Quick Overview

The Dayton Audio SS8-PR 8" Signature Series Passive Radiator is the perfect low-frequency companion to the SS8-22 subwoofer, offering deep bass extension from compact enclosures without the need for long, noisy ports. Designed to match the Signature Series in both looks and performance, the SS8-PR features the same rigid cast aluminum frame, anodized aluminum cone, and rubber surround as its powered counterpart. With Dayton Audio’s innovative Sandwich Mass Structure (SMS) system, fine-tuning your enclosure is simple and precise, making the SS8-PR an excellent choice for high-performance home audio, home theater, and car audio systems.

Product Highlights

Signature Series styling with cast aluminum frame, aluminum cone, and rubber surround — visually identical to the SS8-22 driver
Passive radiator design eliminates port noise and allows deep bass in compact enclosures
Sandwich Mass Structure (SMS) keeps added mass between spider and surround for stability and symmetry
Easy tuning via threaded bolt, wing nut, and nylock nut assembly
Includes five 46 g weights for customizable mass loading and flexible tuning options
Perfect companion for the Dayton Audio SS8-22 subwoofer in compact systems

Product Manuals / Spec Sheets / Downloads

Dayton Audio SS8-PR Specification Sheet

Buying Options

Dayton Audio SS8-PR 8" Signature Series Passive Radiator

The Dayton Audio SS8-PR 8" Signature Series Passive Radiator is designed to deliver deep, controlled bass extension in compact enclosures, making it the perfect partner for the SS8-22 subwoofer. By replacing a traditional port with a passive radiator, you can achieve powerful low-frequency performance without the turbulence, noise, or oversized cabinet requirements of vented designs.

Signature Series Styling and Construction

To maintain a seamless look with the Signature Series subwoofers, the SS8-PR uses the same heavy-duty cast aluminum frame, thick anodized aluminum cone, and high-roll rubber surround. From the front, it looks identical to the SS8-22 driver, ensuring a clean, unified appearance in your system. The rigid cone and surround are designed to withstand the long excursion needed to match today’s high-output subwoofers while keeping distortion low.

Innovative Sandwich Mass Structure

All of the additional mass for the SS8-PR is supported in Dayton Audio’s Sandwich Mass Structure (SMS). This design locates all added tuning mass between the spider and the surround, where it moves in perfect symmetry with the diaphragm. A threaded bolt with both a wing nut and a nylock nut makes it easy to adjust, secure, and fine-tune the added mass. Each SS8-PR includes five 46 g weights, giving you precise control over tuning frequency and performance.

Deep Bass Extension in a Compact Form

Compact, powerful, and easy to integrate, the Dayton Audio SS8-PR is the perfect way to get the most out of your SS8-22 subwoofer system. With its matching aesthetics, durable construction, and SMS tuning system, it combines performance, flexibility, and style in one package — delivering the deep, distortion-free bass that today’s music and home theater systems demand.

Package Contents

(1) Passive Radiator
(5) 46 gram disk weights
(1) Nylon locking nut (for final assembly)
(1) Wing Nut

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

Note: Passive raidator specs listed below measured with no additional mass included.

Product Details

Speaker Series	Signature Series
Model Number	SS8-PR
Color	Black
Unit of Measure	Each
UPC	848791011115
Warranty - Parts	5 Years
Warranty - Labor	5 Years
Product Shipping Weight (lbs.)	7 lbs.
Speaker Type	Passive Radiator
Nominal Diameter	8"
Cone / Diaphragm Material	Aluminum
Surround Material	Rubber
Basket/Frame Material	Cast Aluminum
Overall Outside Diameter	214 mm
Overall Depth	74 mm
Baffle Cutout Diameter	184.7 mm
# Mounting Holes	8
Bolt Circle Diameter	200 mm