8" | 8NPM
Neodymium Mid-Woofer
Key features:
- Hi sensitivity
- Hi power handling
- Designed for applications where are sizable amounts of mid-frequencies required
Design notes:
The 8NPM is a high efficiency, (96dB 1watt / 1 meter) 8-inch mid-woofer with extended mid frequency response and high power handling capability. The 8NPM uses a lightweight half pressed paper cone along with a double roll fabric surround. Spider is made of Nomex material with optimized shape for well controlled pistonic motion. The used high quality components ensure long lasting performance even in high powered applications. The chosen material combination provides remarkable strength, high efficiency and sustained output under extreme conditions.
Power Handling
The voice coil featuring Kapton former material capable of withstanding peak temperatures in excess of 280C, well beyond the thermal requirements of modern audio systems. Former strength provides the ideal transfer of power between the voice coil and the cone assembly and assists in reducing distortion artifacts. By combining this material with state of the art adhesives and our winding voice coil technology, the 8NPM delivers incredibly high performance.
Specifications:
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General specs |
Nominal Diameter: |
8 in. |
Rated Impedance: |
8 Ohm |
Power handling |
AES Power: |
200 Watts |
Program Power: |
400 Watts |
Voice Coil |
Diameter: |
2 in. |
Winding wire: |
CCAW |
Former: |
kapton |
Winding height: |
15.4 mm |
-
T/S Parameters |
Resonant frequency: |
79 Hz |
Re: |
5.4 ohm |
Qes: |
0.31 |
Qms: |
3.85 |
Qts: |
0.29 |
Vas: |
107 liters |
Sd: |
881 cm2 |
Mms: |
23.9 grams |
Bl: |
14.2 |
Le: |
0.6 mH |
Sensitivity: |
96.06 dB |
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Design details |
Surround Material: |
Fabric |
Cone material: |
Paper |
Spider: |
Nomex |
Plate thickness: |
8 mm |
Peak to peak linear cone Displacement |
10.2 mm |
Overall diameter: |
209.5 mm |
Bolt circle diameter: |
197.5 mm |
Baffle cutout dia.: |
185 mm |
Number of mounting holes: |
8 |
Depth (flange to rear): |
87.3 mm |
Net weight: |
1.8 kg |
Ordering codes: |
8 ohm version: |
8NPMX8-157 |
Frequency response & lmpedance
2D drawing