8" | 81FIND
Ferrite Mid-Woofer
Key features:
- EXTENDED FREQUENCY RESPONSE
- Ideal for small and portable 2-way systems
- Affordable, yet very capable design for cost sensitive product
Design notes:
- The 81FIND is a high efficiency, (95 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: 8 Ohm Power handling AES Power: 200 Watts Program Power: 400 Watts Voice Coil Diameter: 2 in. Winding wire: CCAW Former: kapton Winding height: 12.5 mm T/S Parameters Resonant frequency: 80 Hz Re: 4.7 ohm Qes: 0.53 Qms: 8.35 Qts: 0.5 Vas: 11.3 liters Sd: 213.8 cm2 Mms: 22.6 grams Bl: 10.2 Le: 0.44 mH Sensitivity: 94.68 dB Design details Surround Material: Fabric Cone material: Paper Spider: Nomex Plate thickness: 8 mm Peak to peak linear cone Displacement 13.2 mm Overall diameter: 209 mm Bolt circle diameter: 197 mm Baffle cutout dia.: 180 mm Number of mounting holes: 8 Depth (flange to rear): 91.5 mm Net weight: 2.8 kg Ordering codes: 8 ohm version: 81FINDX8-290 Recone kits: Download: Spec download 2D drawing 3D model
Frequency response & lmpedance
2D drawing
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