B&C 8 NSM 64
B&C 8 NSM 64
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.
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Technical Specification
Technical Specification
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 |