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NEW Dayton Audio SS8-PR 8" Signature Series Passive Radiator

Dayton AudioPart # 295-729
Model: SS8-PR
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.

Key Features

  • 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
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See all items in Passive Radiators
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MSRP: $77.99
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Overview

Dayton Audio SS8-PR 8" Signature Series Passive Radiator

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

Shop All Signature Series Passive Radiators

SS10-PR

Nominal Diameter: 10"
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SS12-PR

Nominal Diameter: 12"
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SS15-PR

Nominal Diameter: 15"
Passive Radiator
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    SS18-PR

    Nominal Diameter: 18"
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    Note: Passive raidator specs listed below measured with no additional mass included.

    Product Details

    BrandDayton Audio
    ModelSS8-PR
    Part Number295-729
    UPC848791011115
    Unit of MeasureEach
    Weight3.2

    Product Specifications

    Nominal Diameter8"
    Bolt Circle Diameter7.875

    Thiele-Small Parameters

    Resonant Frequency (Fs)37.4Hz
    Mechanical Q (Qms)2.55
    Compliance Equivalent Volume (Vas)0.42ft³
    Mechanical Compliance of Suspension (Cms)0.212mm/N
    Diaphragm Mass Inc. Airload (Mms)85g
    Maximum Linear Excursion (Xmax)25mm
    Surface Area of Cone (Sd)198.6cm²

    Materials of Construction

    Cone MaterialAluminum
    Surround MaterialRubber
    Basket / Frame MaterialCast Aluminum

    Mounting Information

    Overall Outside Diameter8.43"
    Baffle Cutout Diameter7.25"
    Depth2.9"
    # Mounting Holes8

    Specifications

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