Short answer: these RCF ART 945-A and RCF ART 745-A MK4 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. The RCF ART 745-A MK4 is discontinued; its replacement is the RCF ART 745-A MK5.
Why choose the RCF ART 945-A. This is the strongest-measuring 15-inch RCF here: medium-quality vendor data produces a 6.69 ideal-subwoofer preference score with roughly 50Hz extension. The top-tier compression driver and 41.4 lbs (18.8 kg) enclosure combine unusually high output with easy portability for a 15-inch box.
Why choose the RCF ART 745-A MK4. The largest ART7 compression driver, 133dB claimed peak and a light 41.4 lbs (18.8 kg) enclosure give this discontinued flagship useful vocal headroom for a 15-inch box.
What to weigh before buying. Pricing and wide retail distribution are not yet well established for this model, and the RCF ART9 range above the 912/932-A pair has a shorter market track record. Coverage and full connector details were not confirmed in local data. The low-quality vendor data is truncated and does not yield a preference score. It is discontinued and is eclipsed by the better-supported ART 745-A MK5.
Buy the RCF ART 945-A when its stated coverage, output, processing, and deployment format best match the job.
Buy the RCF ART 745-A MK4 when its stated strengths are the better match for the room and the rest of the PA.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
A 15 inch PA speaker with very high output and good sound, and light for its size.
A discontinued 15 inch powered PA speaker with a large compression driver for strong vocal headroom in a fairly light cabinet.
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 ART 945-A | RCF ART 745-A MK4 | |
|---|---|---|
| Price | $2,099.00 | $1,699.00 Discontinued |
| Ranked | #1 of 76 in 15-Inch PA Speakers | #44 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, 1.4” exit/3” diaphragm compression driver | 15” woofer, 1.4” exit/3” diaphragm compression driver |
| Frequency Response | 45Hz - 20kHz (manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Dimensions | 28.2”H x 16.3”W x 16.1”D (717 x 415 x 410 mm) | 27.9”H x 17.4”W x 15.2”D (708 x 442 x 387 mm) |
| Coverage | 100° x 60° | 100° x 60° |
| Maximum SPL | 135dB peak (manufacturer specified) | 133dB peak (manufacturer specified) |
| Inputs | XLR and 1/4-inch jack input; XLR output | XLR/jack combo input; XLR output |
| Amplifier Power | 2100W peak (1400W LF + 700W HF) | 1,400W peak / 700W RMS (1,000W LF + 400W HF peak, manufacturer specified) |
| Crossover Frequency | 650Hz | 650Hz (manufacturer specified) |
| Cabinet Material | PP composite | Polypropylene composite |
| Rigging | M10 inserts; 35mm pole mount | M10 fly points; pole mount |
| Bass Extension (-3dB) | 50.5Hz (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 | 49.4 lbs (22.4 kg) | 41.4 lbs (18.8 kg) |
| Spinorama Preference Score | 4.50 | - |
| Spinorama Preference Score with Perfect Sub | 6.69 | - |
| 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. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: RCF ART 945-A (measured by an independent reviewer) and RCF ART 745-A MK4 (measured by the manufacturer), via spinorama.org.
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