Short answer: choose between the QSC K8.2 and RCF ART 708-A MK4 for the requirements of the venue and system, not from rank alone. In this size class, coverage, bass extension, output capability, DSP, cabinet construction, and service support often decide the better fit. The RCF ART 708-A MK4 is discontinued; its replacement is the RCF ART 708-A MK5.
Why choose the QSC K8.2. This is the standout measured result in this ranking: low-quality vendor data still returns a 7.74 ideal-subwoofer preference score, continuing the K.2 series’ strong showing at every driver size. Extensive onboard DSP, a titanium compression driver and QSC’s long market track record make it an unusually safe general-purpose 8-inch pick.
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 underlying Spinorama source is low quality, so its apparent measured lead deserves some caution. An 8-inch woofer means a subwoofer partner matters even more than with the larger K.2 models. The low-quality vendor measurement is truncated and cannot produce a reliable preference score.
Buy the QSC K8.2 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 superb 8 inch PA speaker, with excellent sound and flexible built in processing in a compact box.
A discontinued, affordable powered 8 inch PA speaker with a broad horn and simple setup.
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Specifications Side By Side
| QSC K8.2 | RCF ART 708-A MK4 | |
|---|---|---|
| Price | $749.99 | $525.00 Discontinued |
| Ranked | #1 of 47 in 8-Inch PA Speakers | #37 of 47 in 8-Inch PA Speakers |
| Passive | No | No |
| Configuration | Active 2-way bass-reflex PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 8” woofer, 1.4” titanium compression driver | 8” woofer, 1” compression driver |
| Frequency Response | 59Hz - 20kHz (-6dB, manufacturer specified) | 60Hz - 20kHz (manufacturer specified) |
| Dimensions | 17.7”H x 11”W x 10.6”D (449 x 280 x 269 mm) | 18.9”H x 11.5”W x 10.9”D (480 x 291 x 276 mm) |
| Coverage | 105° conical | 100° x 70° |
| Maximum SPL | 128dB peak (manufacturer specified) | 127dB peak (manufacturer specified) |
| Inputs | 2 x XLR/TRS combo, 3.5mm aux; 2 x XLR thru and XLR mix outputs | XLR/jack combo input; XLR output |
| Amplifier Power | 2025W peak (1800W LF + 225W HF) | 800W peak / 400W RMS (600W LF + 200W HF peak, manufacturer specified) |
| Cabinet Material | Impact-resistant ABS | Polypropylene composite |
| Rigging | 2 x M10 inserts and pull-back point; 35mm pole mount | Two M10 fly points; 35mm pole socket |
| Bass Extension (-3dB) | 58Hz (measured, vendor Spinorama data) | 75Hz (measured, vendor Spinorama data) |
| DSP | Yes | Yes, FiRPHASE, EQ, limiting and protection |
| Bluetooth | No | No |
| Weight | 26.9 lbs (12.2 kg) | 22.9 lbs (10.4 kg) |
| Spinorama Preference Score | 5.26 | - |
| Spinorama Preference Score with Perfect Sub | 7.74 | - |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | Yes | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | Yes | No |
| Microphone Input | No | No |
| Guitar Input | No | No |
| Crossover Frequency | - | 1.6kHz (manufacturer specified) |
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: QSC K8.2 (measured by the manufacturer) and RCF ART 708-A MK4 (measured by the manufacturer), via spinorama.org.
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