Short answer: the KV2 Audio EX15. It ranks #7 of 38 15-inch pa speakers by sound quality (rated 4.0/5); the FBT Promaxx 114A ranks #9 (rated 3.9/5).
The case for the KV2 Audio EX15: Medium-quality vendor data gives it a 4.83 ideal-subwoofer preference score with 42Hz measured extension, the deepest bass reach of any 15-inch box in this ranking. The catch: At a roughly $6000 asking price this specialist box is far less accessible than the mainstream leaders, and user controls are comparatively spare without an onboard mixer or app control.
What the FBT Promaxx 114A does well: Vendor Spinorama data gives preference scores of 4.09 standalone and 7.12 with an ideal subwoofer. The catch: Measured bass reaches only about 88Hz (-3dB) with a 73Hz ideal-subwoofer extension point, so it does not go as deep as the woofer size suggests.
Buy the KV2 Audio EX15. It is rated higher for sound quality than the FBT Promaxx 114A.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
Specifications Side By Side
| KV2 Audio EX15 | FBT Promaxx 114A | |
|---|---|---|
| Price | $6,000.00 | - |
| Ranked | #7 of 38 in 15-Inch PA Speakers | #9 of 38 in 15-Inch PA Speakers |
| Configuration | Active 2-way bass-reflex PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 15” neodymium woofer, 1.4” exit/3” diaphragm compression driver | 14” neodymium woofer with 3” voice coil, 1.4” compression driver |
| Frequency Response | 44Hz - 18kHz (-3dB, manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Dimensions | 27.6”H x 17.7”W x 17.7”D (700 x 450 x 450 mm) | - |
| Crossover Frequency | 500Hz / 2.7kHz (manufacturer specified) | - |
| Amplifier Power | 1,000W continuous (850W LF + 100W mid + 50W HF, manufacturer specified) | 700W RMS Class D (LF) plus 200W RMS Class H/AB (HF) |
| Inputs | Balanced female XLR input; male XLR through output | - |
| Cabinet Material | Baltic birch plywood | Polypropylene |
| Bass Extension (-3dB) | 50Hz (measured, vendor Spinorama data) | 88Hz (measured, vendor Spinorama data) |
| DSP | Integrated crossover, phase alignment, EQ and protection | Yes |
| Bluetooth | No | No |
| Spinorama Preference Score | 2.82 | 4.09 |
| Spinorama Preference Score with Perfect Sub | 4.83 | 7.12 |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| 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 |
| Maximum SPL | 129dB (system max long-term SPL, manufacturer specified) | 135.5dB peak (manufacturer specified) |
| Coverage | 80° x 60° (mid-range horn; coaxial HF/LF section is wide dispersion) | 90° x 60° |
| Rigging | Two side-mounted M10 hang points, compatible with vertical bracket or eyebolts | Three built-in monitor angles (12°, 40°, 55°) |
| Weight | 94.8 lbs (43 kg) | 41.4 lbs (18.8 kg) |
Related Speaker Comparisons
How KV2 Audio EX15 compares with other leading options:
- RCF KX 45-A vs KV2 Audio EX15
- RCF NX 945-A vs KV2 Audio EX15
- KV2 Audio EX15 vs Yamaha DZR15
- KV2 Audio EX15 vs JBL PRX915
- FBT Promaxx 114A vs RCF ART 935-A
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
KV2 Audio EX15: $6,000.00 eBay
Pros: Medium-quality vendor data gives it a 4.83 ideal-subwoofer preference score with 42Hz measured extension, the deepest bass reach of any 15-inch box in this ranking. Its 3-inch-diaphragm compression driver and integrated DSP target vocal clarity and controlled throw. Measured bass extension of 50Hz (-3dB).
Cons: At a roughly $6000 asking price this specialist box is far less accessible than the mainstream leaders, and user controls are comparatively spare without an onboard mixer or app control.
Full KV2 Audio EX15 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 1,000W continuous (850W LF + 100W mid + 50W HF, manufacturer specified) |
| Aux Input | No |
| Bass Extension (-3dB) | 50Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Baltic birch plywood |
| Coaxial Input | No |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 80° x 60° (mid-range horn; coaxial HF/LF section is wide dispersion) |
| Crossover Frequency | 500Hz / 2.7kHz (manufacturer specified) |
| DSP | Integrated crossover, phase alignment, EQ and protection |
| Dimensions | 27.6”H x 17.7”W x 17.7”D (700 x 450 x 450 mm) |
| Drivers | 15” neodymium woofer, 1.4” exit/3” diaphragm compression driver |
| Frequency Response | 44Hz - 18kHz (-3dB, manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Inputs | Balanced female XLR input; male XLR through output |
| Maximum SPL | 129dB (system max long-term SPL, manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Rigging | Two side-mounted M10 hang points, compatible with vertical bracket or eyebolts |
| Spinorama Preference Score | 2.82 |
| Spinorama Preference Score with Perfect Sub | 4.83 |
| TRS Input | No |
| USB Input | No |
| Weight | 94.8 lbs (43 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
FBT Promaxx 114A Full Compass eBay
Pros: Vendor Spinorama data gives preference scores of 4.09 standalone and 7.12 with an ideal subwoofer. The 14-inch woofer and 700W amplifier claim 135.5dB peak output from an 18.8kg polypropylene cabinet, and three built-in monitor angles cover floor use. Measured bass extension of 88Hz (-3dB).
Cons: Measured bass reaches only about 88Hz (-3dB) with a 73Hz ideal-subwoofer extension point, so it does not go as deep as the woofer size suggests. Listening-window narrow-band deviation is 0.393, less even than the best boxes in this ranking, and the non-standard 14-inch size means fewer matching accessories.
Full FBT Promaxx 114A review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 700W RMS Class D (LF) plus 200W RMS Class H/AB (HF) |
| Aux Input | No |
| Bass Extension (-3dB) | 88Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Polypropylene |
| Coaxial Input | No |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 90° x 60° |
| DSP | Yes |
| Drivers | 14” neodymium woofer with 3” voice coil, 1.4” compression driver |
| Frequency Response | 45Hz - 20kHz (manufacturer specified) |
| Guitar Input | No |
| HDMI Input | No |
| Maximum SPL | 135.5dB peak (manufacturer specified) |
| Microphone Input | No |
| Optical Input | No |
| RCA Input | No |
| Rigging | Three built-in monitor angles (12°, 40°, 55°) |
| Spinorama Preference Score | 4.09 |
| Spinorama Preference Score with Perfect Sub | 7.12 |
| TRS Input | No |
| USB Input | No |
| Weight | 41.4 lbs (18.8 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons