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.
- 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
Nominal diameter 460 mm. 18 in.
Rated impedance 8 ohms.
Minimum impedance 7.4 ohms.
Power capacity 400 w AES
Program power 800 w
Sensitivity 97 dB 2.83v @ 1m @ 2pi
Frequency range 30 - 3000 Hz
Recom. enclosure vol. 60 / 150 l 2.12 / 5.3 ft.3
Voice coil diameter 77 mm. 3 in.
Magnetic assembly weight 5 kg. 11 lb.
BL Factor 16.5 N / A
Moving mass 0.114 kg.
Voice coil length 18 mm.
Air gap height 7 mm.
X Damage (peak to peak) 30 mm.
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