Short answer: choose between the JBL PRX912 and RCF ART 712-A MK4 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 RCF ART 712-A MK4 is discontinued; its replacement is the RCF ART 712-A MK5.
Why choose the JBL PRX912. High-quality manufacturer Spinorama data, 132dB claimed peak output, app control and unusually deep onboard processing make this one of the most versatile choices. The measured 54Hz bass extension is useful for speech and lighter music without a subwoofer.
Why choose the RCF ART 712-A MK4. The 39.2 lbs (17.8 kg) cabinet combines 129dB claimed peak output, a broad horn and RCF’s FiRPHASE processing in a straightforward package. Its measured response extends to roughly 65Hz before the first major roll-off.
What to weigh before buying. Its 6.05 ideal-subwoofer preference score trails the QSC and FBT ProMaxX, with less even sound-power behavior in the supplied data. At 43 lbs (19.5 kg) it is not especially light, and Bluetooth is for control rather than audio streaming. The low-quality vendor measurement is truncated and cannot produce a reliable preference score.
Buy the JBL PRX912 when its stated coverage, output, processing, and installation format fit the job better.
Buy the RCF ART 712-A MK4 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 versatile, loud 12 inch powered PA speaker with app control, deep onboard processing and enough bass for speech and lighter music.
A straightforward powered 12 inch PA speaker that is easy to carry, with loud output and a broad horn.
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
| JBL PRX912 | RCF ART 712-A MK4 | |
|---|---|---|
| Price | $899.00 | $509.00 Discontinued |
| Ranked | #6 of 83 in 12-Inch PA Speakers | #65 of 83 in 12-Inch PA Speakers |
| Passive | No | No |
| Configuration | Active 2-way bass-reflex PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 12” woofer, 1.5” compression driver | 12” woofer, 1” compression driver |
| Frequency Response | 50Hz - 20kHz (-10dB, manufacturer specified) | 50Hz - 20kHz (manufacturer specified) |
| Bass Extension (-3dB) | 54Hz (measured, vendor Spinorama data) | 65Hz (measured, vendor Spinorama data) |
| Coverage | 90° x 50° | 90° x 60° |
| Maximum SPL | 132dB peak (manufacturer specified) | 129dB peak (manufacturer specified) |
| Inputs | 2 x XLR/TRS combo, 3.5mm aux | XLR/TRS combo input and XLR link |
| App | Yes (JBL Pro Connect) | - |
| DSP | Yes | Yes, FiRPHASE, EQ, limiting and protection |
| Bluetooth | Control only; no Bluetooth audio | No |
| Weight | 43 lbs (19.5 kg) | 39.2 lbs (17.8 kg) |
| Dimensions | 25”H x 15.5”W x 13.1”D (636 x 394 x 332 mm) | 25.1”H x 15.2”W x 14.3”D (637 x 387 x 363 mm) |
| Amplifier Power | 2000W peak / 1000W RMS | 1,400W peak / 700W RMS (1,000W LF + 400W HF peak, manufacturer specified) |
| Crossover Frequency | 1920Hz | 1.6kHz (manufacturer specified) |
| Cabinet Material | Polypropylene/talc composite | Polypropylene composite |
| Rigging | 6 x M10 suspension points; dual 36mm pole sockets | Two M10 fly points; pole mount |
| Spinorama Preference Score | 3.57 | - |
| Spinorama Preference Score with Perfect Sub | 6.05 | - |
| 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 | Yes | 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: JBL PRX912 (measured by the manufacturer) and RCF ART 712-A MK4 (measured by the manufacturer), via spinorama.org.
Related Speaker Comparisons
How JBL PRX912 compares with other leading options: