6NSM51
For simplified cabinet assembly and efficient thermal transfer to the air, our NSM series of sealed back midranges feature a cast aluminum sealed chassis, high strength neodymium motor, and large internal volume for good low frequency performance. Large voice coils provide power handling, while careful selection of suspension and cone components results in exceptional sensitivity. These dedicated narrow-bandwidth midranges offer the lowest distortion at given output of any midrange available.
Features
500 W continuous program power capacity
51 mm (2 in) aluminium voice coil
300 - 6000 Hz response
100 dB sensitivity
Ideal for Direct Radiation and Horn Loaded Midrange application
Aluminium demodulating ring for Extremely Low Distortion
Specifications
Nominal Diameter
170 mm (6.5 in)
Nominal Impedance
8 Ω
Minimum Impedance
6.6 Ω
Nominal Power Handling
250 W
Continuous Power Handling
500 W
Sensitivity
100 dB
Frequency Range
300 Hz - 6000 Hz
Voice Coil Diameter
51 mm (2 in)
Winding Material
Aluminium
Former Material
Glass Fibre
Winding Depth
8.5 mm (0.33 in)
Magnetic Gap Depth
6 mm (0.24 in)
Flux Density
1.6 T
Woofer Cone Treatment
WP Waterproof Front Side
Parameters
Fs
280 Hz
Re
5.4 Ω
Qes
0.68
Qms
5.4
Qts
0.6
Vas
0.7 dm³ (0.02 ft³)
Sd
143 cm² (22.17 sq²)
η0
2.2 %
Xmax
2.8 mm
Xvar
3 mm
Mms
13.5 g
Bl
13.9 Tm
Le
0.15 mH
EBP
412 Hz
Design
Surround Shape
Triple Roll
Cone Shape
Radial
Magnet Material
Neodymium Ring
Spider
Single
Pole Design
T-Pole
Woofer Cone Treatment
WP Waterproof Front Side
Mounting and Shipping Info
Overall Diameter
187 mm (7.36 in)
Bolt Circle Diameter
172 mm (6.77 in)
Baffle Cutout Diameter
151 mm (5.94 in)
Depth
113 mm (4.45 in)
Flange and Gasket Thickness
11 mm (0.43 in)
Air Volume Occupied by Driver
2 dm³ (0.07 ft³)
Net Weight
2.25 kg (4.96 lb)
Shipping Units
1 pcs
Shipping Weight
2.48 kg (5.46 lb)
Shipping Box
210x180x150 mm (8.27x7.09x5.91 in)
Service Kit
lf Recone Kit
RCK06NSM518
Cone
Gasket
Centering Shims