Short answer: the Martin Audio CDD15. It ranks #47 of 76 15-inch pa speakers by sound quality, rated 3.3/5, at $2,500. The Martin Audio XP15 ranks #50, rated 3.2/5, at $1,950, $550 cheaper, not enough of a saving to outweigh the sound-quality gap.
The case for the Martin Audio CDD15: A passive 15 inch coaxial installation speaker designed to keep the level even from the front row to the back of a room. The catch: A wide 4.9dB reference band and 0.701 listening-window deviation mean tonal balance is uneven, with a 1.99 standalone score.
The Martin Audio XP15 is the deeper-bass pick. A powered 15 inch PA speaker with a rotatable horn, two combo inputs and fairly deep bass for gigs and events. Its bass reaches about 54.5Hz before falling 3dB, against 80Hz for the Martin Audio CDD15. The catch: 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 Martin Audio CDD15. It is rated higher for sound quality, and the $550 you would save on the Martin Audio XP15 does not close the gap.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
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Specifications Side By Side
| Martin Audio CDD15 | Martin Audio XP15 | |
|---|---|---|
| Price | $2,500 Passive | $1,950 |
| Ranked | #47 of 76 in 15-Inch PA Speakers | #50 of 76 in 15-Inch PA Speakers |
| Rigging | 10 x M8 fly points | Thirteen M8 inserts; pole-mount socket |
| Maximum SPL | 132dB peak (manufacturer specified) | 131dB peak / 125dB continuous |
| Passive | Yes | No |
| Configuration | Passive 2-way coaxial on-wall PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 15” woofer with coaxial 1.4” exit titanium compression driver (Coaxial Differential Dispersion) | 15” woofer, compression driver |
| Dimensions | 27”H x 17”W x 16.3”D (685 x 432 x 413 mm) | 27.2”H x 16.8”W x 16”D (690 x 427 x 407 mm) |
| Amplifier Power | Passive speaker; requires external amplification | 1,300W peak (1,000W LF + 300W HF, manufacturer specified) |
| Coverage | 100° to 60° horizontal x 60° (rotatable) | 80° x 50°, rotatable |
| Impedance | 8 ohms | - |
| Cabinet Material | Birch plywood | Multi-angle birch/poplar plywood |
| DSP | No (passive) | Yes |
| Weight | 57.3 lbs (26 kg) | 57.3 lbs (26 kg) |
| Bluetooth | No | No |
| XLR Input | No | Yes |
| RCA Input | No | No |
| TRS Input | No | 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) | 80Hz (measured, vendor Spinorama data) | 54.5Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 49.7Hz (measured, vendor Spinorama data) | - |
| Spinorama Preference Score | 1.99 | 2.44 |
| Spinorama Preference Score with Perfect Sub | 4.91 | 4.71 |
| Frequency Response | - | 55Hz - 20kHz (±3dB, manufacturer specified); 45Hz (-10dB) |
| Inputs | - | Two female XLR/quarter-inch combo inputs; male XLR mix output |
| Crossover Frequency | - | 2kHz active (24dB/octave) |
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