Short answer: choose between the JBL PRX908 and RCF ART 708-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.
Why choose the JBL PRX908. High-quality vendor data shows a 4.95 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.
Why choose the RCF ART 708-A MK4. The 10.4kg 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. Its 126dB peak claim is modest for a main speaker, so pairing with a subwoofer matters more here than with the larger PRX modules. The low-quality vendor measurement is truncated and cannot produce a reliable preference score.
Buy the JBL PRX908 when its stated coverage, output, processing, and installation format fit the job better.
Buy the RCF ART 708-A MK4 when its stated strengths better suit the venue and the rest of the system.
If sound quality matters at all to you, skip the RCF ART 708-A MK4. It ranks near the bottom of the 15 8-inch two-way powered pa speakers, so look higher up the list instead.
Specifications Side By Side
| JBL PRX908 | RCF ART 708-A MK4 | |
|---|---|---|
| Price | $799.00 | $525.00 |
| Ranked | #5 of 15 in 8-Inch Two-Way Powered PA Speakers | #14 of 15 in 8-Inch Two-Way Powered PA Speakers |
| Configuration | Active 2-way bass-reflex PA speaker | Active 2-way bass-reflex PA speaker |
| Drivers | 8" woofer, 1.5" compression driver | 8" woofer, 1" compression driver |
| Frequency Response | 55Hz - 20kHz (-10dB, manufacturer specified) | 60Hz - 20kHz (manufacturer specified) |
| Dimensions | 18.9"H x 12.3"W x 11.2"D (479 x 312 x 285 mm) | 18.9"H x 11.5"W x 10.9"D (480 x 291 x 276 mm) |
| 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 | 2000W peak / 1000W RMS | 800W peak / 400W RMS (600W LF + 200W HF peak, manufacturer specified) |
| Crossover Frequency | 1930Hz | 1.6kHz (manufacturer specified) |
| Cabinet Material | Polypropylene/talc composite | Polypropylene composite |
| Rigging | 6 x M10 suspension points; dual 36mm pole sockets | Two M10 fly points; 35mm pole socket |
| Coverage | 105° x 60° | 100° x 70° |
| Maximum SPL | 126dB peak (manufacturer specified) | 127dB peak (manufacturer specified) |
| Bass Extension (-3dB) | 63Hz (measured, vendor Spinorama data) | 75Hz (measured, vendor Spinorama data) |
| DSP | Yes, 12-band parametric EQ and dbx DriveRack | Yes, FiRPHASE, EQ, limiting and protection |
| Bluetooth | Yes, control via JBL Pro Connect app | No |
| Weight | 30.2 lbs / 13.7 kg | 22.9 lbs / 10.4 kg |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- L-Acoustics 108P vs Yamaha DXR8mkII
- QSC K8.2 vs Yamaha DXR8mkII
- Yamaha DXR8mkII vs RCF ART 712-A MK4
- RCF ART 708-A MK4 vs QSC K10.2
- JBL PRX908 vs RCF ART 708-A MK5
Prices on this page were last checked September 7, 2026 at 7:47 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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The Two Speakers In Full
JBL PRX908: $799.00 Amazon B&H Photo Video Guitar Center eBay
Pros: High-quality vendor data shows a 4.95 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.
Cons: Its 126dB peak claim is modest for a main speaker, so pairing with a subwoofer matters more here than with the larger PRX modules.
Full JBL PRX908 review and specifications →
| Amplifier Power | 2000W peak / 1000W RMS |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, vendor Spinorama data) |
| Bluetooth | Yes, control via JBL Pro Connect app |
| Cabinet Material | Polypropylene/talc composite |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 105° x 60° |
| Crossover Frequency | 1930Hz |
| DSP | Yes, 12-band parametric EQ and dbx DriveRack |
| Dimensions | 18.9"H x 12.3"W x 11.2"D (479 x 312 x 285 mm) |
| Drivers | 8" woofer, 1.5" compression driver |
| Frequency Response | 55Hz - 20kHz (-10dB, manufacturer specified) |
| Inputs | 2 x XLR/TRS combo, 3.5mm aux; 2 x XLR thru and XLR mix outputs |
| Maximum SPL | 126dB peak (manufacturer specified) |
| Rigging | 6 x M10 suspension points; dual 36mm pole sockets |
| Weight | 30.2 lbs / 13.7 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
RCF ART 708-A MK4: $525.00 B&H Photo Video Guitar Center eBay
Pros: The 10.4kg cabinet combines 127dB claimed peak output, a broad horn and RCF’s FiRPHASE processing in a straightforward, affordable package for an 8-inch box.
Cons: The low-quality vendor measurement is truncated and cannot produce a reliable preference score. This discontinued MK4 offers little reason to choose it over the newer ART 708-A MK5 unless the used price is substantially lower.
Full RCF ART 708-A MK4 review and specifications →
| Amplifier Power | 800W peak / 400W RMS (600W LF + 200W HF peak, manufacturer specified) |
|---|---|
| Bass Extension (-3dB) | 75Hz (measured, vendor Spinorama data) |
| Bluetooth | No |
| Cabinet Material | Polypropylene composite |
| Configuration | Active 2-way bass-reflex PA speaker |
| Coverage | 100° x 70° |
| Crossover Frequency | 1.6kHz (manufacturer specified) |
| DSP | Yes, FiRPHASE, EQ, limiting and protection |
| Dimensions | 18.9"H x 11.5"W x 10.9"D (480 x 291 x 276 mm) |
| Drivers | 8" woofer, 1" compression driver |
| Frequency Response | 60Hz - 20kHz (manufacturer specified) |
| Inputs | XLR/jack combo input; XLR output |
| Maximum SPL | 127dB peak (manufacturer specified) |
| Rigging | Two M10 fly points; 35mm pole socket |
| Weight | 22.9 lbs / 10.4 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- RCF ART 708-A MK4 vs Martin Audio CDD8
- RCF ART 708-A MK4 vs Audiofocus VENU 8a
- RCF ART 708-A MK4 vs RCF ART 708-A MK5
- RCF ART 708-A MK4 vs RCF KX 08-A
- RCF ART 708-A MK4 vs Yamaha DXR8mkII
- RCF ART 708-A MK4 vs QSC K8.2
- RCF ART 708-A MK4 vs QSC K10.2
- RCF ART 708-A MK4 vs Yamaha DZR15
- See all 10 comparisons