The RCF KX 45-A is rated 4.2/5 for sound quality, #5 of 76 15-Inch PA Speakers. See all PA & Live Sound rankings for every top pick.

RCF KX 45-A · Editor's rating 4.2/5, ranked #5 of 76 15-Inch PA Speakers

Check price at B&H Photo Video ($4,618.50) →

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

#5 RCF KX 45-A: $4,618.50 B&H Photo Video $4,618.50 eBay

Same family: the RCF KX 08-A (smaller model, rated 3.9/5), the RCF KX 10-A (smaller model, rated 4/5) and the RCF KX 32-A (smaller model, rated 4.3/5).

Pros: A flagship powered 15 inch PA speaker with huge amplifier power, very loud peaks, remote control and rotatable coverage. RCF’s flagship 15-inch point source pairs a 3200W amplifier with a 3-inch titanium-dome compression driver, RDNet remote control and a 137dB claimed peak, the highest maximum-output claim in this ranking. Rotatable 100° x 70° coverage suits both main and monitor use.

Cons: The local measurement is truncated and cannot produce a preference score. At 28.4kg it is one of the heaviest boxes here, and pricing/retail availability are not yet established.

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Network Control

Released	2025 (1 year ago)
AES Input	No
Amplifier Power	3200W peak (2000W LF + 1200W HF)
Aux Input	No
Bass Extension (-3dB)	54.5Hz (measured, manufacturer spinorama data)
Bluetooth	No
Cabinet Material	Baltic birch plywood
Coaxial Input	No
Configuration	Active 2-way bass-reflex point-source PA speaker
Coverage	100° x 70°, rotatable
Crossover Frequency	750Hz
DSP	Yes, FiRPHASE, Bass Motion Control, presets and RDNet
Dimensions	27.8”H x 16.5”W x 16.9”D (705 x 419.6 x 430 mm)
Drivers	15” neodymium woofer, 1.4” exit/3” dome compression driver
Frequency Response	50Hz - 20kHz (manufacturer specified)
Guitar Input	No
HDMI Input	No
Inputs	XLR audio input/link and EtherCON RDNet
Maximum SPL	137dB peak (manufacturer specified)
Microphone Input	No
Network Control	RDNet
Optical Input	No
Passive	No
RCA Input	No
Rigging	Quick-lock rigging; 6 x M10 inserts; 35mm pole mount
TRS Input	No
USB Input	No
Weight	62.6 lbs (28.4 kg)
XLR Input	Yes

Check current price at B&H Photo Video ($4,618.50) →Search eBay for RCF KX 45-A →

Links
- RCF KX 45-A Product Information
Reviews, Comparisons and Sound Samples
- Spinorama Measurements

Frequency Response

How the RCF KX 45-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

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

EQ for a Neutral Response

No EQ preset: the best simple EQ we can fit to these measurements improves the predicted preference score by less than 0.2. The listening window is already close to flat, and what holds the score back, such as narrow ripple in the response or uneven output off-axis, is not something EQ can fix without making it worse elsewhere.

More RCF speakers →

RCF KX 45-A Review: Rated 4.2/5

#5 RCF KX 45-A: $4,618.50 B&H Photo Video $4,618.50 eBay

Frequency Response

EQ for a Neutral Response

Head-to-Head Comparisons