Eighteen Sound 15MB700-8

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Eighteen Sound 15MB700-8 — 15" Ferrite Midbass

The Eighteen Sound 15MB700-8 is a professional 15" ferrite midbass for PA and touring. It combines high sensitivity, low distortion and robust construction. With a 75 mm voice coil, powerful ferrite motor and optimized ventilation, it delivers stable performance even under prolonged load. Moisture-resistant cone and reinforced materials provide long service life in demanding environments.

Technical data

  • Size: 15" (387 mm outer diameter, 355 mm recessed diameter, 160 mm depth)
  • Impedance: 8 ohms
  • Sensitivity: 98 dB (1 W / 1 m)
  • Rated power: 500 W AES, max 1000 W continuous
  • Frequency range: 45–4000 Hz
  • Voice coil: 75 mm ISV
  • Magnet: Ferrite
  • Weight: ~8.5 kg

Thiele/Small parameters

Fs: 45 Hz
Qts: 0.29
Qes: 0.31
Qms: 7.2
Re: 5.3 Ω
Weight: 115 g
Baffle cutout: 355 mm
Bolt circle diameter: 370 mm
Total depth: ≈160 mm

Recommended use

  • Midbass in two-way or three-way speaker systems
  • Cabinet: Bass reflex 80–150 dm³
  • Crossover guidelines: HP 45–60 Hz, LP up to 3.5 kHz
  • Designed for high SPL and powerful mid-bass reproduction

Item no.

  • Manufacturer: Eighteen Sound
  • Model: 15MB700-8
  • Category: Cone driver / Midbass