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2" | 21NFR
Neodymium Full-range
Neodymium Full-range
Neodymium Full-range Neodymium Full-range
Key features:
  • Compact, full-range design
  • Highly efficient magnetic structure
  • High power handling capability
Design notes:
Introducing the 21NFR - a small driver with a mighty punch! This gem was developed to deliver a full range of frequencies, from rich bass to crystal-clear highs, making it the perfect choice for portable products, bookshelf speakers, and array applications in columns.What sets the 21NFR apart is its full-range behavior, eliminating the need for additional tweeters while still achieving excellent sound quality. Our extensive experience in designing highly efficient transducers shines through in this driver, offering top-notch performance without breaking the bank.The u-cup style magnetic system is optimized to deliver consistent magnetic flux to the voice coil across the entire operational range, ensuring a powerful and consistent audio experience. Plus, with a lightweight yet robust cone attached to our specially crafted rubber blend surround, the 21NFR is designed to handle low frequencies with ease while also excelling as a high-frequency device.Get ready to experience the power and versatility of the 21NFR - where small size meets massive performance.
Specifications:
  • General specs
    Nominal Diameter: 2 in.
    Rated Impedance: 16 Ohm
    Power handling
    AES Power: 10 Watts
    Program Power: 20 Watts
    Voice Coil
    Diameter: 0.8 in.
    Winding wire: CCAW
    Former: kapton
    Winding height: 6.4 mm
  • T/S Parameters
    Resonant frequency: 157 Hz
    Re: 10.2 ohm
    Qes: 0.82
    Qms: 3.8
    Qts: 0.68
    Vas: 0.25 liters
    Sd: 16.62 cm2
    Mms: 1.59 grams
    Bl: 4.4
    Le: 0.1 mH
    Sensitivity: 84.7 dB
  • Design details
    Surround Material: Rubber
    Cone material: Paper
    Spider: Nomex
    Plate thickness: 4 mm
    Peak to peak linear cone Displacement 8.2 mm
    Overall diameter: 57.3 mm
    Bolt circle diameter: 45.45 mm
    Baffle cutout dia.: 50.5 mm
    Number of mounting holes: 4
    Depth (flange to rear): 34.5 mm
    Net weight: 0.12 kg
  • Ordering codes:
    16 ohm version: 21NFR-X16 ohm-393D
    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
2" | 21NFR
Key features:
  • Compact, full-range design
  • Highly efficient magnetic structure
  • High power handling capability
Design notes:
Introducing the 21NFR - a small driver with a mighty punch! This gem was developed to deliver a full range of frequencies, from rich bass to crystal-clear highs, making it the perfect choice for portable products, bookshelf speakers, and array applications in columns.What sets the 21NFR apart is its full-range behavior, eliminating the need for additional tweeters while still achieving excellent sound quality. Our extensive experience in designing highly efficient transducers shines through in this driver, offering top-notch performance without breaking the bank.The u-cup style magnetic system is optimized to deliver consistent magnetic flux to the voice coil across the entire operational range, ensuring a powerful and consistent audio experience. Plus, with a lightweight yet robust cone attached to our specially crafted rubber blend surround, the 21NFR is designed to handle low frequencies with ease while also excelling as a high-frequency device.Get ready to experience the power and versatility of the 21NFR - where small size meets massive performance.
Specifications:
General specs
Nominal Diameter: 2 in.
Rated Impedance: 16 Ohm
Power handling
AES Power: 10 Watts
Program Power: 20 Watts
Voice Coil
Diameter: 0.8 in.
Winding wire: CCAW
Former: kapton
Winding height: 6.4 mm
T/S Parameters
Resonant frequency: 157 Hz
Re: 10.2 ohm
Qes: 0.82
Qms: 3.8
Qts: 0.68
Vas: 0.25 liters
Sd: 16.62 cm2
Mms: 1.59 grams
Bl: 4.4
Le: 0.1 mH
Sensitivity: 84.7 dB
Design details
Surround Material: Rubber
Cone material: Paper
Spider: Nomex
Plate thickness: 4 mm
Peak to peak linear cone Displacement 8.2 mm
Overall diameter: 57.3 mm
Bolt circle diameter: 45.45 mm
Baffle cutout dia.: 50.5 mm
Number of mounting holes: 4
Depth (flange to rear): 34.5 mm
Net weight: 0.12 kg
Ordering codes:
16 ohm version: 21NFR-X16 ohm-393D
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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