Eighteen Sound 8CX401F-8+8

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Eighteen Sound 8CX401-8 — 8" Coaxial speaker

The Eighteen Sound 8CX401-8 is a professional 8" coaxial speaker with 8 ohm impedance. It combines a woofer and a compression driver in the same unit for compact design and accurate sound reproduction. With a 51 mm voice coil, neodymium magnet and integrated horn loading, it offers high sensitivity, low distortion and long life even under continuous load. Ideal for monitors, installations and PA systems where the coaxial solution offers advantages in the form of a point source and simple cabinet construction.

Technical data

  • Size: 8" (outer diameter approx. 210 mm, recess diameter ≈187 mm, depth ≈110 mm)
  • Impedance: 8 ohms
  • Sensitivity: ≈94 dB (1 W / 1 m)
  • Rated power (LF): 200 W AES
  • Program power (LF): 400 W
  • Rated power (HF): 40 W AES
  • Program power (HF): 80 W
  • Frequency range: 70–18000 Hz
  • Voice coil LF: 51 mm (2") copper
  • Voice coil HF: 36 mm (1.4") aluminium
  • Magnet: Neodymium
  • Weight: ≈3.0 kg

Thiele/Small parameters (LF)

Fs: 70 Hz
Qty: 0.32
Qes: 0.34
Qms: 6.5
Re: 5.3 Ω
Weight: ≈28 g
Sd: ≈220 cm²
Xmax: ±4 mm
Baffle cutout: ≈187 mm
Bolt circle diameter: ≈200 mm
Total depth: ≈110 mm

Recommended use

  • Coaxial solution for monitors and installations
  • Cabinet: Small bass reflex or closed boxes, 5–15 dm³
  • Crossover guidelines: HP 70–80 Hz, LP up to 1.5–2 kHz (LF), HF up to 18 kHz
  • Designed for high reliability and compact design

Item no.

  • Manufacturer: Eighteen Sound
  • Model: 8CX401-8
  • Category: Coaxial speaker / LF+HF driver