Short answer: choose between the RCF ART 745-A MK4 and Martin Audio XP15 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 RCF ART 745-A MK4. The largest ART7 compression driver, 133dB claimed peak and a light 18.8kg enclosure give this discontinued flagship useful vocal headroom for a 15-inch box.
The case for the Martin Audio XP15. Medium-quality vendor data returns a 4.12 ideal-subwoofer preference score with 48Hz measured extension, extending the XP12’s rotatable horn and Class-D amplification to a 15-inch cabinet.
Important trade-offs. 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. Martin Audio has a smaller North American dealer network than JBL, Yamaha or QSC, and pricing is not yet well established for this model.
Buy the RCF ART 745-A MK4 when its stated format, coverage, and system features fit the job better.
Buy the Martin Audio XP15 when its stated output, control, and deployment strengths better match the system.
The Martin Audio XP15 is not a sound-quality pick. It sits near the bottom of the 29 15-inch two-way powered pa speakers; there are better options higher up.
Specifications Side By Side
| RCF ART 745-A MK4 | Martin Audio XP15 | |
|---|---|---|
| Price | $1,699.00 | - |
| Ranked | #21 of 29 in 15-Inch Two-Way Powered PA Speakers | #23 of 29 in 15-Inch Two-Way Powered PA Speakers |
| 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, compression driver |
| Frequency Response | 45Hz - 20kHz (manufacturer specified) | 55Hz - 20kHz (±3dB, manufacturer specified); 45Hz (-10dB) |
| Dimensions | 27.9"H x 17.4"W x 15.2"D (708 x 442 x 387 mm) | 27.2"H x 16.8"W x 16"D (690 x 427 x 407 mm) |
| Inputs | XLR/jack combo input; XLR output | Two female XLR/quarter-inch combo inputs; male XLR mix output |
| Amplifier Power | 1,400W peak / 700W RMS (1,000W LF + 400W HF peak, manufacturer specified) | 1,300W peak (1,000W LF + 300W HF, manufacturer specified) |
| Crossover Frequency | 650Hz (manufacturer specified) | 2kHz active (24dB/octave) |
| Cabinet Material | Polypropylene composite | Multi-angle birch/poplar plywood |
| Rigging | M10 fly points; pole mount | Thirteen M8 inserts; pole-mount socket |
| Coverage | 100° x 60° | 80° x 50°, rotatable |
| Maximum SPL | 133dB peak (manufacturer specified) | - |
| Bass Extension (-3dB) | 65Hz (measured, vendor Spinorama data) | 54.5Hz (measured, vendor Spinorama data) |
| DSP | Yes, FiRPHASE, EQ, limiting and protection | Yes |
| Bluetooth | No | No |
| Weight | 41.4 lbs / 18.8 kg | - |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Vue Audiotechnik A-15 vs LD Systems Stinger 15-A-G3
- RCF ART 735-A MK4 vs DAS Audio Vantec 15A
- RCF ART 745-A MK5 vs LD Systems Stinger 15-A-G3
- Martin Audio XP15 vs DAS Audio Vantec 15A
- RCF ART 745-A MK4 vs FBT J15A
Prices on this page were last checked September 7, 2026 at 7:47 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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The Two Speakers In Full
RCF ART 745-A MK4: $1,699.00 Amazon B&H Photo Video Guitar Center eBay
Pros: The largest ART7 compression driver, 133dB claimed peak and a light 18.8kg enclosure give this discontinued flagship useful vocal headroom for a 15-inch box.
Cons: 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.
Full RCF ART 745-A MK4 review and specifications →
| Amplifier Power | 1,400W peak / 700W RMS (1,000W LF + 400W HF peak, manufacturer specified) |
|---|---|
| Bass Extension (-3dB) | 65Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Polypropylene composite |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 100° x 60° |
| Crossover Frequency | 650Hz (manufacturer specified) |
| DSP | Yes, FiRPHASE, EQ, limiting and protection |
| Dimensions | 27.9"H x 17.4"W x 15.2"D (708 x 442 x 387 mm) |
| Drivers | 15" woofer, 1.4" exit/3" diaphragm compression driver |
| Frequency Response | 45Hz - 20kHz (manufacturer specified) |
| Inputs | XLR/jack combo input; XLR output |
| Maximum SPL | 133dB peak (manufacturer specified) |
| Rigging | M10 fly points; pole mount |
| Weight | 41.4 lbs / 18.8 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Martin Audio XP15 eBay
Pros: Medium-quality vendor data returns a 4.12 ideal-subwoofer preference score with 48Hz measured extension, extending the XP12’s rotatable horn and Class-D amplification to a 15-inch cabinet.
Cons: Martin Audio has a smaller North American dealer network than JBL, Yamaha or QSC, and pricing is not yet well established for this model.
Full Martin Audio XP15 review and specifications →
| Amplifier Power | 1,300W peak (1,000W LF + 300W HF, manufacturer specified) |
|---|---|
| Bass Extension (-3dB) | 54.5Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Multi-angle birch/poplar plywood |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 80° x 50°, rotatable |
| Crossover Frequency | 2kHz active (24dB/octave) |
| DSP | Yes |
| Dimensions | 27.2"H x 16.8"W x 16"D (690 x 427 x 407 mm) |
| Drivers | 15" woofer, compression driver |
| Frequency Response | 55Hz - 20kHz (±3dB, manufacturer specified); 45Hz (-10dB) |
| Inputs | Two female XLR/quarter-inch combo inputs; male XLR mix output |
| Rigging | Thirteen M8 inserts; pole-mount socket |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons