8" | 8FHW
Ferrite Mid-Woofer
Key features:
- MID-WOOFER DESIGNED FOR OUTDOOR OR INDOOR APPLICATIONS
- UV STABILIZED POLYPROPYLENE CONE AND RUBBER SURROUND
- COMPONENTS ARE TREATED TO SURVIVE HARSH OUTDOOR ENVIRONMENTS
Design notes:
This 81FIND model is a version of 81FIND-290. It is a high efficiency, (96 dB 1watt / 1 meter) 8-inch woofer with linear frequency response characteristics, good power handling capability while generating low harmonic distortion artifacts. The 81FIND uses a lightweight glass-fiber loaded cone assembly along with a high excursion M-roll surround. This combination provides a lightweight, yet strong, piston.Magnetic CircuitFerrite based magnetic circuit, capable of delivering the good level of performance, providing a consistent, high integrity magnetic flux gap, low distortion characteristic and high-efficiency cooling system. The metal parts are extensively coated to provide the maximum weather protection. This driver has been chosen by many audio engineers for smaller sized, or portable audio products. It has proven its capability over and over again all around the world, many times in challenging applications or environments. 81FIND is proven design that delivers good balance between performance and cost.
Specifications:
-
General specs |
Nominal Diameter: |
8 in. |
Rated Impedance: |
4 Ohm |
Power handling |
AES Power: |
100 Watts |
Program Power: |
200 Watts |
Voice Coil |
Diameter: |
1.2 in. |
Winding wire: |
Copper |
Former: |
Aluminum |
Winding height: |
15.3 mm |
-
T/S Parameters |
Resonant frequency: |
36 Hz |
Re: |
3.3 ohm |
Qes: |
0.38 |
Qms: |
4.53 |
Qts: |
0.35 |
Vas: |
34.3 liters |
Sd: |
213.8 cm2 |
Mms: |
36.59 grams |
Bl: |
8.6 |
Le: |
0.89 mH |
Sensitivity: |
89.12 dB |
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Design details |
Surround Material: |
Rubber |
Cone material: |
Polypropylene |
Spider: |
Nomex |
Plate thickness: |
8 mm |
Peak to peak linear cone Displacement |
8.4 mm |
Overall diameter: |
209.5 mm |
Bolt circle diameter: |
197 mm |
Baffle cutout dia.: |
184.5 mm |
Number of mounting holes: |
8 |
Depth (flange to rear): |
86.5 mm |
Net weight: |
1.5 kg |
Ordering codes: |
4 ohm version: |
8FHWX4-382 |
8 ohm version: |
n/a |
16 ohm version: |
n/a |
Recone kits: |
4 ohm version: |
RC8FHWX4-382 |
8 ohm version: |
n/a |
16 ohm version: |
n/a |
Frequency response & lmpedance
2D drawing