Short answer: these RCF KX 08-A and RCF ART 708-A MK4 alternatives share a brand and size class, but their coverage, driver architecture, cabinet format, processing, and output priorities can make them fit very different jobs. The RCF ART 708-A MK4 is discontinued; its replacement is the RCF ART 708-A MK5.
Why choose the RCF KX 08-A. The entry point into RCF’s flagship KX point-source range, with a 2000W amplifier, a PKX-dome neodymium compression driver, RDNet remote control and a rotatable 90° x 70° horn in a manageable 27.6 lbs (12.5 kg) cabinet.
Why choose the RCF ART 708-A MK4. The 22.9 lbs (10.4 kg) cabinet combines 127dB claimed peak output, a broad horn and RCF’s FiRPHASE processing in a straightforward, affordable package for an 8-inch box.
What to weigh before buying. The local measurement is truncated and cannot produce a preference score, and pricing/retail availability are not yet well established for this model. The low-quality vendor measurement is truncated and cannot produce a reliable preference score.
Buy the RCF KX 08-A when its stated coverage, output, processing, and deployment format best match the job.
Buy the RCF ART 708-A MK4 when its stated strengths are the better match for the room and the rest of the PA.
Looking for alternatives? See the complete PA & Live Sound rankings.
A powerful 8 inch point source PA speaker with remote network control and a rotatable horn in a manageable cabinet.
A discontinued, affordable powered 8 inch PA speaker with a broad horn and simple setup.
Prices on this page were last checked October 23, 2026 at 8:27 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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Specifications Side By Side
| RCF KX 08-A | RCF ART 708-A MK4 | |
|---|---|---|
| Price | $2,308.50 | $525.00 Discontinued |
| Ranked | #8 of 47 in 8-Inch PA Speakers | #37 of 47 in 8-Inch PA Speakers |
| Passive | No | No |
| Configuration | Active 2-way bass-reflex point-source PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 8” woofer, 1.75” voice-coil neodymium compression driver | 8” woofer, 1” compression driver |
| Frequency Response | 65Hz - 20kHz (manufacturer specified) | 60Hz - 20kHz (manufacturer specified) |
| Dimensions | 17.7”H x 10.2”W x 11.2”D (450 x 260 x 285.4 mm) | 18.9”H x 11.5”W x 10.9”D (480 x 291 x 276 mm) |
| Coverage | 90° x 70°, rotatable | 100° x 70° |
| Maximum SPL | 128dB peak (manufacturer specified) | 127dB peak (manufacturer specified) |
| Inputs | XLR and EtherCON RDNet input/link | XLR/jack combo input; XLR output |
| Amplifier Power | 2000W peak (1400W LF + 600W HF) | 800W peak / 400W RMS (600W LF + 200W HF peak, manufacturer specified) |
| Crossover Frequency | 1400Hz | 1.6kHz (manufacturer specified) |
| Cabinet Material | Baltic birch plywood | Polypropylene composite |
| Rigging | M10 inserts; 35mm pole mount | Two M10 fly points; 35mm pole socket |
| Network Control | RDNet | - |
| Bass Extension (-3dB) | 82.5Hz (measured, vendor Spinorama data) | 75Hz (measured, vendor Spinorama data) |
| DSP | Yes, RDNet remote management | Yes, FiRPHASE, EQ, limiting and protection |
| Bluetooth | No | No |
| Weight | 24.3 lbs (11 kg) | 22.9 lbs (10.4 kg) |
| XLR Input | Yes | 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 |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared.
Measurement data: RCF KX 08-A (measured by the manufacturer) and RCF ART 708-A MK4 (measured by the manufacturer), via spinorama.org.
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