Short answer: choose between the PreSonus ULT12 and RCF ART 945-A 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 PreSonus ULT12. Very broad 110° x 50° nominal coverage can be useful in shallow rooms, and the plywood cabinet, rotatable horn and onboard mixer are practical live-sound features. Measured bass extension reaches 60Hz in the medium-quality vendor data.
The case for 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.
Important trade-offs. The 3.50 ideal-subwoofer preference score is the weakest in this 15-model group, reflecting major response/directivity irregularity. 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.
Buy the PreSonus ULT12 when its stated format, coverage, and system features fit the job better.
Buy the RCF ART 945-A 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 powered 12 inch PA speaker with an onboard mixer, rotatable horn and very wide coverage for shallow rooms.
A 15 inch PA speaker with very high output and good sound, and light for its size.
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
| PreSonus ULT12 | RCF ART 945-A | |
|---|---|---|
| Price | $999.95 Discontinued | $2,099.00 |
| Ranked | #77 of 83 in 12-Inch PA Speakers | #1 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 | 12” woofer, compression driver | 15” woofer, 1.4” exit/3” diaphragm compression driver |
| Dimensions | 25.2”H x 14”W x 13.9”D (641 x 356 x 353 mm) | 28.2”H x 16.3”W x 16.1”D (717 x 415 x 410 mm) |
| Amplifier Power | 1,300W peak / 650W continuous (1,000W / 500W LF; 300W / 150W HF, manufacturer specified) | 2100W peak (1400W LF + 700W HF) |
| Crossover Frequency | 1.6kHz (manufacturer specified) | 650Hz |
| Cabinet Material | 15mm eucalyptus plywood | PP composite |
| Rigging | M10 suspension points; two-position 35mm pole socket | M10 inserts; 35mm pole mount |
| Bass Extension (-3dB) | 60Hz (measured, vendor Spinorama data) | 50.5Hz (measured, vendor Spinorama data) |
| Coverage | 110° x 50° | 100° x 60° |
| Inputs | 2 x XLR/TRS combo | XLR and 1/4-inch jack input; XLR output |
| DSP | Yes | Yes, FiRPHASE and Bass Motion Control |
| Bluetooth | No | No |
| Spinorama Preference Score | 0.84 | 4.50 |
| Spinorama Preference Score with Perfect Sub | 3.50 | 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 |
| Maximum SPL | 135dB (1300W peak power) | 135dB peak (manufacturer specified) |
| Weight | 52 lbs (23.6 kg) | 49.4 lbs (22.4 kg) |
| Frequency Response | 55Hz - 20kHz (Manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
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: PreSonus ULT12 (measured by the manufacturer) and RCF ART 945-A (measured by an independent reviewer), via spinorama.org.
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