RCF KX 45-A vs RCF NX 945-A

Short answer: choose between the RCF KX 45-A and RCF NX 945-A 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 RCF KX 45-A. 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.

The case for the RCF NX 945-A. The top NX-series 15-inch box pairs a plywood cabinet with a 135dB claimed peak, the highest in the NX range, and a wide 100° x 70° pattern. RCF’s FiRPHASE and Bass Motion Control processing carry over from the smaller NX models.

Important trade-offs. 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. The measurement is truncated and does not produce a preference score, so its tonal position relies on published engineering rather than a confirmed result. At 27.3kg it is heavier than the ART 945-A alternative.

Buy the RCF KX 45-A when its stated format, coverage, and system features fit the job better.

Buy the RCF NX 945-A when its stated output, control, and deployment strengths better match the system.

Specifications Side By Side

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Other pairings from the same speaker class worth checking:

• KV2 Audio EX15 vs JBL PRX915
• KV2 Audio EX15 vs Yamaha DZR15
• RCF ART 945-A vs Vue Audiotechnik H-15
• RCF ART 945-A vs RCF KX 45-A
• RCF KX 45-A vs HK Audio LINEAR 7 115 FA

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

RCF KX 45-A: $4,620.00 B&H Photo Video Guitar Center eBay

Pros: 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.

Full RCF KX 45-A review and specifications →

Amplifier Power	3200W peak (2000W LF + 1200W HF)
Bluetooth	No
Cabinet Material	Baltic birch plywood
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)
Inputs	XLR audio input/link and EtherCON RDNet
Maximum SPL	137dB peak (manufacturer specified)
Network Control	RDNet
Rigging	Quick-lock rigging; 6 x M10 inserts; 35mm pole mount
Weight	62.6 lbs / 28.4 kg

• Links
  • RCF KX 45-A Product Information
• Reviews, Comparisons and Sound Samples
  • Spinorama Measurements
• Head-to-Head Comparisons
  • RCF KX 45-A vs Vue Audiotechnik H-15
  • RCF KX 45-A vs HK Audio LINEAR 7 115 FA
  • RCF KX 45-A vs RCF ART 945-A
  • RCF KX 45-A vs KV2 Audio EX15

RCF NX 945-A: $2,299.00 Amazon B&H Photo Video Guitar Center eBay

Pros: The top NX-series 15-inch box pairs a plywood cabinet with a 135dB claimed peak, the highest in the NX range, and a wide 100° x 70° pattern. RCF’s FiRPHASE and Bass Motion Control processing carry over from the smaller NX models.

Cons: The measurement is truncated and does not produce a preference score, so its tonal position relies on published engineering rather than a confirmed result. At 27.3kg it is heavier than the ART 945-A alternative.

Full RCF NX 945-A review and specifications →

Amplifier Power	2100W peak (1400W LF + 700W HF)
Bass Extension (-3dB)	65Hz (measured, vendor Spinorama data)
Bluetooth	No
Cabinet Material	Plywood
Configuration	Active 2-way bass-reflex PA speaker
Coverage	100° x 70°
Crossover Frequency	650Hz
DSP	Yes, FiRPHASE and Bass Motion Control
Dimensions	27.8"H x 16.5"W x 17.8"D (705 x 420 x 451 mm)
Drivers	15" woofer, compression driver
Frequency Response	45Hz - 20kHz (manufacturer specified)
Inputs	XLR/TRS combo input and XLR output
Maximum SPL	135dB peak (manufacturer specified)
Rigging	M10 and quick-lock rigging; 35mm pole mount
Weight	60.2 lbs / 27.3 kg

• Links
  • RCF NX 945-A Product Information
• Reviews, Comparisons and Sound Samples
  • Spinorama Measurements
• Head-to-Head Comparisons
  • RCF NX 945-A vs HK Audio LINEAR 7 115 FA
  • RCF NX 945-A vs KV2 Audio EX15
  • RCF NX 945-A vs Vue Audiotechnik H-15