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B&C 8NSM64-8 8" Professional Neodymium Sealed Back Midrange 8 Ohm

B&C SpeakersPart # 294-5946
Model: 8NSM64-8
The convenient 8NSM64-8 8" sealed back midrange from B&C Speakers is perfect for use in any high output 3-way speaker design. With 100 dB sensitivity and 250 watt RMS power handling, this midrange has enough output capability to keep up with the most powerful drivers. The cast aluminum housing provides ample heat dissipation and isolated the driver for easy installation.

Key Features

  • 2-1/2" voice coil and fiberglass former to handle up to 250 watts RMS
  • High output midrange response with extremely low distortion
  • Non-resonant cast aluminum rear chamber provides isolation and heat dissipation
  • Waterproof treated paper cone for use in damp and wet locations
Your Price: $340.14
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MSRP: $566.90
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Overview

B&C 8NSM64-8 8" Professional Neodymium Sealed Back Midrange 8 Ohm

B&C Speakers' 8NSM64-8 8" sealed back midrange produces high efficiency midrange response from 245 to 2,000 Hz with remarkably low distortion. With a non-resonant cast aluminum rear chamber, the 8NSM64-8 can be easily installed into enclosures without the need for additional isolation. The motor system is powered by a high energy neodymium ring magnet for low weight and high efficiency. Treated with a waterproof coating, the naturally damped paper cone keeps unwanted resonances under control for smooth and accurate response, even when used in harsh conditions. B&C's NSM series dedicated narrow-bandwidth midranges offer the lowest distortion at given output of any midrange available. The 8NSM64-8 is the ideal midrange for use in high output 3-way direct radiation or front loaded horn speaker systems.

Product Details

BrandB&C Speakers
Model8NSM64-8
Part Number294-5946
UPC848864063409
Unit of MeasureEach
Weight11.55

Product Specifications

Nominal Diameter8"
Bolt Circle Diameter8.74
Power Handling (RMS)500 Watts
Impedance
Frequency Response245 to 2,000Hz
Sensitivity100dB 2.83V/1m
Voice Coil Diameter2.5"

Thiele-Small Parameters

Resonant Frequency (Fs)245Hz
DC Resistance (Re)5.7Ω
Voice Coil Inductance (Le)0.6mH
Mechanical Q (Qms)9.3
Electromagnetic Q (Qes)0.35
Total Q (Qts)0.34
Compliance Equivalent Volume (Vas)0.05ft³
BL Product (BL)22T·m
Diaphragm Mass Inc. Airload (Mms)19g
Maximum Linear Excursion (Xmax)2mm
Surface Area of Cone (Sd)220cm²

Materials of Construction

Cone MaterialTreated Paper
Surround MaterialCloth
Voice Coil Wire MaterialAluminum
Voice Coil FormerFiberglass
Basket / Frame MaterialCast Aluminum
Magnet MaterialNeodymium

Mounting Information

Overall Outside Diameter9.41"
Baffle Cutout Diameter7.87"
Depth4.53"
# Mounting Holes6

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