B&C 8 NSM 64

 

General
Product type Cone driver
Brand B&C Speakers
Reference 8NSM64
Product code ALT008NSM648
Information
Nominal impedance 8 ohm
Dimensional category 8.5 inch, 9.5 inch
Frequency coverage type Midrange, High midrange
Manufacturer sensitivity 100 dB
Calculated sensitivity 99.84 dB
Nominal power handling 250 W
Bandwidth 245÷2000 Hz
Fundamental parameters
Sd 220 cm²
Mms 19 gr
Le 0.6 mH
Re 5.7 ohm
BL 22 T.m
Small signal parameters
Fs 245 Hz
Qes 0.35
Qms 9.3
Qts 0.34
Vas 1.5 L
Datas
Xmax ±2 mm
Calculated Xmax ±4.8333 mm
EBP 700 Hz
Zmin 8.2 ohm
Fs / Qts 721 Hz
Vas * Qts² 0.18 L
Efficiency 4.50%
Calculated efficiency 0.0606
Weight ~4.9 kg
Closed speaker Yes
Dimensions
Voice coil diameter 2.5 inch
Winding depth 13 mm
Gap height 10 mm
External dimensions 210 | 239 mm
Baffle cutout diameter 200 mm
Front thickness 16 mm
Depth after front 99 mm
Shape & Materials
Front chape Non cylindrical
Magnet type Neodymium
Basket masterial Aluminium
Winding material Aluminium
Voice coil former Glass fiber