Short answer: the L-Acoustics X8. It ranks #7 of 47 8-inch pa speakers by sound quality, rated 4.0/5, at $2,000; the RCF KX 08-A ranks #8, rated 3.9/5, and costs $2,308.50, so there is little reason to consider the other one.
The L-Acoustics X8 is the deeper-bass option. A compact passive 8 inch coaxial speaker with highly accurate sound and wide, even coverage, great as a stage monitor or fill. Its bass reaches about 71Hz before falling 3dB, against 82.5Hz for the RCF KX 08-A. Watch for: It is a passive cabinet that needs an L-Acoustics amplified controller.
The case for the RCF KX 08-A: A powerful 8 inch point source PA speaker with remote network control and a rotatable horn in a manageable cabinet. The tradeoff: The local measurement is truncated and cannot produce a preference score, and pricing/retail availability are not yet well established for this model.
Buy the L-Acoustics X8. It is rated higher for sound quality than the RCF KX 08-A and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full PA & Live Sound rankings.
Prices on this page were last checked November 7, 2026 at 7:34 PM 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
| L-Acoustics X8 | RCF KX 08-A | |
|---|---|---|
| Price | $2,000 Passive | $2,308.50 |
| Ranked | #7 of 47 in 8-Inch PA Speakers | #8 of 47 in 8-Inch PA Speakers |
| Passive | Yes | No |
| Configuration | Passive 2-way coaxial PA speaker | Active 2-way bass-reflex point-source PA speaker |
| Drivers | 8” low-frequency driver, 1.5” compression driver (coaxial) | 8” woofer, 1.75” voice-coil neodymium compression driver |
| Frequency Response | 60Hz - 20kHz (manufacturer specified) | 65Hz - 20kHz (manufacturer specified) |
| Amplifier Power | Passive speaker; requires external amplification (L-Acoustics amplified controller) | 2000W peak (1400W LF + 600W HF) |
| Maximum SPL | 129dB (manufacturer specified) | 128dB peak (manufacturer specified) |
| Coverage | 100° axisymmetric | 90° x 70°, rotatable |
| DSP | No (passive; processing comes from the amplified controller) | Yes, RDNet remote management |
| Rigging | 35° monitoring angle | M10 inserts; 35mm pole mount |
| Weight | 26.5 lbs (12 kg) | 24.3 lbs (11 kg) |
| Bass Extension (-3dB) | 71Hz (measured, vendor Spinorama data) | 82.5Hz (measured, vendor Spinorama data) |
| Bluetooth | No | No |
| Spinorama Preference Score | 4.29 | - |
| Spinorama Preference Score with Perfect Sub | 7.09 | - |
| XLR Input | No | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| 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 |
| Dimensions | - | 17.7”H x 10.2”W x 11.2”D (450 x 260 x 285.4 mm) |
| Inputs | - | XLR and EtherCON RDNet input/link |
| Crossover Frequency | - | 1400Hz |
| Cabinet Material | - | Baltic birch plywood |
| Network Control | - | RDNet |
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