Dayton Audio - ND91-4 - 3-1/2" Aluminum Cone Full-Range Driver 4 Ohm

Price: 2,084.00INR
Ex Tax: 2,084.00INR
Brand:  Dayton Audio
Product Code:  ND91-4
Availability:  In Stock
1 reviews  (1 reviews)   |   Write a review

Dayton Audio - ND91-4 - 3-1/2" Aluminum Cone Full-Range Driver 4 Ohm

Quick Overview:

The low distortion and high excursion capabilities of the Dayton Audio ND91-4 3-1/2" full-range driver make it an ideal candidate for miniature point-source monitors, surround speakers, and line arrays.

Product Highlights:

  • Low distortion, full-range 65 Hz to 17 kHz performance
  • Rubber-edged black anodized aluminum alloy cone
  • Large excursion capability — 4.6 mm Xmax, 25 mm peak
  • Self-shielded Neo-Balanced motor structure with copper alloy shorting ring
  • 1" 4-layer underhung voice coil with polyimide former
  • 30 watts RMS power handling
  • Great for line arrays and micro monitors

Product Manuals / Spec Sheets / Downloads:

Dayton Audio ND91-4 Specification Sheet

Dayton Audio ND91-4 Klippel Test Results

Product Description:

Dayton Audio's ND91 aluminum cone full-range drivers are the latest addition to the acclaimed ND Series high output/low distortion neodymium transducers. By increasing the original ND90's voice coil diameter from 3/4" to 1" and adding a copper alloy shorting ring, the ND91-4 features even lower distortion and delivers better bass impact and dynamic range—with peak Xmax up to 25 mm!
This high-BL version further exploits the low distortion characteristics of the Neo-Balanced motor's optimized magnetic field, making the ND91 drivers an excellent choice for full-range point-source speaker enclosures, as well as extremely accurate, high resolution line arrays.


Sealed Volume 0.01 ft.³
Sealed F3 132 Hz
Vented Volume 0.03 ft.³
Vented F3 73 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations

Product Details:

Speaker Series ND Series
Model Number ND91-4
Color Black
Unit of Measure Each
UPC 844632090448
Product Shipping Weight (lbs.) 0.7000
Speaker Type Full Range
Nominal Diameter 3.50"
Power Handling (RMS) 30 watts
Power Handling (max) 60 watts
Continuous Program Power No
Impedance 4 ohms
Sensitivity 85.6 dB @ 2.83V/1m
Frequency Response 65 - 17,000 Hz
Voice Coil Diameter 25 mm
Magnet Weight No
DC Resistance (Re) 4.3 ohms
Voice Coil Inductance (Le) 0.83 mH @ 1 kHz
Resonant Frequency (Fs) 74 Hz
Mechanical Q (Qms) 4.24
Electromagnetic Q (Qes) 0.45
Total Q (Qts) 0.41
Diaphragm Mass Inc. Airload (Mms) 4.8g
Moving Mass Of Diaphragm (Mmd) No
Mechanical Compliance of Suspension (Cms) 0.96 mm/N
Surface Area Of Cone (Sd) 30.4 cm²
Volume of Displacement (Vd) 12.2 cm³
BL Product (BL) 4.59 Tm
Compliance Equivalent Volume (Vas) 1.4 liters
Maximum Linear Excursion (Xmax) 4.6 mm
Driver's Mechanical Losses (Rms) No
Cone / Diaphragm Material Aluminum Cone
Cone / Dome Diameter No
Entry / Exit Diameter No
Mounting Type No
Surround Material Rubber
Voice Coil Wire Material Aluminum
Voice Coil Former Kapton® / Polyimide
Dual Voice Coil No
Basket/Frame Material Steel
Magnet Material Ferrite
Shielded No
Overall Outside Diameter 103.5 mm
Overall Depth 63.4 mm
Baffle Cutout Diameter 85 mm
# Mounting Holes 4
Mounting Hole Diameter No
Bolt Circle Diameter No
Product Weight No

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