Short answer: the RCF ART 745-A MK5 for most buyers, the NX 915-A if you specifically need its plywood build and rigging. These rank #31 and #35 out of 76 15-inch powered PA speakers, separated by a $392 price gap.
Neither has a confirmed preference score. The NX 915-A’s truncated vendor measurement does not yield a preference score, preventing a confident tonal comparison with the scored leaders. The ART 745-A MK5’s low-quality vendor measurement is also truncated and cannot generate a preference score, so both boxes’ tonal position relies on published engineering rather than confirmed results.
Build and rigging are the real differentiators. The NX 915-A uses a polyurea-coated plywood enclosure with FiRPHASE/Bass Motion Control processing and flexible rigging, positioned as a sturdier systems alternative to the ART line, with a wide 100 degree x 60 degree pattern and 131dB claimed peak. Its own review notes it is notably heavier than the ART-series alternatives at 53.1 lbs (24.1 kg). The ART 745-A MK5 uses a polypropylene composite cabinet at a much lighter 41.4 lbs (18.8 kg), with a 90 degree x 60 degree pattern and a slightly higher 133dB claimed peak, carrying the same FiRPHASE processing down from the top of the ART7 range.
Price favors the ART. At $1,149 the ART 745-A MK5 undercuts the NX 915-A’s $1,541, while sharing the same RCF electronics heritage.
Buy the RCF ART 745-A MK5 for a lighter cabinet, higher claimed peak, and lower price with the same FiRPHASE processing.
Buy the RCF NX 915-A if you need its sturdier plywood construction and flexible rigging for a fixed or touring system.
Want more options? Browse the full PA & Live Sound rankings.
A sturdy powered 15 inch PA speaker in plywood with wide coverage, flexible rigging and onboard bass processing.
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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| RCF NX 915-A | RCF ART 745-A MK5 | |
|---|---|---|
| Price | $1,541.00 | $1,149.00 |
| Ranked | #31 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 17.7”D (705 x 419.6 x 450.4 mm) | 27.9”H x 17.2”W x 15.3”D (708 x 437 x 389 mm) |
| Coverage | 100° x 60° | 90° x 60° |
| Maximum SPL | 131dB 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 | 1600Hz | 650Hz |
| Cabinet Material | Polyurea-coated plywood | PP composite |
| Rigging | 6 x M10 inserts | 2 x M10 inserts; 35mm pole mount |
| Bass Extension (-3dB) | 53Hz (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 | 53.1 lbs (24.1 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 915-A (measured by the manufacturer) and RCF ART 745-A MK5 (measured by the manufacturer), via spinorama.org.
Related Speaker Comparisons
More top alternatives to RCF NX 915-A: