LF
Fullrange
2"
21NFR
Code: 21NFRX16-393D
Full-Range/2inch/Neo/Paper/10W/16ohm
Key Features
- Compact, full-range design
- Highly efficient magnetic structure
- High power handling capability
Quick Specs
Impedance
16 Ω
Program Power
20 W
Sensitivity
84.70 dB
Fs
157.00 Hz
Magnet
Neodymium
Voice Coil
20.3 mm
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.
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"
Rated Impedance
16 Ohm
Magnet
Neodymium
Basket Material
Steel
Power Handling
AES Power
10 W
Continuous Power
20 W
Peak Power
40 W
Voice Coil
Diameter
20.3 mm
Winding Wire
CCAW
Former
kapton
Winding Height
6.4 mm
T/S Parameters
Resonant Frequency (Fs)
157.00 Hz
Re
10.20 \u2126
Qes
0.820
Qms
3.80
Qts
0.680
Vas
0.25 liters
Sd
16.62 cm\u00B2
Mms
1.59 grams
Rms
0.41
Cms
0.6500
Bl
4.40 T\u00B7m
Le
0.100 mH
Sensitivity
84.70 dB
Design Details
Surround Material
NBR
Cone/Dome Material
Paper CF
Spider
Nomex
T-Plate
4 mm
Xmax (peak)
1.2 mm
Xmech
5.2 mm
Overall Diameter
57.30 mm
Bolt Circle Diameter
45.45 mm
Baffle Cutout Dia.
50.50 mm
Mounting Holes
4
Depth (flange to rear)
34.50 mm
Net Weight
0.12 kg
Ordering Codes
Product Code
21NFRX16-393D
Downloads
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (sealed): - 0.44 liters (Qtc 0.85): compact, punchy character; system resonance approx. 197 Hz - 0.75 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 181 Hz - 0.05 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 385 Hz
Frequently Asked Questions
- - Compact, full-range design
- - Highly efficient magnetic structure
- - High power handling capability
Recommended enclosure alignments (sealed): - 0.44 liters (Qtc 0.85): compact, punchy character; system resonance approx. 197 Hz - 0.75 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 181 Hz - 0.05 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 385 Hz
TV sets, soundbars, vertical column speaker arrays, small portable speakers, near-field consumer and commercial audio - 16ohm ve
AES Power: 10 W,
Continuous: 20 W,
Peak: 40 W.
Sensitivity: 84.70 dB (1W/1m).
