg) it is heavier than the ART 945-A alternative. The low-quality vendor measurement is truncated and cannot generate a preference score, so its tonal position relies on published engineering rather than a confirmed result.
Buy the RCF NX 945-A when its stated coverage, output, processing, and deployment format best match the job.
Buy the RCF ART 745-A MK5 when its stated strengths are the better match for the room and the rest of the PA.
Want more options? Browse the full PA & Live Sound rankings.
A loud powered 15 inch PA speaker in a plywood cabinet with wide coverage and onboard processing that keeps bass tidy.
A light powered 15 inch PA speaker with loud peaks and a large compression driver for strong vocals.
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 NX 945-A | RCF ART 745-A MK5 | |
|---|---|---|
| Price | $2,299.00 | $1,149.00 |
| Ranked | #8 of 76 in 15-Inch PA Speakers | #35 of 76 in 15-Inch PA Speakers |
| Passive | No | No |
| Configuration | Active 2-way bass-reflex PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 15” woofer, compression driver | 15” woofer, 1.4” exit/3” diaphragm compression driver |
| Frequency Response | 45Hz - 20kHz (manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Dimensions | 27.8”H x 16.5”W x 17.8”D (705 x 420 x 451 mm) | 27.9”H x 17.2”W x 15.3”D (708 x 437 x 389 mm) |
| Coverage | 100° x 70° | 90° x 60° |
| Maximum SPL | 135dB peak (manufacturer specified) | 133dB peak (manufacturer specified) |
| Inputs | XLR/TRS combo input and XLR output | XLR and 1/4-inch jack input; XLR output |
| Amplifier Power | 2100W peak (1400W LF + 700W HF) | 1400W peak (1000W LF + 400W HF) |
| Crossover Frequency | 650Hz | 650Hz |
| Cabinet Material | Plywood | PP composite |
| Rigging | M10 and quick-lock rigging; 35mm pole mount | 2 x M10 inserts; 35mm pole mount |
| Bass Extension (-3dB) | 65Hz (measured, vendor Spinorama data) | 65Hz (measured, vendor Spinorama data) |
| DSP | Yes, FiRPHASE and Bass Motion Control | Yes, FiRPHASE, EQ, limiting and protection |
| Bluetooth | No | No |
| Weight | 60.2 lbs (27.3 kg) | 41.4 lbs (18.8 kg) |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | Yes | Yes |
| 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 |
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 NX 945-A (measured by the manufacturer) and RCF ART 745-A MK5 (measured by the manufacturer), via spinorama.org.
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