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 Audio's Designer Series drives, with a black anodized aluminum cone and medium-roll rubber surround for clean excursion and long life. The possibilities with these passives are endless, from stand mount two-ways to portable battery powered speaker systems.

Specifications: • Fs: 26.8 Hz • Vas: 0.95 ft³ • Qms: 4.30 • Cms: 1.15 mm/N • Rms: 1.2 kg/s • Mms: 30.7 g • Sd: 128.7 sq. cm. • Xmax: 8 mm • Dimensions: Overall diameter: 6.91", Cutout diameter: 5.67", Depth: 1.85".

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