Short answer: choose between the QSC K8.2 and RCF ART 715-A MK4 by matching the speaker to the deployment rather than treating their ranking positions as a universal verdict. Coverage, cabinet format, bass extension, output capability, DSP, and service support all matter in a PA system. The RCF ART 715-A MK4 is discontinued; its replacement is the RCF ART 715-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 715-A MK4. The 43.2 lbs (19.6 kg) cabinet combines 130dB claimed peak output, a broad horn and RCF’s FiRPHASE processing in a straightforward, affordable package for a 15-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 installation format fit the job better.
Buy the RCF ART 715-A MK4 when its stated strengths better suit the venue and the rest of the system.
Still deciding? The full PA & Live Sound rankings cover every ranked option.
A superb 8 inch PA speaker, with excellent sound and flexible built in processing in a compact box.
A discontinued, affordable powered 15 inch PA speaker with a broad horn and simple controls for straightforward gigs.
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Specifications Side By Side
| QSC K8.2 | RCF ART 715-A MK4 | |
|---|---|---|
| Price | $749.99 | $500.00 Discontinued |
| Ranked | #1 of 47 in 8-Inch PA Speakers | #62 of 76 in 15-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 | 15” woofer, 1” compression driver |
| Frequency Response | 59Hz - 20kHz (-6dB, manufacturer specified) | 45Hz - 20kHz (manufacturer specified) |
| Dimensions | 17.7”H x 11”W x 10.6”D (449 x 280 x 269 mm) | 27.9”H x 17.2”W x 15.3”D (708 x 437 x 389 mm) |
| Coverage | 105° conical | 100° x 60° |
| Maximum SPL | 128dB peak (manufacturer specified) | 130dB 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) | 1,400W peak / 700W RMS (1,000W LF + 400W 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) | 65Hz (measured, vendor Spinorama data) |
| DSP | Yes | Yes, FiRPHASE, EQ, limiting and protection |
| Bluetooth | No | No |
| Weight | 26.9 lbs (12.2 kg) | 43.2 lbs (19.6 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 715-A MK4 (measured by the manufacturer), via spinorama.org.
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