The Peerless P830878 is a compact 3.5” passive radiator designed to enhance low-frequency performance in space-constrained enclosures. Featuring a coated paper cone, rubber surround, and a cosmetic steel frame, it complements Peerless SDS woofers both visually and acoustically. With a low resonance frequency of 29 Hz and precise mechanical compliance, it is ideal for extending bass response without the need for long ports.