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3" | 31NFR
Neodymium Full-Range
Neodymium Full-Range
Neodymium Full-Range Neodymium Full-Range
Key features:
  • EXTENDED FREQUENCY RESPONSE
  • Hard anodized Aluminum cone
  • Usage in hi-fi, columns, outdoor and portable products
Design notes:
The 31NFR is a high efficiency, (84dB 1watt / 1 meter) 3-inch full range speaker with very linear frequency response characteristics and high power handling capability. The 31NFR uses a lightweight anodized aluminum cone assembly along with a NBR single roll geometry surround. The combination provides high efficiency, extended high frequency response and sustained output under variety of conditions, while generating low harmonic distortion over the working range of this speaker. Magnetic circuit designREDCATT engineers have developed neodymium based magnetic circuit with small form factor, high integrity magnetic flux gap and low distortion characteristic. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability. Copper demodulation cup is assembled over the t-pole.
Specifications:
  • General specs
    Nominal Diameter: 3 in.
    Rated Impedance: 8 Ohm
    Power handling
    AES Power: 30 Watts
    Program Power: 60 Watts
    Voice Coil
    Diameter: 1 in.
    Winding wire: Aluminum
    Former: kapton
    Winding height: 7.4 mm
  • T/S Parameters
    Resonant frequency: 115 Hz
    Re: 6.3 ohm
    Qes: 0.94
    Qms: 15.1
    Qts: 0.88
    Vas: 0.85 liters
    Sd: 28.3 cm2
    Mms: 2.5 grams
    Bl: 3.5
    Le: 0.09 mH
    Sensitivity: 84.49 dB
  • Design details
    Surround Material: Rubber
    Cone material: Aluminum
    Spider: Nomex
    Plate thickness: 4 mm
    Peak to peak linear cone Displacement 5.8 mm
    Overall diameter: 78.7 mm
    Bolt circle diameter: 84 mm
    Baffle cutout dia.: 71.5 mm
    Number of mounting holes: 4
    Depth (flange to rear): 45.3 mm
    Net weight: 0.18 kg
  • Ordering codes:
    8 ohm version: 31NFRX8 ohm-229
    Recone kits:
    Download:
    Spec download
    2D drawing
    3D model
Frequency response & lmpedance
2D drawing
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REDCATT designs and manufactures world class loudspeakers. Additionally to the loudspeakers sold under REDCATT brand name, we also design and manufacture OEM / ODM loudspeakers.
Copyright © 2012-2022 REDCATT LTD 粤ICP备2021039803号-1
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redcatt

Neodymium Full-Range
Neodymium Full-Range
Neodymium Full-Range
Neodymium Full-Range Neodymium Full-Range
3" | 31NFR
Key features:
  • EXTENDED FREQUENCY RESPONSE
  • Hard anodized Aluminum cone
  • Usage in hi-fi, columns, outdoor and portable products
Design notes:
The 31NFR is a high efficiency, (84dB 1watt / 1 meter) 3-inch full range speaker with very linear frequency response characteristics and high power handling capability. The 31NFR uses a lightweight anodized aluminum cone assembly along with a NBR single roll geometry surround. The combination provides high efficiency, extended high frequency response and sustained output under variety of conditions, while generating low harmonic distortion over the working range of this speaker. Magnetic circuit designREDCATT engineers have developed neodymium based magnetic circuit with small form factor, high integrity magnetic flux gap and low distortion characteristic. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability. Copper demodulation cup is assembled over the t-pole.
Specifications:
General specs
Nominal Diameter: 3 in.
Rated Impedance: 8 Ohm
Power handling
AES Power: 30 Watts
Program Power: 60 Watts
Voice Coil
Diameter: 1 in.
Winding wire: Aluminum
Former: kapton
Winding height: 7.4 mm
T/S Parameters
Resonant frequency: 115 Hz
Re: 6.3 ohm
Qes: 0.94
Qms: 15.1
Qts: 0.88
Vas: 0.85 liters
Sd: 28.3 cm2
Mms: 2.5 grams
Bl: 3.5
Le: 0.09 mH
Sensitivity: 84.49 dB
Design details
Surround Material: Rubber
Cone material: Aluminum
Spider: Nomex
Plate thickness: 4 mm
Peak to peak linear cone Displacement 5.8 mm
Overall diameter: 78.7 mm
Bolt circle diameter: 84 mm
Baffle cutout dia.: 71.5 mm
Number of mounting holes: 4
Depth (flange to rear): 45.3 mm
Net weight: 0.18 kg
Ordering codes:
8 ohm version: 31NFRX8 ohm-229
Recone kits:
Download:
Spec download
2D drawing
3D model
Frequency response & lmpedance
2D drawing

Phone: (+86) 769 8318 1898   Email: info@redcatt.net

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