Short answer: a tie on sound quality. Both are rated 3.3/5 (#31 and #30 of 38 15-inch pa speakers), so choose on features and fit.
What the Martin Audio CDD15 does well: A 15-inch woofer with a coaxial 1.4-inch titanium compression driver uses Coaxial Differential Dispersion, widening coverage from 60° far away to 100° up close for even level across a room. The tradeoff: A wide 4.9dB reference band and 0.701 listening-window deviation mean tonal balance is uneven, with a 1.99 standalone score.
The case for the FBT J15A: Medium-quality vendor data shows a 3.87 ideal-subwoofer preference score with 61Hz measured extension, extending the compact, wedge-capable J-series design used by the J12A and J8A to a 15-inch woofer. The tradeoff: The preference score is on the lower end for this ranking, and detailed coverage, SPL and weight figures were not confirmed in local data.
Buy the Martin Audio CDD15 or the FBT J15A on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete PA & Live Sound rankings.
Specifications Side By Side
| Martin Audio CDD15 | FBT J15A | |
|---|---|---|
| Price | - | $1,060.00 |
| Ranked | #31 of 38 in 15-Inch PA Speakers | #30 of 38 in 15-Inch PA Speakers |
| 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) | 26.1”H x 16.1”W x 15.2”D (663 x 410 x 387 mm) |
| Amplifier Power | Passive speaker; requires external amplification | 450W RMS (350W LF + 100W HF); 900W peak (700W LF + 200W HF) |
| Coverage | 100° to 60° horizontal x 60° (rotatable) | 90° x 60° |
| Impedance | 8 ohms | - |
| Cabinet Material | Birch plywood | Polypropylene |
| DSP | No (passive) | Yes |
| Weight | 57.3 lbs (26 kg) | 33.3 lbs (15.12 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) | 63Hz (measured, vendor Spinorama data) |
| Bass Extension (-10dB) | about 49.7Hz (measured, vendor Spinorama data) | - |
| Spinorama Preference Score | 1.99 | 1.16 |
| Spinorama Preference Score with Perfect Sub | 4.91 | 3.87 |
| Crossover Frequency | - | 1.8kHz (manufacturer specified) |
| Frequency Response | - | 48Hz - 20kHz (manufacturer specified) |
| Inputs | - | XLR/jack input with link output |
| Rigging | - | Two M10 fly points; pole socket |
| Maximum SPL | - | 129dB (manufacturer specified) |
Related Speaker Comparisons
More worthwhile head-to-heads for FBT J15A:
- LD Systems Stinger 15-A-G3 vs FBT J15A
- RCF ART 745-A MK4 vs FBT J15A
- FBT J15A vs Martin Audio XP15
- FBT J15A vs RCF ART 735-A MK4
- Martin Audio CDD15 vs DAS Audio Vantec 15A
Prices on this page were last checked September 26, 2026 at 11:14 PM 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
Martin Audio CDD15 Passive eBay
Pros: A 15-inch woofer with a coaxial 1.4-inch titanium compression driver uses Coaxial Differential Dispersion, widening coverage from 60° far away to 100° up close for even level across a room. Bass reaches 80Hz at -3dB and about 50Hz at -10dB, and manufacturer measurements give a 4.91 preference score with an ideal subwoofer. Measured bass extension of 80Hz (-3dB).
Cons: A wide 4.9dB reference band and 0.701 listening-window deviation mean tonal balance is uneven, with a 1.99 standalone score. It is a 26kg passive install cabinet that needs Martin Audio amplification and presets, and it is sold only through dealers.
Full Martin Audio CDD15 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | Passive speaker; requires external amplification |
| Aux Input | No |
| Bass Extension (-10dB) | about 49.7Hz (measured, vendor Spinorama data) |
| Bass Extension (-3dB) | 80Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Birch plywood |
| Coaxial Input | No |
| Configuration | Passive 2-way coaxial on-wall PA speaker |
| Coverage | 100° to 60° horizontal x 60° (rotatable) |
| DSP | No (passive) |
| Dimensions | 27”H x 17”W x 16.3”D (685 x 432 x 413 mm) |
| Drivers | 15” woofer with coaxial 1.4” exit titanium compression driver (Coaxial Differential Dispersion) |
| Guitar Input | No |
| HDMI Input | No |
| Impedance | 8 ohms |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 1.99 |
| Spinorama Preference Score with Perfect Sub | 4.91 |
| TRS Input | No |
| USB Input | No |
| Weight | 57.3 lbs (26 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
FBT J15A: $1,060.00 B&H Photo Video eBay
Pros: Medium-quality vendor data shows a 3.87 ideal-subwoofer preference score with 61Hz measured extension, extending the compact, wedge-capable J-series design used by the J12A and J8A to a 15-inch woofer. Measured bass extension of 63Hz (-3dB).
Cons: The preference score is on the lower end for this ranking, and detailed coverage, SPL and weight figures were not confirmed in local data.
Full FBT J15A review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 450W RMS (350W LF + 100W HF); 900W peak (700W LF + 200W HF) |
| Aux Input | No |
| Bass Extension (-3dB) | 63Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Polypropylene |
| Coaxial Input | No |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 90° x 60° |
| Crossover Frequency | 1.8kHz (manufacturer specified) |
| DSP | Yes |
| Dimensions | 26.1”H x 16.1”W x 15.2”D (663 x 410 x 387 mm) |
| Drivers | 15” woofer, compression driver |
| Frequency Response | 48Hz - 20kHz (manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Inputs | XLR/jack input with link output |
| Maximum SPL | 129dB (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Rigging | Two M10 fly points; pole socket |
| Spinorama Preference Score | 1.16 |
| Spinorama Preference Score with Perfect Sub | 3.87 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 33.3 lbs (15.12 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons