Quick Overview The Dayton Audio Designer Series passive radiators are excellent general-purpose passives suitable for replacement or for new construction. Built to be a perfect match for the Designer Series drivers, these passive radiators feature the same steel frame, rubber surround, and treated paper cone making them visually identical. Product Highlights Perfect match for Dayton Audios paper cone Designer Series drivers Allows tuning small enclosures lower than using conventional ports Rear mounted screw allows easy mass adjustment for custom tuning Cosmetic frame edge looks great even when surface mounted Product Manuals / Spec Sheets / Downloads Dayton Audio DS90-PR Specification Sheet AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description The Dayton Audio Designer Series passive radiators are excellent general-purpose passives suitable for replacement or for new construction. A built-in mass disc offers a good starting point for most designs, and a convenient M5 threaded hole (screw included) allows different types of weights to be added if desired. Cosmetically and mechanically, these passives match Dayton Audios Designer Series drives, with a poly coated paper cone and medium-roll rubber surround for clean excursion and long life. The possibilities with these passives are endless, from floor standing two-ways to portable battery powered speaker systems. Specifications: • Fs: 42.4 Hz • Vas: 3.5 liters • Qms: 5.9 • Cms: 2.55 mm/N • Rms: 0.3 kg/s • Mms: 5.5g • Sd: 31.2 sq. cm. • Xmax: 4 mm • Dimensions: Overall diameter: 92.22 mm, Cutout diameter: 70.1 mm, Depth: 21.84 mm. Product Details Speaker Series Designer Series Model Number DS90-PR List Price $12.99 Color Black Unit of Measure Each UPC 848791004995 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.2 Speaker Type Passive Radiator Nominal Diameter 3" Power Handling (max) -- Continuous Program Power -- Sensitivity -- Frequency Response -- Voice Coil Diameter -- Magnet Weight -- DC Resistance (Re) -- Voice Coil Inductance (Le) -- Resonant Frequency (Fs) 42.4 Hz Mechanical Q (Qms) 5.9 Electromagnetic Q (Qes) -- Total Q (Qts) -- Diaphragm Mass Inc. Airload (Mms) 5.5g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 2.55 mm/N Surface Area Of Cone (Sd) 31.2 cm² Volume of Displacement (Vd) 12.5 cm³ BL Product (BL) -- Compliance Equivalent Volume (Vas) 3.5 liters Maximum Linear Excursion (Xmax) 4 mm Drivers Mechanical Losses (Rms) 0.3 kg/s Cone / Diaphragm Material Paper Cone Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material -- Voice Coil Former -- Basket/Frame Material Steel Magnet Material -- Overall Outside Diameter 92.2 mm Overall Depth 21.84 mm Baffle Cutout Diameter 70.1 mm # Mounting Holes 4 Mounting Hole Diameter -- Bolt Circle Diameter 83.06 mm Product Weight --