Used for a project that never really took off the ground. Driver has less than a few hours of use and not even broken in. CONDITION: Excellent Cosmetic and FunctionalRetail price: $140.00More info can be found herehttps://www.parts-express.com/Dayton-Audio-UM8-22-8-Ultimax-DVC-Subwoofer-2-Ohms-Per-Coil-295-508?quantity=1 Product Highlights Thick, one-piece Nomex honeycomb covered cone with woven heavy-duty glass-fiberDual linear stiffness spiders limit distortion and rocking modesTall-boy rubber surround for extra-long linear excursion without reducing cone surface areaBlack anodized aluminum former and black pole improves heat dissipation300 watts RMS power handlingLarge vented pole piece and under-spider ventingDual 2 ohm, 2-layer copper voice coilsKey Specs: Nominal Diameter: 8Power Handling (RMS): 300WPower Handling (MAX): 600WImpedance: Dual Voice Coil, 2?+2?Frequency Response: 30-800HzSensitivity: 84.2dB 2.83V/1mVoice Coil Diameter: 2Maximum Linear Excursion: 16mm Will ship within the lower 48 states only. Buyer pays insured shipping fee based on location. Local pick up is available.

Dayton Audio ND105-4 4 Aluminum Cone Midbass Neo Driver 4 Ohm Product Details Package Dimensions: 4.41 x 4.33 x 3.07 inches Item Weight: 12.7 ounces Item model number: PS-SWF074 Is Discontinued By Manufacturer: No Manufacturer: Dayton Audio Brand: Dayton Audio Model Name: ND105-4 Speaker Type: Surround Sound Special Feature: Radio Subwoofer Diameter: 4 Inches Extended-range 60 Hz to 10 kHz performance Rubber-edged aluminum alloy cone Large excursion capability-4 mm Xmax, 20 mm peak Self-shielded Neo-Balanced motor structure 1 4-layer underhung voice coil with polyimide former Quick Overview Dayton Audios compact aluminum cone drivers demonstrate the latest advances in high-excursion design processes. Product Highlights Extended-range 60 Hz to 10 kHz performance Rubber-edged aluminum alloy cone Large excursion capability 4 mm Xmax, 20 mm peak Self-shielded Neo-Balanced motor structure 1 4-layer underhung voice coil with polyimide former 30 watts RMS power handling Product Manuals / Spec Sheets / Downloads Dayton Audio ND105-4 Specification Sheet Dayton Audio ND105-4 Data Files AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis 1 Product Description Dayton Audios compact aluminum cone drivers demonstrate the latest advances in high-excursion design processes. An efficient, low-distortion Neo-Balanced motor is combined with a rigid yet lightweight aluminum diaphragm, yielding impressive high-impact audio reproduction. Perfect for single point-source applications, or combined in multiples and line arrays. OPTIMUM CABINET SIZE * Sealed Volume 0.1 ft.³ Sealed F3 84 Hz Vented Volume 0.3 ft.³ Vented F3 41 Hz * Enclosure volume/F3s based on BassBox optimum calculations Product Details Speaker Series ND Series Model Number ND105-4 List Price $34.99 Color Black Unit of Measure Each UPC71 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.8 Speaker Type Midrange Nominal Diameter 4 Power Handling (RMS) 30 watts Power Handling (max) 60 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 86.8 dB @ 2.83V/1m Frequency Response 60 - 10 000 Hz Voice Coil Diameter 25 mm Magnet Weight -- DC Resistance (Re) 3.7 ohms Voice Coil Inductance (Le) 0.76 mH @ 1 kHz Resonant Frequency (Fs) 78.7 Hz Mechanical Q (Qms) 7.42 Electromagnetic Q (Qes) 0.66 Total Q (Qts) 0.61 Diaphragm Mass Inc. Airload (Mms) 7.4g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.55 mm/N Surface Area Of Cone (Sd) 51.5 cm² Volume of Displacement (Vd) 20.6 cm³ BL Product (BL) 4.52 Tm Compliance Equivalent Volume (Vas) 1.97 liters Maximum Linear Excursion (Xmax) 4.0 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Black Anodized Aluminum Cone Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material Copper Voice Coil Former Kapton® / Polyimide Basket/Frame Material Steel Magnet Material Neodymium Overall Outside Diameter 105 mm Overall Depth 67 mm Baffle Cutout Diameter 93 mm # Mounting Holes 4 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --