Short answer: choose between the JBL PRX915 and RCF NX 915-A 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.
Why choose the JBL PRX915. High-quality vendor data shows a 4.77 ideal-subwoofer preference score with 51Hz measured extension, backed by JBL’s extensive service network and 12-band parametric EQ with dbx DriveRack feedback suppression carried over from the PRX912.
Why choose the RCF NX 915-A. The plywood enclosure, FiRPHASE/Bass Motion Control processing and flexible rigging make it a sturdier systems alternative to the ART 715-A MK5, with a wide 100° x 60° pattern and 131dB claimed peak.
What to weigh before buying. Its measured preference trails the 12-inch PRX912, and at 53.1 lbs (24.1 kg) it is meaningfully heavier to carry to a gig than the smaller model. The truncated vendor measurement does not yield a preference score, preventing a confident tonal comparison with the scored leaders. At 53.1 lbs (24.1 kg) it is notably heavier than the ART-series alternatives.
Buy the JBL PRX915 when its stated coverage, output, processing, and installation format fit the job better.
Buy the RCF NX 915-A when its stated strengths better suit the venue and the rest of the system.
Want more options? Browse the full PA & Live Sound rankings.
A powered 15 inch PA speaker with good sound, fairly deep bass, app control and built in EQ and feedback suppression.
A sturdy powered 15 inch PA speaker in plywood with wide coverage, flexible rigging and onboard bass processing.
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 PRX915 | RCF NX 915-A | |
|---|---|---|
| Price | $999.00 | $1,541.00 |
| Ranked | #15 of 76 in 15-Inch PA Speakers | #31 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, 1.5” compression driver | 15” woofer, compression driver |
| Frequency Response | 48Hz - 19kHz (-10dB, manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Dimensions | 28.2”H x 18.3”W x 15.1”D (717 x 465 x 383 mm) | 27.8”H x 16.5”W x 17.7”D (705 x 419.6 x 450.4 mm) |
| Maximum SPL | 133dB peak (manufacturer specified) | 131dB peak (manufacturer specified) |
| Inputs | 2 x XLR/TRS combo, 3.5mm aux; 2 x XLR thru and XLR mix outputs | XLR/TRS combo input and XLR output |
| Amplifier Power | 2000W peak / 1000W RMS | 2100W peak (1400W LF + 700W HF) |
| Crossover Frequency | 1920Hz | 1600Hz |
| Cabinet Material | Polypropylene/talc composite | Polyurea-coated plywood |
| Rigging | 6 x M10 suspension points; dual 36mm pole sockets | 6 x M10 inserts |
| Coverage | 90° x 50° | 100° x 60° |
| Bass Extension (-3dB) | 58Hz (measured, vendor Spinorama data) | 53Hz (measured, vendor Spinorama data) |
| DSP | Yes, 12-band parametric EQ and dbx DriveRack | Yes, FiRPHASE and Bass Motion Control |
| Bluetooth | Yes, control via JBL Pro Connect app | No |
| Weight | 53.1 lbs (24.1 kg) | 53.1 lbs (24.1 kg) |
| Spinorama Preference Score | 2.40 | - |
| Spinorama Preference Score with Perfect Sub | 4.77 | - |
| 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 PRX915 (measured by the manufacturer) and RCF NX 915-A (measured by the manufacturer), via spinorama.org.
Related Speaker Comparisons
More worthwhile head-to-heads for JBL PRX915: