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18 Sound 8NMB750 16ohm 8” 350 watt Neodymium speaker


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18 Sound 8NMB750 350watt 16ohm 8 " High Performance Mid Bass Speaker

93.6 dB SPL 1W-1m average sensitivity
700 W program power handling
75 mm (3 in) Interleaved sandwich voice coil
External Neodymium magnet assembly
Single Demodulating Ring (SDR) for lower distortion and maximum sound clarity
Copper ring for reduced distortion and increased output
Weather protected cone and coated plates
Suitable for high performance line array and compact two way systems

18 Sound’s 8NMB750 mid-bass neodymium transducer is a state-of-the-art 8-inch midbass driver that combines excellent linearity with high power handling capabilities (700 W) and reduced power compression.

The external neodymium magnet assembly assures high flux concentration and excellent heat exchange.

The 75mm (3 in) inside outside aluminum voice coil employs Interleaved Sandwich Voice coil (ISV) technology.

A sophisticated distortion reduction system has been implemented using a demodulating ring for flux modulation cancellation related to voice coil excursion, together with a copper ring for the reduction of intermodulation distortion. Both systems are linearizing the inductance in relation to the excursion as well as the current variation.

The cone is treated against extremely aggressive environment conditions.

The compact size makes the 8NMB750 an ideal choice for high performance line arrays and compact two-way systems.

Designed & manufatured in Italy and provided exclusively by Lean Business, this Eighteen Sound speaker comes complete wth 2 years warranty.

See specification tab for technical details or Click HERE for full details, response curves and Thiele & Small parameters. (opens in new window)

Model: 18 Sound 8NMB750

note: Price includes VAT

Nominal Diameter 210 mm (8 in)
Rated Impedance
16 Ω
AES Power
350 W
Program Power
700 W
Peak Power
1400 W
93.6 dB
Frequency Range
56 ÷ 7000 Hz
Power Compression
@-10dB 1.2 dB
Power Compression
@-3dB 1.7 dB
Power Compression
@Full Power 2.3 dB
Max Recomm. Frequency
3000 Hz
Recomm. Enclosure Volume
8 ÷ 16 lt. (0.28÷ 0.57 cu.ft)
Minimum Impedance
14 Ω at 25°
Max Peak To Peak Excursion
35 mm (1.38 in)
Voice Coil Diameter
75 mm (2.95 in)
Voice Coil winding material
Suspension Triple roll,
Straight ribbed composite, Water, flame, UV repellent

Thiele Small Parameters

Fs 91 Hz
10,2 Ω
0,023 sq.m (35.65 sq.in)
7,3 lt. (0.23 cu.ft)
30 gr. (0.07 lb)
21,5 Tm Linear
Mathematical Xmax
±6,3 mm (±0.25 in)
(1kHz) 0,30 mH
Half space efficiency

Mounting information

Overall diameter 225 mm (8.86 in)
N. of mounting holes and bolt
Mounting holes diameter
6.2 mm (0.24 in)
Bolt circle diameter
210 mm (8,27 in)
Front mount baffle cutout
ø 186 mm (7.32 in)
Rear mount baffle cutout
ø 184 mm (7.24 in)
Total depth
105 mm (4.13 in)
Flange and gasket thickness
11 mm (0,43 in)
Net weight
4 kg (8,82 lb)

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