Dayton Audio ND90-4 3-1/2″ Aluminum Cone Full Range Neo Driver 4Ohm
Overview:
Dayton Audio’s ND90-4 compact aluminum cone driver demonstrates the latest advances in high-excursion design processes. When teamed up with the matching ND series passive radiators this driver can produce incredible full sound from compact enclosures.
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Key Features:
- Full-range 80 Hz to 15 kHz performance
- Rubber-edged aluminum alloy cone
- Large excursion capability—4 mm Xmax, 20 mm peak
- Self-shielded Neo-Balanced motor structure
- 3/4″ 4-layer underhung voice coil with polyimide former
- 20 watts RMS power handling
Product Details:
| Brand | Dayton Audio | 
| Model | ND90-4 | 
| Unit of Measure | Each | 
| Weight | 0.55 | 
Product Specification:
| Nominal Diameter | 3-1/2″ | 
| Power Handling (RMS) | 20Â Watts | 
| Power Handling (MAX) | Â Â Â Â Â Â Â Â Â Â Â Â Â Â 40Â Watts | 
| Sensitivity | 85.7dB 2.83V/1m | 
| Voice Coil Diameter | 0.75″ | 
| Frequency Response | Â Â Â Â Â Â Â Â Â Â 80 to 15,000Hz | 
| Impedance |                4Ω | 
Thiele Small Parameters:
| Resonant Frequency (Fs) | 90.2Hz | 
| DC Resistance (Re) | 3.6Ω | 
| Voice Coil Inductance (Le) | 0.62mH | 
| Mechanical Q (Qms) | 5.1 | 
| Electromagnetic Q (Qes) | 0.72 | 
| Total Q (Qts) | 0.63 | 
| Compliance Equivalent Volume (Vas) | 0.037ft³ | 
| Mechanical Compliance of Suspension (Cms) | 0.73mm/N | 
| BL Product (BL) | 3.47T·m | 
| Diaphragm Mass Inc. Airload (Mms) | 4.3g | 
| Maximum Linear Excursion (Xmax) | 4mm | 
| Surface Area of Cone (Sd) |              31.2cm² | 
Materials of Construction:
| Cone Material | Aluminum | 
| Surround Material | Rubber | 
| Voice Coil Wire Material | Copper | 
| Voice Coil Former | Kapton® / Polyimide | 
| Basket / Frame Material | Steel | 
| Magnet Material | Neodymium | 
Mounting Information:
| Overall Outside Diameter | 4.07″ | 
| Â Baffle Cutout Diameter | 3.01″ | 
| Depth | 2.39″ | 
| # Mounting Holes | 4 | 







 
				


 
				
 
				
 
				
 
				
 
				
 
				
 
				
 
				
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