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 Allows tuning small enclosures lower than using conventional ports Rear mounted screw allows easy mass adjustment for custom tuning Perfect match for Dayton Audios paper cone Designer Series drivers Cosmetic frame edge looks great even when surface mounted Product Manuals / Spec Sheets / Downloads Dayton Audio DS135-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 bookshelf two-ways to portable battery powered speaker systems. Specifications: • Fs: 27.7 Hz • Vas: 12.2 liters • Qms: 3.93 • Cms: 1.52 mm/N • Rms: 1 kg/s • Mms: 21.8g • Sd: 75.4 sq. cm. • Xmax: 8 mm • Dimensions: Overall diameter: 134.87 mm, Cutout diameter: 111.51 mm, Depth: 38.1 mm. Note: Adding mass to the passive radiator will decrease Fs and increase Qms. Tip: As a general rule, the passive radiator(s) should have at least double the displacement of air (Vd) as the active woofer(s)/subwoofer(s) in the system. To calculate Vd: Sd x Xmax = Vd Product Details Speaker Series Designer Series Model Number DS135-PR List Price $14.99 Color Black Unit of Measure Each UPC 848791005015 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.5 Speaker Type Passive Radiator Nominal Diameter 5" Power Handling (max) -- Continuous Program Power -- Sensitivity -- Frequency Response -- Voice Coil Diameter -- Magnet Weight -- DC Resistance (Re) -- Voice Coil Inductance (Le) -- Resonant Frequency (Fs) 27.7 Hz Mechanical Q (Qms) 3.93 Electromagnetic Q (Qes) -- Total Q (Qts) -- Diaphragm Mass Inc. Airload (Mms) 21.8g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 1.52 mm/N Surface Area Of Cone (Sd) 75.4 cm² Volume of Displacement (Vd) 60.3 cm³ BL Product (BL) -- Compliance Equivalent Volume (Vas) 12.2 liters Maximum Linear Excursion (Xmax) 8 mm Drivers Mechanical Losses (Rms) 1 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 134.87 mm Overall Depth 38.1 mm Baffle Cutout Diameter 111.51 mm # Mounting Holes 4 Mounting Hole Diameter -- Bolt Circle Diameter 125.98 mm Product Weight --