RCF KX 08-A Review: Rated 3.9/5

Last updated: October 21, 2026

The RCF KX 08-A is rated 3.9/5 for sound quality, #8 of 47 8-Inch PA Speakers. See all PA & Live Sound rankings for every top pick.

Prices on this page were last checked October 24, 2026 at 4:42 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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Brand: RCF

#8 RCF KX 08-A: $2,308.50 B&H Photo Video $2,308.50 eBay

Same family: the RCF KX 10-A (larger model, rated 4/5), the RCF KX 32-A (larger model, rated 4.3/5) and the RCF KX 45-A (larger model, rated 4.2/5).

Pros: A powerful 8 inch point source PA speaker with remote network control and a rotatable horn in a manageable cabinet. The entry point into RCF’s flagship KX point-source range, with a 2000W amplifier, a PKX-dome neodymium compression driver, RDNet remote control and a rotatable 90° x 70° horn in a manageable 12.5kg cabinet. Measured bass extension of 82.5Hz (-3dB).

Cons: The local measurement is truncated and cannot produce a preference score, and pricing/retail availability are not yet well established for this model.

Released2025 (1 year ago)
AES InputNo
Amplifier Power2000W peak (1400W LF + 600W HF)
Aux InputNo
Bass Extension (-3dB)82.5Hz (measured, vendor Spinorama data)
BluetoothNo
Cabinet MaterialBaltic birch plywood
Coaxial InputNo
ConfigurationActive 2-way bass-reflex point-source PA speaker
Coverage90° x 70°, rotatable
Crossover Frequency1400Hz
DSPYes, RDNet remote management
Dimensions17.7”H x 10.2”W x 11.2”D (450 x 260 x 285.4 mm)
Drivers8” woofer, 1.75” voice-coil neodymium compression driver
Frequency Response65Hz - 20kHz (manufacturer specified)
Guitar InputNo
HDMI InputNo
InputsXLR and EtherCON RDNet input/link
Maximum SPL128dB peak (manufacturer specified)
Microphone InputNo
Network ControlRDNet
Optical InputNo
PassiveNo
RCA InputNo
RiggingM10 inserts; 35mm pole mount
TRS InputNo
USB InputNo
Weight24.3 lbs (11 kg)
XLR InputYes

Frequency Response

How the RCF KX 08-A measures across the audible range. A flatter listening window (the sound arriving straight at you) is more neutral: peaks sound forward or harsh, dips sound recessed. The estimated in-room response adds what a typical room does, and there a gentle, even tilt down toward the treble is ideal. Both curves are shifted so their 300 Hz to 3 kHz average sits at 0 dB.

Listening windowEstimated in-room response
Measured frequency response of the RCF KX 08-A-24-18-12-60+6dB20501002005001k2k5k10k20k

Measurement data: spinorama.org, measured by the manufacturer.

EQ for a Neutral Response

Flattens the measured listening window from the RCF KX 08-A's own bass extension up to 16 kHz. Set a preamp of -2.1 dB, then add these filters to any parametric equalizer in the signal path: the speaker's app or DSP if it has parametric EQ, a miniDSP, Equalizer APO or Wavelet. Boosts are kept to 3 dB, and EQ cannot fix how evenly the speaker spreads sound off-axis, which is why some speakers gain more than others. Calculated by Speaker Ranking from the spinorama measurements above.

FilterFrequencyGainQ
Peak116 Hz-4.3 dB0.50
Peak325 Hz-0.8 dB1.54
Peak1,190 Hz+1.0 dB2.03
Peak3,163 Hz+2.1 dB1.11
Peak9,260 Hz-1.6 dB1.41

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