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

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

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 Dayton Audio ND91-4 Data Files AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description Dayton Audios 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 ND90s 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 motors 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. OPTIMUM CABINET SIZE * 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 List Price $37.99 Color Black Unit of Measure Each UPC 844632090448 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.7 Speaker Type Full-Range Nominal Diameter 3.50" Power Handling (RMS) 30 watts Power Handling (max) 60 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 85.6 dB @ 2.83V/1m Frequency Response 65 - 17 000 Hz Voice Coil Diameter 25 mm Magnet Weight -- 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) -- 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) 4.6mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Aluminum Cone Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material Aluminum Voice Coil Former Kapton® / Polyimide Basket/Frame Material Steel Magnet Material Ferrite Overall Outside Diameter 103.5 mm Overall Depth 63.4 mm Baffle Cutout Diameter 85 mm # Mounting Holes 4 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --