Short answer: the Yamaha DZR315. It ranks #21 of 76 15-inch pa speakers by sound quality, rated 3.8/5, at $1,884.99. The RCF NX 915-A ranks #31, rated 3.6/5, at $1,541, $343.99 cheaper, which does not close the gap in sound quality.
What the Yamaha DZR315 does well: A powered three way 15 inch PA speaker with very high output and full DSP with a screen, able to cover a large room alone. Watch for: A 4.4dB reference band and a 7.19 directivity-index deviation mean tonal balance and off-axis consistency are uneven, and the standalone preference score is only 1.93.
The RCF NX 915-A is the deeper-bass pick. A sturdy powered 15 inch PA speaker in plywood with wide coverage, flexible rigging and onboard bass processing. Its bass reaches about 53Hz before falling 3dB, against 82.5Hz for the Yamaha DZR315. Watch for: The truncated vendor measurement does not yield a preference score, preventing a confident tonal comparison with the scored leaders.
Buy the Yamaha DZR315. It is rated higher for sound quality, and saving $343.99 with the RCF NX 915-A does not make up for the sound-quality gap.
Looking for alternatives? See the complete PA & Live Sound rankings.
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Specifications Side By Side
| Yamaha DZR315 | RCF NX 915-A | |
|---|---|---|
| Price | $1,884.99 | $1,541.00 |
| Ranked | #21 of 76 in 15-Inch PA Speakers | #31 of 76 in 15-Inch PA Speakers |
| Weight | 91.7 lbs (41.6 kg) | 53.1 lbs (24.1 kg) |
| Rigging | 16 x M10 rigging points | 6 x M10 inserts |
| Passive | No | No |
| Configuration | Active 3-way PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 15” woofer, 8” midrange, 2” compression driver | 15” woofer, compression driver |
| Frequency Response | 31Hz - 20kHz (-10dB, manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Amplifier Power | 2,000W Class-D bi-amplified | 2100W peak (1400W LF + 700W HF) |
| Maximum SPL | 143dB (manufacturer specified) | 131dB peak (manufacturer specified) |
| Coverage | 75° x 50° | 100° x 60° |
| DSP | Yes, 96kHz FIR DSP with LCD, presets, PEQ, delay | Yes, FiRPHASE and Bass Motion Control |
| Bluetooth | No | No |
| 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 |
| Bass Extension (-3dB) | 82.5Hz (measured, vendor Spinorama data) | 53Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 64.6Hz (measured, vendor Spinorama data) | - |
| Spinorama Preference Score | 1.93 | - |
| Spinorama Preference Score with Perfect Sub | 5.06 | - |
| Dimensions | - | 27.8”H x 16.5”W x 17.7”D (705 x 419.6 x 450.4 mm) |
| Inputs | - | XLR/TRS combo input and XLR output |
| Crossover Frequency | - | 1600Hz |
| Cabinet Material | - | Polyurea-coated plywood |
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