Beyma SM-118/N

-5 %

RRP 229,00 €

incl. 19% VAT plus shipping
Goods have to be ordered
-5 %

The design concept of this low frequency transducer arises from the need of achieve a more resistant loudspeaker that matches the more and more power given by ultimate amplification systems. In order to accomplish that, almost every component of the speaker has been reconsidered. The SM-118/N incorporates a 3" voice coil made with high quality materials: copper round wire with high temperature bonding strength and apical former. Moreover, it features a powerful magnet system with rear air ventilation. All these facts result in a 18" driver with extended and smooth low-mid frequency response, reduced harmonic distortion, good efficiency and excellent power handling (400 w AES). The SM-118/N is specially recommended for woofer applications.

Key features:
  • High power handling (400 w AES)
  • 3" (77 mm.) copper voice coil with apical former
  • Optimum winding length for increased linear excursion
  • Extended response in the medium frequency range
  • Designed for high power woofer applications

Short data

Usage as Woofer
Power Handling 400 Watt
Impedance 8 Ohm
Frequency from 30 Hz
Max. Frequency 3 kHz
Sound pressure 97 dB


Overall dimensions 460 mm
Baffle cutout 415 mm
Depth (Total) 187 mm
Front material Aluminium diecast
Frame Material Aluminium diecast
Membrane Type Cone
Membrane Surround Textile
Membrane Material Paper
Voice coil Ø 77 mm
Voice coil height 18 mm
Voice coil material Aluminium
Air gap height 7 mm
Magnet Ø 180 mm
Magnet-weight 5000 g


Resonance fs fs: 36 Hz
Mechanical Q Qms: 6.83
Electrical Q Qes: 0.53
Total Q Qts: 0.49
Equivalent Air-Volumen Vas: 300 Liter
DC-Resistance Re: 6.4 Ohm
Coil Inductance Le: 1.1 mH
Mech. Compliance Cms: 0.161 mm/N
Moving Mass Mms: 123 g
mech. Resistance Rms: 4.1 kg/s-¹
Max. Excursion +/- Xmax: 5.5 mm
BL Product Bl: 18.3 N/A
Membrane Area Sd: 1150 cm²
Sound pressure dB: 97 SPL
Efficiency Nref: 2.5 %

Frequency, Harmonic Distortion


Technical Dimensions

PDF-Product information

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