Check the listing for details. Dayton Audio RSS210-PR 8" Aluminum Cone Passive Radiator. Condition: New. Listed at 86.93 USD. Dayton Audio RSS210-PR 8" Reference Series Aluminum Cone Passive Radiator We are proud to offer our customers the complete line of Dayton Audio Reference Series passive radiators. These high quality, well-engineered passive radiators are carefully constructed using the same rigid anodized aluminum cone and cast frame as Dayton Audio's world renowned Reference Series subwoofers, making them visually identical and a perfect match to the very popular line of drivers.Mass Appeal Each passive radiator employs the unique SMS™ (Sandwiched Mass Structure) design which keeps the majority of the mass centered between the surround and spider providing greater linearity by minimizing angular torque. These passives are also tunable using the included weights with the bolt-on mass adjustment assembly, making them easily integrated into virtually any subwoofer design.Cast aluminum frame holds everything together In order to support its extreme excursion, the RSS210-PR uses a rugged cast aluminum frame. The minimalistic design of the frame both eliminates unwanted flex and provides ample room for the rear of the cone. Plenty of room behind the spider makes sure that you can push the limits of excursion without bottoming out.Packaged Contents(1) Passive Radiator(4) 75 gram disk weights(1) Nylon locking nut (for final assembly) 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=Xmax ∗ Sd We've Got Your Back We stand behind our products and our warranty is a demonstration of our commitment to quality and reliability.Learn MoreShop All Reference Aluminum Passive Radiators Capable of exceptional performance in everything from small subwoofers to 2-way designs, this series is incredibly versatile for whatever project you can come up with.  RSS265-PRNominal Diameter: 10" Passive Radiator Shop NowRSS315-PRNominal Diameter: 12" Passive Radiator Shop NowRSS390-PRNominal Diameter: 15" Passive RadiatorShop NowRSS460-PRNominal Diameter: 18" Passive Radiator Shop Now Don't Trust Us...Trust Our Customers "I have a 24 x 24 living room with 18 foot ceiling this sub with 2 passive radiators slams drops low and loud I made my box with 2 layers of mdf it’s 7.5 cf and running a 1000 watt Dayton amp took a week to break in but wow it really compresses the air in here"- Eric E. Learn MoreRequest QuoteÂ