Short answer: choose between the QSC K8.2 and JBL PRX908 for the deployment, not from the automatic ranking alone. Their driver format, power requirements, coverage, bass reach, output capability, and control features determine which is the more practical PA for a particular room or system.
The case for 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.
The case for the JBL PRX908. High-quality vendor data shows a 5.69 ideal-subwoofer preference score with 58Hz measured extension, backed by JBL’s extensive service network. A 12-band parametric EQ with dbx DriveRack feedback suppression and BLE app control carry over the PRX900 series’ engineering into an 8-inch cabinet.
Important trade-offs. 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. Its 126dB peak claim is modest for a main speaker, so pairing with a subwoofer matters more here than with the larger PRX modules.
Buy the QSC K8.2 when its stated format, coverage, and system features fit the job better.
Buy the JBL PRX908 when its stated output, control, and deployment strengths better match the system.
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 compact powered 8 inch PA speaker with well balanced sound, Bluetooth app control and feedback suppression for gigs and monitors.
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Specifications Side By Side
| QSC K8.2 | JBL PRX908 | |
|---|---|---|
| Price | $749.99 | $699.00 |
| Ranked | #1 of 47 in 8-Inch PA Speakers | #6 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, 1.5” compression driver |
| Frequency Response | 59Hz - 20kHz (-6dB, manufacturer specified) | 55Hz - 20kHz (-10dB, manufacturer specified) |
| Dimensions | 17.7”H x 11”W x 10.6”D (449 x 280 x 269 mm) | 18.9”H x 12.3”W x 11.2”D (479 x 312 x 285 mm) |
| Coverage | 105° conical | 105° x 60° |
| Maximum SPL | 128dB peak (manufacturer specified) | 126dB peak (manufacturer specified) |
| Inputs | 2 x XLR/TRS combo, 3.5mm aux; 2 x XLR thru and XLR mix outputs | 2 x XLR/TRS combo, 3.5mm aux; 2 x XLR thru and XLR mix outputs |
| Amplifier Power | 2025W peak (1800W LF + 225W HF) | 2000W peak / 1000W RMS |
| Cabinet Material | Impact-resistant ABS | Polypropylene/talc composite |
| Rigging | 2 x M10 inserts and pull-back point; 35mm pole mount | 6 x M10 suspension points; dual 36mm pole sockets |
| Bass Extension (-3dB) | 58Hz (measured, vendor Spinorama data) | 63Hz (measured, vendor Spinorama data) |
| DSP | Yes | Yes, 12-band parametric EQ and dbx DriveRack |
| Bluetooth | No | Yes, control via JBL Pro Connect app |
| Weight | 26.9 lbs (12.2 kg) | 30.2 lbs (13.7 kg) |
| Spinorama Preference Score | 5.26 | 3.10 |
| Spinorama Preference Score with Perfect Sub | 7.74 | 5.69 |
| 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 | Yes |
| Microphone Input | No | No |
| Guitar Input | No | No |
| Crossover Frequency | - | 1930Hz |
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 JBL PRX908 (measured by the manufacturer), via spinorama.org.
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