The FBT Promaxx 114A ranks #2 out of 33 total 15-Inch Two-Way Powered PA Speakers for sound quality. See all PA & Live Sound rankings for every top pick.
Brand: FBT
Prices on this page were last checked September 23, 2026 at 11:24 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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#2 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.
How it compares: Just above it: RCF ART 945-A. Just below it: L-Acoustics X15 HiQ.
| 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 |
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